class LossFasterRCNN(Model):
def forward(self, feed_dict):
prediction_dict = {}
# base model
base_feat = self.feature_extractor.first_stage_feature(
feed_dict['img'])
feed_dict.update({'base_feat': base_feat})
# batch_size = base_feat.shape[0]
# rpn model
prediction_dict.update(self.rpn_model.forward(feed_dict))
# proposals = prediction_dict['proposals_batch']
# shape(N,num_proposals,5)
# pre subsample for reduce consume of memory
if self.training:
self.pre_subsample(prediction_dict, feed_dict)
rois_batch = prediction_dict['rois_batch']
# note here base_feat (N,C,H,W),rois_batch (N,num_proposals,5)
pooled_feat = self.rcnn_pooling(base_feat, rois_batch.view(-1, 5))
# shape(N,C,1,1)
pooled_feat = self.feature_extractor.second_stage_feature(pooled_feat)
# semantic map
rcnn_cls_scores_map = self.rcnn_cls_pred(pooled_feat)
rcnn_cls_scores = rcnn_cls_scores_map.mean(3).mean(2)
saliency_map = F.softmax(rcnn_cls_scores_map, dim=1)
rcnn_cls_probs = F.softmax(rcnn_cls_scores, dim=1)
# rcnn_cls_probs = rcnn_cls_probs_map.mean(3).mean(2)
# shape(N,C)
rcnn_bbox_feat = pooled_feat * saliency_map[:, 1:, :, :]
# rcnn_bbox_feat = torch.cat([rcnn_bbox_feat, pooled_feat], dim=1)
rcnn_bbox_feat = rcnn_bbox_feat.mean(3).mean(2)
# if self.use_score:
# pooled_feat =
rcnn_bbox_preds = self.rcnn_bbox_pred(rcnn_bbox_feat)
prediction_dict['rcnn_cls_probs'] = rcnn_cls_probs
prediction_dict['rcnn_bbox_preds'] = rcnn_bbox_preds
prediction_dict['rcnn_cls_scores'] = rcnn_cls_scores
# used for track
proposals_order = prediction_dict['proposals_order']
prediction_dict['second_rpn_anchors'] = prediction_dict['anchors'][0][
proposals_order]
return prediction_dict
def init_weights(self):
# submodule init weights
self.feature_extractor.init_weights()
self.rpn_model.init_weights()
Filler.normal_init(self.rcnn_cls_pred, 0, 0.01, self.truncated)
Filler.normal_init(self.rcnn_bbox_pred, 0, 0.001, self.truncated)
def init_modules(self):
self.feature_extractor = ResNetFeatureExtractor(
self.feature_extractor_config)
self.rpn_model = LossRPNModel(self.rpn_config)
if self.pooling_mode == 'align':
self.rcnn_pooling = RoIAlignAvg(self.pooling_size,
self.pooling_size, 1.0 / 16.0)
elif self.pooling_mode == 'ps':
self.rcnn_pooling = PSRoIPool(7, 7, 1.0 / 16, 7, self.n_classes)
elif self.pooling_mode == 'psalign':
raise NotImplementedError('have not implemented yet!')
elif self.pooling_mode == 'deformable_psalign':
raise NotImplementedError('have not implemented yet!')
# self.rcnn_cls_pred = nn.Linear(2048, self.n_classes)
self.rcnn_cls_pred = nn.Conv2d(2048, self.n_classes, 3, 1, 1)
if self.class_agnostic:
self.rcnn_bbox_pred = nn.Linear(2048, 4)
# self.rcnn_bbox_pred = nn.Conv2d(2048,4,3,1,1)
else:
self.rcnn_bbox_pred = nn.Linear(2048, 4 * self.n_classes)
# loss module
if self.use_focal_loss:
self.rcnn_cls_loss = FocalLoss(2)
else:
self.rcnn_cls_loss = functools.partial(F.cross_entropy,
reduce=False)
self.rcnn_bbox_loss = nn.modules.SmoothL1Loss(reduce=False)
# cluster loss for bbox and cls(feat)
self.cluster_loss = ClusterLoss()
def init_param(self, model_config):
classes = model_config['classes']
self.classes = classes
self.n_classes = len(classes)
self.class_agnostic = model_config['class_agnostic']
self.pooling_size = model_config['pooling_size']
self.pooling_mode = model_config['pooling_mode']
self.crop_resize_with_max_pool = model_config[
'crop_resize_with_max_pool']
self.truncated = model_config['truncated']
self.use_focal_loss = model_config['use_focal_loss']
self.subsample_twice = model_config['subsample_twice']
self.rcnn_batch_size = model_config['rcnn_batch_size']
# some submodule config
self.feature_extractor_config = model_config[
'feature_extractor_config']
self.rpn_config = model_config['rpn_config']
# assigner
self.target_assigner = TargetAssigner(
model_config['target_assigner_config'])
# sampler
self.sampler = BalancedSampler(model_config['sampler_config'])
def get_cluster_loss(self, num_gt, bbox_feat, cls_feat):
"""
Args:
bbox_feat:(N,M,)
"""
cluster_loss = 0
# shape(N,M)
match = self.target_assigner.matcher.match
assert match.shape[0] == 1, 'only one num of batch is supported now'
match = match[0]
for i in range(num_gt):
cluster_loss += self.cluster_loss()
def pre_subsample(self, prediction_dict, feed_dict):
rois_batch = prediction_dict['rois_batch']
gt_boxes = feed_dict['gt_boxes']
gt_labels = feed_dict['gt_labels']
##########################
# assigner
##########################
rcnn_cls_targets, rcnn_reg_targets, rcnn_cls_weights, rcnn_reg_weights = self.target_assigner.assign(
rois_batch[:, :, 1:], gt_boxes, gt_labels)
##########################
# subsampler
##########################
cls_criterion = None
pos_indicator = rcnn_reg_weights > 0
indicator = rcnn_cls_weights > 0
# subsample from all
# shape (N,M)
batch_sampled_mask = self.sampler.subsample_batch(
self.rcnn_batch_size,
pos_indicator,
indicator=indicator,
criterion=cls_criterion)
rcnn_cls_weights = rcnn_cls_weights[batch_sampled_mask]
rcnn_reg_weights = rcnn_reg_weights[batch_sampled_mask]
num_cls_coeff = (rcnn_cls_weights > 0).sum(dim=-1)
num_reg_coeff = (rcnn_reg_weights > 0).sum(dim=-1)
# check
assert num_cls_coeff, 'bug happens'
assert num_reg_coeff, 'bug happens'
prediction_dict[
'rcnn_cls_weights'] = rcnn_cls_weights / num_cls_coeff.float()
prediction_dict[
'rcnn_reg_weights'] = rcnn_reg_weights / num_reg_coeff.float()
prediction_dict['rcnn_cls_targets'] = rcnn_cls_targets[
batch_sampled_mask]
prediction_dict['rcnn_reg_targets'] = rcnn_reg_targets[
batch_sampled_mask]
# update rois_batch
prediction_dict['rois_batch'] = rois_batch[batch_sampled_mask].view(
rois_batch.shape[0], -1, 5)
if not self.training:
# used for track
proposals_order = prediction_dict['proposals_order']
prediction_dict['proposals_order'] = proposals_order[
batch_sampled_mask]
# mask assignments like as before
match = self.target_assigner.matcher.assignments
prediction_dict['match'] = match[batch_sampled_mask]
def loss(self, prediction_dict, feed_dict):
"""
assign proposals label and subsample from them
Then calculate loss
"""
loss_dict = {}
# submodule loss
loss_dict.update(self.rpn_model.loss(prediction_dict, feed_dict))
# targets and weights
rcnn_cls_weights = prediction_dict['rcnn_cls_weights']
rcnn_reg_weights = prediction_dict['rcnn_reg_weights']
rcnn_cls_targets = prediction_dict['rcnn_cls_targets']
rcnn_reg_targets = prediction_dict['rcnn_reg_targets']
# classification loss
rcnn_cls_scores = prediction_dict['rcnn_cls_scores']
rcnn_cls_loss = self.rcnn_cls_loss(rcnn_cls_scores, rcnn_cls_targets)
rcnn_cls_loss *= rcnn_cls_weights
rcnn_cls_loss = rcnn_cls_loss.sum(dim=-1)
# bounding box regression L1 loss
rcnn_bbox_preds = prediction_dict['rcnn_bbox_preds']
rcnn_bbox_loss = self.rcnn_bbox_loss(rcnn_bbox_preds,
rcnn_reg_targets).sum(dim=-1)
rcnn_bbox_loss *= rcnn_reg_weights
# rcnn_bbox_loss *= rcnn_reg_weights
rcnn_bbox_loss = rcnn_bbox_loss.sum(dim=-1)
# rcnn_cls_feat_single = rcnn_cls_scores
rcnn_bbox_pred_single = rcnn_bbox_preds
# cluster_cls_loss = 0
cluster_bbox_loss = 0
num_gt = feed_dict['gt_boxes'].shape[1]
match = prediction_dict['match']
# import ipdb
# ipdb.set_trace()
for i in range(num_gt):
# cls_feat = rcnn_cls_feat_single[match == i]
# cluster_cls_loss += self.cluster_loss(cls_feat)
bbox_feat = rcnn_bbox_pred_single[match == i]
cluster_bbox_loss += self.cluster_loss(bbox_feat)
# loss weights has no gradients
loss_dict['rcnn/cls_loss'] = rcnn_cls_loss
loss_dict['rcnn/bbox_loss'] = rcnn_bbox_loss
loss_dict['rpn/cluster_bbox_loss'] = cluster_bbox_loss
# loss_dict['rpn/cluster_cls_loss'] = cluster_cls_loss
return loss_dict
class DetachDoubleIOUFasterRCNN(Model):
def forward(self, feed_dict):
prediction_dict = {}
# base model
base_feat = self.feature_extractor.first_stage_feature(
feed_dict['img'])
feed_dict.update({'base_feat': base_feat})
self.add_feat('base_feat', base_feat)
# rpn model
prediction_dict.update(self.rpn_model.forward(feed_dict))
# pre subsample for reduce consume of memory
if self.training:
self.pre_subsample(prediction_dict, feed_dict)
rois_batch = prediction_dict['rois_batch']
# note here base_feat (N,C,H,W),rois_batch (N,num_proposals,5)
pooled_feat = self.rcnn_pooling(base_feat, rois_batch.view(-1, 5))
# although it must be true
# if self.enable_reg:
# shape(N,C,1,1)
pooled_feat_reg = self.feature_extractor.second_stage_feature(
pooled_feat)
pooled_feat_reg = pooled_feat_reg.mean(3).mean(2)
rcnn_bbox_preds = self.rcnn_bbox_pred(pooled_feat_reg)
prediction_dict['rcnn_bbox_preds'] = rcnn_bbox_preds
if self.enable_cls:
pooled_feat_cls = self.feature_extractor.third_stage_feature(
pooled_feat.detach())
# shape(N,C)
pooled_feat_cls = pooled_feat_cls.mean(3).mean(2)
rcnn_cls_scores = self.rcnn_cls_pred(pooled_feat_cls)
rcnn_cls_probs = F.softmax(rcnn_cls_scores, dim=1)
prediction_dict['rcnn_cls_probs'] = rcnn_cls_probs
prediction_dict['rcnn_cls_scores'] = rcnn_cls_scores
# used for track
proposals_order = prediction_dict['proposals_order']
prediction_dict['second_rpn_anchors'] = prediction_dict['anchors'][
proposals_order]
prediction_dict['second_rpn_cls_probs'] = prediction_dict[
'rpn_cls_probs'][0][proposals_order]
if not self.training and self.enable_iou:
# calculate fake iou as final score,of course use scores to filter bg
pred_boxes = self.bbox_coder.decode_batch(
rcnn_bbox_preds.view(1, -1, 4), rois_batch[:, :, 1:5])
iou_matrix = box_ops.iou(pred_boxes, rois_batch[:, :, 1:5])[0]
iou_matrix[rcnn_cls_probs[:, 1] < 0.5] = 0
rcnn_cls_probs[:, 1] = iou_matrix
prediction_dict['rcnn_cls_probs'] = rcnn_cls_probs
if not self.training and self.enable_track_rois:
self.target_assigner.assign(rois_batch[:, :,
1:], feed_dict['gt_boxes'],
feed_dict['gt_labels'])
return prediction_dict
def init_weights(self):
# submodule init weights
self.feature_extractor.init_weights()
self.rpn_model.init_weights()
Filler.normal_init(self.rcnn_cls_pred, 0, 0.01, self.truncated)
Filler.normal_init(self.rcnn_bbox_pred, 0, 0.001, self.truncated)
def init_modules(self):
self.feature_extractor = ResNetFeatureExtractor(
self.feature_extractor_config)
self.rpn_model = RPNModel(self.rpn_config)
if self.pooling_mode == 'align':
self.rcnn_pooling = RoIAlignAvg(self.pooling_size,
self.pooling_size, 1.0 / 16.0)
elif self.pooling_mode == 'ps':
self.rcnn_pooling = PSRoIPool(7, 7, 1.0 / 16, 7, self.n_classes)
elif self.pooling_mode == 'psalign':
raise NotImplementedError('have not implemented yet!')
elif self.pooling_mode == 'deformable_psalign':
raise NotImplementedError('have not implemented yet!')
self.rcnn_cls_pred = nn.Linear(2048, self.n_classes)
if self.reduce:
in_channels = 2048
else:
in_channels = 2048 * 4 * 4
if self.class_agnostic:
self.rcnn_bbox_pred = nn.Linear(in_channels, 4)
else:
self.rcnn_bbox_pred = nn.Linear(in_channels, 4 * self.n_classes)
# loss module
if self.use_focal_loss:
self.rcnn_cls_loss = FocalLoss(2, alpha=0.25)
else:
self.rcnn_cls_loss = functools.partial(F.cross_entropy,
reduce=False)
self.rcnn_bbox_loss = nn.modules.SmoothL1Loss(reduce=False)
def init_param(self, model_config):
classes = model_config['classes']
self.classes = classes
self.n_classes = len(classes)
self.class_agnostic = model_config['class_agnostic']
self.pooling_size = model_config['pooling_size']
self.pooling_mode = model_config['pooling_mode']
self.crop_resize_with_max_pool = model_config[
'crop_resize_with_max_pool']
self.truncated = model_config['truncated']
self.use_focal_loss = model_config['use_focal_loss']
self.subsample_twice = model_config['subsample_twice']
self.rcnn_batch_size = model_config['rcnn_batch_size']
# some submodule config
self.feature_extractor_config = model_config[
'feature_extractor_config']
self.rpn_config = model_config['rpn_config']
# assigner
self.target_assigner = TargetAssigner(
model_config['target_assigner_config'])
# bbox_coder
self.bbox_coder = self.target_assigner.bbox_coder
# similarity
self.similarity_calc = self.target_assigner.similarity_calc
# sampler
self.sampler = BalancedSampler(model_config['sampler_config'])
# self.reduce = model_config.get('reduce')
self.reduce = True
# optimize cls
self.enable_cls = False
# optimize reg
self.enable_reg = True
# cal iou
self.enable_iou = False
# track good rois
self.enable_track_rois = False
def pre_subsample(self, prediction_dict, feed_dict):
rois_batch = prediction_dict['rois_batch']
gt_boxes = feed_dict['gt_boxes']
gt_labels = feed_dict['gt_labels']
##########################
# assigner
##########################
rcnn_cls_targets, rcnn_reg_targets, rcnn_cls_weights, rcnn_reg_weights = self.target_assigner.assign(
rois_batch[:, :, 1:], gt_boxes, gt_labels)
##########################
# subsampler
##########################
cls_criterion = None
if self.enable_reg:
# used for reg training
pos_indicator = rcnn_reg_weights > 0
indicator = None
elif self.enable_cls:
# used for cls training
pos_indicator = rcnn_cls_targets > 0
indicator = rcnn_cls_weights > 0
else:
raise ValueError("please check enable reg and enable cls again")
# subsample from all
# shape (N,M)
batch_sampled_mask = self.sampler.subsample_batch(
self.rcnn_batch_size,
pos_indicator,
indicator=indicator,
criterion=cls_criterion)
if self.enable_cls:
rcnn_cls_weights = rcnn_cls_weights[batch_sampled_mask]
num_cls_coeff = (rcnn_cls_weights > 0).sum(dim=-1)
assert num_cls_coeff, 'bug happens'
prediction_dict[
'rcnn_cls_weights'] = rcnn_cls_weights / num_cls_coeff.float()
# used for retriving statistic
prediction_dict['rcnn_cls_targets'] = rcnn_cls_targets[
batch_sampled_mask]
# used for fg/bg
rcnn_reg_weights = rcnn_reg_weights[batch_sampled_mask]
num_reg_coeff = (rcnn_reg_weights > 0).sum(dim=-1)
assert num_reg_coeff, 'bug happens'
prediction_dict[
'rcnn_reg_weights'] = rcnn_reg_weights / num_reg_coeff.float()
if self.enable_reg:
prediction_dict['rcnn_reg_targets'] = rcnn_reg_targets[
batch_sampled_mask]
prediction_dict['fake_match'] = self.target_assigner.analyzer.match[
batch_sampled_mask]
# update rois_batch
prediction_dict['rois_batch'] = rois_batch[batch_sampled_mask].view(
rois_batch.shape[0], -1, 5)
def loss(self, prediction_dict, feed_dict):
"""
assign proposals label and subsample from them
Then calculate loss
"""
loss_dict = {}
# submodule loss
loss_dict.update(self.rpn_model.loss(prediction_dict, feed_dict))
# add rcnn_cls_targets to get the statics of rpn
# loss_dict['rcnn_cls_targets'] = rcnn_cls_targets
if self.enable_cls:
# targets and weights
rcnn_cls_weights = prediction_dict['rcnn_cls_weights']
rcnn_cls_targets = prediction_dict['rcnn_cls_targets']
# classification loss
rcnn_cls_scores = prediction_dict['rcnn_cls_scores']
rcnn_cls_loss = self.rcnn_cls_loss(rcnn_cls_scores,
rcnn_cls_targets)
rcnn_cls_loss *= rcnn_cls_weights
rcnn_cls_loss = rcnn_cls_loss.sum(dim=-1)
loss_dict['rcnn_cls_loss'] = rcnn_cls_loss
if self.enable_reg:
rcnn_reg_weights = prediction_dict['rcnn_reg_weights']
rcnn_reg_targets = prediction_dict['rcnn_reg_targets']
# bounding box regression L1 loss
rcnn_bbox_preds = prediction_dict['rcnn_bbox_preds']
rcnn_bbox_loss = self.rcnn_bbox_loss(rcnn_bbox_preds,
rcnn_reg_targets).sum(dim=-1)
rcnn_bbox_loss *= rcnn_reg_weights
rcnn_bbox_loss = rcnn_bbox_loss.sum(dim=-1)
# loss weights has no gradients
loss_dict['rcnn_bbox_loss'] = rcnn_bbox_loss
# analysis ap
# when enable cls,otherwise it is no sense
if self.enable_cls:
rcnn_cls_probs = prediction_dict['rcnn_cls_probs']
num_gt = feed_dict['gt_labels'].numel()
fake_match = prediction_dict['fake_match']
self.target_assigner.analyzer.analyze_ap(fake_match,
rcnn_cls_probs[:, 1],
num_gt,
thresh=0.5)
return loss_dict
class PostCLSFasterRCNN(Model):
def forward(self, feed_dict):
# some pre forward hook
self.clean_stats()
prediction_dict = {}
################################
# first stage
################################
# base model
base_feat = self.feature_extractor.first_stage_feature(
feed_dict['img'])
feed_dict.update({'base_feat': base_feat})
self.add_feat('base_feat', base_feat)
# rpn model
prediction_dict.update(self.rpn_model.forward(feed_dict))
#####################################
# second stage(bbox regression)
#####################################
# pre subsample for reduce consume of memory
if self.training and self.enable_reg:
# append gt
if self.use_gt:
prediction_dict['rois_batch'] = self.append_gt(
prediction_dict['rois_batch'], feed_dict['gt_boxes'])
stats = self.pre_subsample(prediction_dict, feed_dict)
# rois stats
self.stats.update(stats)
rois_batch = prediction_dict['rois_batch']
# note here base_feat (N,C,H,W),rois_batch (N,num_proposals,5)
pooled_feat = self.rcnn_pooling(base_feat, rois_batch.view(-1, 5))
# although it must be true
# if self.enable_reg:
# shape(N,C,1,1)
pooled_feat_reg = self.feature_extractor.second_stage_feature(
pooled_feat)
pooled_feat_reg = pooled_feat_reg.mean(3).mean(2)
rcnn_bbox_preds = self.rcnn_bbox_pred(pooled_feat_reg)
prediction_dict['rcnn_bbox_preds'] = rcnn_bbox_preds
# used for tracking
proposals_order = prediction_dict['proposals_order']
prediction_dict['second_rpn_anchors'] = prediction_dict['anchors'][
proposals_order]
prediction_dict['second_rpn_cls_probs'] = prediction_dict[
'rpn_cls_probs'][0][proposals_order]
###########################################
# third stage(predict scores of final bbox)
###########################################
# decode rcnn bbox, generate rcnn rois batch
pred_boxes = self.bbox_coder.decode_batch(
rcnn_bbox_preds.view(1, -1, 4), rois_batch[:, :, 1:5])
rcnn_rois_batch = torch.zeros_like(rois_batch)
rcnn_rois_batch[:, :, 1:5] = pred_boxes.detach()
prediction_dict['rcnn_rois_batch'] = rcnn_rois_batch
if self.training and self.use_gt:
# append gt
rcnn_rois_batch = self.append_gt(rcnn_rois_batch,
feed_dict['gt_boxes'])
prediction_dict['rcnn_rois_batch'] = rcnn_rois_batch
if self.enable_cls:
if self.training:
rcnn_stats = self.pre_subsample(prediction_dict,
feed_dict,
stage='rcnn')
# rcnn stats
self.rcnn_stats.update(rcnn_stats)
# rois after subsample
pred_rois = prediction_dict['rcnn_rois_batch']
pooled_feat_cls = self.rcnn_pooling(base_feat,
pred_rois.view(-1, 5))
pooled_feat_cls = self.feature_extractor.third_stage_feature(
pooled_feat_cls.detach())
# shape(N,C)
pooled_feat_cls = pooled_feat_cls.mean(3).mean(2)
rcnn_cls_scores = self.rcnn_cls_pred(pooled_feat_cls)
rcnn_cls_probs = F.softmax(rcnn_cls_scores, dim=1)
prediction_dict['rcnn_cls_probs'] = rcnn_cls_probs
prediction_dict['rcnn_cls_scores'] = rcnn_cls_scores
###################################
# stats
###################################
# import ipdb
# ipdb.set_trace()
if not self.training or (self.enable_track_rois
and not self.enable_reg):
# when enable reg, skip it,
stats = self.target_assigner.assign(rois_batch[:, :, 1:],
feed_dict['gt_boxes'],
feed_dict['gt_labels'])[-1]
self.stats.update(stats)
if not self.training or (self.enable_track_rcnn_rois
and not self.enable_cls):
# when enable cls, skip it
stats = self.target_assigner.assign(rcnn_rois_batch[:, :, 1:],
feed_dict['gt_boxes'],
feed_dict['gt_labels'])[-1]
self.rcnn_stats.update(stats)
# analysis ap
# when enable cls, otherwise it is no sense
if self.training and self.enable_cls:
rcnn_cls_probs = prediction_dict['rcnn_cls_probs']
num_gt = feed_dict['gt_labels'].numel()
fake_match = self.rcnn_stats['match']
stats = self.target_assigner.analyzer.analyze_ap(fake_match,
rcnn_cls_probs[:,
1],
num_gt,
thresh=0.5)
# collect stats
self.rcnn_stats.update(stats)
return prediction_dict
def append_gt(self, rois_batch, gt_boxes):
################################
# append gt_boxes to rois_batch for losses
################################
# may be some bugs here
gt_boxes_append = torch.zeros(gt_boxes.shape[0], gt_boxes.shape[1],
5).type_as(gt_boxes)
gt_boxes_append[:, :, 1:5] = gt_boxes[:, :, :4]
# cat gt_boxes to rois_batch
rois_batch = torch.cat([rois_batch, gt_boxes_append], dim=1)
return rois_batch
def init_weights(self):
# submodule init weights
self.feature_extractor.init_weights()
self.rpn_model.init_weights()
Filler.normal_init(self.rcnn_cls_pred, 0, 0.01, self.truncated)
Filler.normal_init(self.rcnn_bbox_pred, 0, 0.001, self.truncated)
def init_modules(self):
self.feature_extractor = ResNetFeatureExtractor(
self.feature_extractor_config)
self.rpn_model = RPNModel(self.rpn_config)
if self.pooling_mode == 'align':
self.rcnn_pooling = RoIAlignAvg(self.pooling_size,
self.pooling_size, 1.0 / 16.0)
elif self.pooling_mode == 'ps':
self.rcnn_pooling = PSRoIPool(7, 7, 1.0 / 16, 7, self.n_classes)
elif self.pooling_mode == 'psalign':
raise NotImplementedError('have not implemented yet!')
elif self.pooling_mode == 'deformable_psalign':
raise NotImplementedError('have not implemented yet!')
self.rcnn_cls_pred = nn.Linear(2048, self.n_classes)
if self.reduce:
in_channels = 2048
else:
in_channels = 2048 * 4 * 4
if self.class_agnostic:
self.rcnn_bbox_pred = nn.Linear(in_channels, 4)
else:
self.rcnn_bbox_pred = nn.Linear(in_channels, 4 * self.n_classes)
# loss module
if self.use_focal_loss:
self.rcnn_cls_loss = FocalLoss(2, alpha=0.25, gamma=2)
else:
self.rcnn_cls_loss = functools.partial(F.cross_entropy,
reduce=False)
self.rcnn_bbox_loss = nn.modules.SmoothL1Loss(reduce=False)
def init_param(self, model_config):
classes = model_config['classes']
self.classes = classes
self.n_classes = len(classes)
self.class_agnostic = model_config['class_agnostic']
self.pooling_size = model_config['pooling_size']
self.pooling_mode = model_config['pooling_mode']
self.crop_resize_with_max_pool = model_config[
'crop_resize_with_max_pool']
self.truncated = model_config['truncated']
self.use_focal_loss = model_config['use_focal_loss']
self.subsample_twice = model_config['subsample_twice']
self.rcnn_batch_size = model_config['rcnn_batch_size']
# some submodule config
self.feature_extractor_config = model_config[
'feature_extractor_config']
self.rpn_config = model_config['rpn_config']
# assigner
self.target_assigner = TargetAssigner(
model_config['target_assigner_config'])
# bbox_coder
self.bbox_coder = self.target_assigner.bbox_coder
# similarity
self.similarity_calc = self.target_assigner.similarity_calc
# sampler
self.sampler = BalancedSampler(model_config['sampler_config'])
# self.reduce = model_config.get('reduce')
self.reduce = True
# optimize cls
self.enable_cls = True
# optimize reg
self.enable_reg = False
# cal iou
self.enable_iou = False
# track good rois
self.enable_track_rois = True
self.enable_track_rcnn_rois = True
# eval the final bbox
self.enable_eval_final_bbox = True
# use gt
self.use_gt = False
# if self.enable_eval_final_bbox:
self.subsample = False
def clean_stats(self):
# rois bbox
self.stats = {
'num_det': 1,
'num_tp': 0,
'matched_thresh': 0,
'recall_thresh': 0,
'match': None
}
# rcnn bbox(final bbox)
self.rcnn_stats = {
'num_det': 1,
'num_tp': 0,
'matched_thresh': 0,
'recall_thresh': 0,
'match': None
}
def pre_subsample(self, prediction_dict, feed_dict, stage='rpn'):
if stage == 'rpn':
rois_name = 'rois_batch'
else:
rois_name = 'rcnn_rois_batch'
rois_batch = prediction_dict[rois_name]
gt_boxes = feed_dict['gt_boxes']
gt_labels = feed_dict['gt_labels']
# append gt
# rois_batch = self.append_gt(rois_batch, gt_boxes)
##########################
# assigner
##########################
# import ipdb
# ipdb.set_trace()
rcnn_cls_targets, rcnn_reg_targets, rcnn_cls_weights, rcnn_reg_weights, stats = self.target_assigner.assign(
rois_batch[:, :, 1:], gt_boxes, gt_labels)
##########################
# subsampler
##########################
if self.subsample:
cls_criterion = None
if self.enable_reg:
# used for reg training
pos_indicator = rcnn_reg_weights > 0
indicator = None
elif self.enable_cls:
# used for cls training
pos_indicator = rcnn_cls_targets > 0
indicator = rcnn_cls_weights > 0
else:
raise ValueError(
"please check enable reg and enable cls again")
# subsample from all
# shape (N,M)
batch_sampled_mask = self.sampler.subsample_batch(
self.rcnn_batch_size,
pos_indicator,
indicator=indicator,
criterion=cls_criterion)
else:
batch_sampled_mask = torch.ones_like(rcnn_cls_weights > 0)
if self.enable_cls:
rcnn_cls_weights = rcnn_cls_weights[batch_sampled_mask]
num_cls_coeff = (rcnn_cls_weights > 0).sum(dim=-1)
assert num_cls_coeff, 'bug happens'
prediction_dict[
'rcnn_cls_weights'] = rcnn_cls_weights / num_cls_coeff.float()
# used for retriving statistic
prediction_dict['rcnn_cls_targets'] = rcnn_cls_targets[
batch_sampled_mask]
# used for fg/bg
rcnn_reg_weights = rcnn_reg_weights[batch_sampled_mask]
num_reg_coeff = (rcnn_reg_weights > 0).sum(dim=-1)
num_reg_coeff = torch.max(num_reg_coeff,
torch.ones_like(num_reg_coeff))
# import ipdb
# ipdb.set_trace()
# assert num_reg_coeff, 'bug happens'
prediction_dict[
'rcnn_reg_weights'] = rcnn_reg_weights / num_reg_coeff.float()
if self.enable_reg:
prediction_dict['rcnn_reg_targets'] = rcnn_reg_targets[
batch_sampled_mask]
# here use rcnn_target_assigner for final bbox pred
stats['match'] = stats['match'][batch_sampled_mask]
# update rois_batch
prediction_dict[rois_name] = rois_batch[batch_sampled_mask].view(
rois_batch.shape[0], -1, 5)
return stats
def loss(self, prediction_dict, feed_dict):
"""
assign proposals label and subsample from them
Then calculate loss
"""
loss_dict = {}
# submodule loss
# add rcnn_cls_targets to get the statics of rpn
# loss_dict['rcnn_cls_targets'] = rcnn_cls_targets
if self.enable_cls:
# targets and weights
rcnn_cls_weights = prediction_dict['rcnn_cls_weights']
rcnn_cls_targets = prediction_dict['rcnn_cls_targets']
# classification loss
rcnn_cls_scores = prediction_dict['rcnn_cls_scores']
rcnn_cls_loss = self.rcnn_cls_loss(rcnn_cls_scores,
rcnn_cls_targets)
rcnn_cls_loss *= rcnn_cls_weights
rcnn_cls_loss = rcnn_cls_loss.sum(dim=-1)
loss_dict['rcnn_cls_loss'] = rcnn_cls_loss
if self.enable_reg:
loss_dict.update(self.rpn_model.loss(prediction_dict, feed_dict))
rcnn_reg_weights = prediction_dict['rcnn_reg_weights']
rcnn_reg_targets = prediction_dict['rcnn_reg_targets']
# bounding box regression L1 loss
rcnn_bbox_preds = prediction_dict['rcnn_bbox_preds']
rcnn_bbox_loss = self.rcnn_bbox_loss(rcnn_bbox_preds,
rcnn_reg_targets).sum(dim=-1)
rcnn_bbox_loss *= rcnn_reg_weights
rcnn_bbox_loss = rcnn_bbox_loss.sum(dim=-1)
# loss weights has no gradients
loss_dict['rcnn_bbox_loss'] = rcnn_bbox_loss
return loss_dict
class Mono3DFinalFasterRCNN(Model):
def forward(self, feed_dict):
prediction_dict = {}
# base model
base_feat = self.feature_extractor.first_stage_feature(
feed_dict['img'])
feed_dict.update({'base_feat': base_feat})
# rpn model
prediction_dict.update(self.rpn_model.forward(feed_dict))
if self.training:
self.pre_subsample(prediction_dict, feed_dict)
rois_batch = prediction_dict['rois_batch']
# note here base_feat (N,C,H,W),rois_batch (N,num_proposals,5)
pooled_feat = self.rcnn_pooling(base_feat, rois_batch.view(-1, 5))
# shape(N,C,1,1)
pooled_feat = self.feature_extractor.second_stage_feature(pooled_feat)
rcnn_cls_scores_map = self.rcnn_cls_pred(pooled_feat)
rcnn_cls_scores = rcnn_cls_scores_map.mean(3).mean(2)
saliency_map = F.softmax(rcnn_cls_scores_map, dim=1)
rcnn_cls_probs = F.softmax(rcnn_cls_scores, dim=1)
pooled_feat = pooled_feat * saliency_map[:, 1:, :, :]
reduced_pooled_feat = pooled_feat.mean(3).mean(2)
rcnn_bbox_preds = self.rcnn_bbox_pred(reduced_pooled_feat)
# rcnn_cls_scores = self.rcnn_cls_pred(pooled_feat)
rcnn_3d = self.rcnn_3d_pred(reduced_pooled_feat)
rcnn_cls_probs = F.softmax(rcnn_cls_scores, dim=1)
prediction_dict['rcnn_cls_probs'] = rcnn_cls_probs
prediction_dict['rcnn_bbox_preds'] = rcnn_bbox_preds
prediction_dict['rcnn_cls_scores'] = rcnn_cls_scores
# used for track
proposals_order = prediction_dict['proposals_order']
prediction_dict['second_rpn_anchors'] = prediction_dict['anchors'][
proposals_order]
###################################
# 3d training
###################################
# if self.training and self.train_3d:
# prediction_dict['rois_batch'] = final_rois_batch
# self.pre_subsample(prediction_dict, feed_dict)
# final_rois_batch = prediction_dict['rois_batch']
# shape(M,C,7,7)
# mono_3d_pooled_feat = self.rcnn_pooling(base_feat,
# final_rois_batch.view(-1, 5))
# mono_3d_pooled_feat = self.feature_extractor.third_stage_feature(
# mono_3d_pooled_feat)
# mono_3d_pooled_feat = mono_3d_pooled_feat.mean(3).mean(2)
prediction_dict['rcnn_3d'] = rcnn_3d
if not self.training:
rcnn_bbox_preds = rcnn_bbox_preds.detach()
final_bbox = self.target_assigner.bbox_coder.decode_batch(
rcnn_bbox_preds.unsqueeze(0), rois_batch[:, :, 1:])
final_rois_inds = torch.zeros_like(final_bbox[:, :, -1:])
final_rois_batch = torch.cat([final_rois_inds, final_bbox], dim=-1)
rcnn_3d = self.target_assigner.bbox_coder_3d.decode_batch_bbox(
rcnn_3d, final_rois_batch)
prediction_dict['rcnn_3d'] = rcnn_3d
return prediction_dict
def pre_forward(self):
pass
# params
# if self.train_3d and self.training and not self.train_2d:
# self.freeze_modules()
# for parameter in self.feature_extractor.third_stage_feature.parameters(
# ):
# parameter.requires_grad = True
# for param in self.rcnn_3d_pred.parameters():
# param.requires_grad = True
# self.freeze_bn(self)
# self.unfreeze_bn(self.feature_extractor.third_stage_feature)
def init_weights(self):
# submodule init weights
self.feature_extractor.init_weights()
self.rpn_model.init_weights()
Filler.normal_init(self.rcnn_cls_pred, 0, 0.01, self.truncated)
Filler.normal_init(self.rcnn_bbox_pred, 0, 0.001, self.truncated)
def init_modules(self):
self.feature_extractor = ResNetFeatureExtractor(
self.feature_extractor_config)
self.rpn_model = RPNModel(self.rpn_config)
if self.pooling_mode == 'align':
self.rcnn_pooling = RoIAlignAvg(self.pooling_size,
self.pooling_size, 1.0 / 16.0)
elif self.pooling_mode == 'ps':
self.rcnn_pooling = PSRoIPool(7, 7, 1.0 / 16, 7, self.n_classes)
elif self.pooling_mode == 'psalign':
raise NotImplementedError('have not implemented yet!')
elif self.pooling_mode == 'deformable_psalign':
raise NotImplementedError('have not implemented yet!')
self.rcnn_cls_pred = nn.Conv2d(2048, self.n_classes, 3, 1, 1)
# self.rcnn_cls_pred = nn.Linear(2048, self.n_classes)
if self.reduce:
in_channels = 2048
else:
in_channels = 2048 * 4 * 4
if self.class_agnostic:
self.rcnn_bbox_pred = nn.Linear(in_channels, 4)
else:
self.rcnn_bbox_pred = nn.Linear(in_channels, 4 * self.n_classes)
# loss module
if self.use_focal_loss:
self.rcnn_cls_loss = FocalLoss(2)
else:
self.rcnn_cls_loss = functools.partial(F.cross_entropy,
reduce=False)
self.rcnn_bbox_loss = nn.modules.SmoothL1Loss(reduce=False)
# self.rcnn_3d_pred = nn.Linear(c, 3 + 4 + 11 + 2 + 1)
self.rcnn_3d_pred = nn.Linear(in_channels, 3 + 4 * 2)
self.rcnn_3d_loss = OrientationLoss(split_loss=True)
def init_param(self, model_config):
classes = model_config['classes']
self.classes = classes
self.n_classes = len(classes)
self.class_agnostic = model_config['class_agnostic']
self.pooling_size = model_config['pooling_size']
self.pooling_mode = model_config['pooling_mode']
self.crop_resize_with_max_pool = model_config[
'crop_resize_with_max_pool']
self.truncated = model_config['truncated']
self.use_focal_loss = model_config['use_focal_loss']
self.subsample_twice = model_config['subsample_twice']
self.rcnn_batch_size = model_config['rcnn_batch_size']
# some submodule config
self.feature_extractor_config = model_config[
'feature_extractor_config']
self.rpn_config = model_config['rpn_config']
# sampler
self.sampler = BalancedSampler(model_config['sampler_config'])
# self.reduce = model_config.get('reduce')
self.reduce = True
self.visualizer = FeatVisualizer()
self.num_bins = 4
# more accurate bbox for 3d prediction
# if self.train_3d:
# fg_thresh = 0.6
# else:
# fg_thresh = 0.5
# model_config['target_assigner_config']['fg_thresh'] = fg_thresh
# assigner
self.target_assigner = TargetAssigner(
model_config['target_assigner_config'])
self.profiler = Profiler()
self.h_cat = False
def pre_subsample(self, prediction_dict, feed_dict):
rois_batch = prediction_dict['rois_batch']
gt_boxes = feed_dict['gt_boxes']
gt_labels = feed_dict['gt_labels']
# shape(N,7)
gt_boxes_3d = feed_dict['gt_boxes_3d']
# orient
cls_orient = torch.unsqueeze(feed_dict['cls_orient'], dim=-1).float()
reg_orient = feed_dict['reg_orient']
orient = torch.cat([cls_orient, reg_orient], dim=-1)
gt_boxes_3d = torch.cat([gt_boxes_3d[:, :, :3], orient], dim=-1)
##########################
# assigner
##########################
rcnn_cls_targets, rcnn_reg_targets,\
rcnn_cls_weights, rcnn_reg_weights,\
rcnn_reg_targets_3d, rcnn_reg_weights_3d = self.target_assigner.assign(
rois_batch[:, :, 1:], gt_boxes, gt_boxes_3d, gt_labels)
##########################
# subsampler
##########################
cls_criterion = None
pos_indicator = rcnn_reg_weights > 0
indicator = rcnn_cls_weights > 0
# subsample from all
# shape (N,M)
batch_sampled_mask = self.sampler.subsample_batch(
self.rcnn_batch_size,
pos_indicator,
indicator=indicator,
criterion=cls_criterion)
rcnn_cls_weights = rcnn_cls_weights[batch_sampled_mask]
rcnn_reg_weights = rcnn_reg_weights[batch_sampled_mask]
rcnn_reg_weights_3d = rcnn_reg_weights_3d[batch_sampled_mask]
num_cls_coeff = (rcnn_cls_weights > 0).sum(dim=-1)
num_reg_coeff = (rcnn_reg_weights > 0).sum(dim=-1)
# check
assert num_cls_coeff, 'bug happens'
# assert num_reg_coeff, 'bug happens'
if num_reg_coeff == 0:
num_reg_coeff = torch.ones_like(num_reg_coeff)
prediction_dict[
'rcnn_cls_weights'] = rcnn_cls_weights / num_cls_coeff.float()
prediction_dict[
'rcnn_reg_weights'] = rcnn_reg_weights / num_reg_coeff.float()
prediction_dict[
'rcnn_reg_weights_3d'] = rcnn_reg_weights_3d / num_reg_coeff.float(
)
prediction_dict['rcnn_cls_targets'] = rcnn_cls_targets[
batch_sampled_mask]
prediction_dict['rcnn_reg_targets'] = rcnn_reg_targets[
batch_sampled_mask]
prediction_dict['rcnn_reg_targets_3d'] = rcnn_reg_targets_3d[
batch_sampled_mask]
# update rois_batch
prediction_dict['rois_batch'] = rois_batch[batch_sampled_mask].view(
rois_batch.shape[0], -1, 5)
def loss(self, prediction_dict, feed_dict):
"""
assign proposals label and subsample from them
Then calculate loss
"""
# import ipdb
# ipdb.set_trace()
loss_dict = {}
# submodule loss
loss_dict.update(self.rpn_model.loss(prediction_dict, feed_dict))
# targets and weights
rcnn_cls_weights = prediction_dict['rcnn_cls_weights']
rcnn_reg_weights = prediction_dict['rcnn_reg_weights']
rcnn_cls_targets = prediction_dict['rcnn_cls_targets']
rcnn_reg_targets = prediction_dict['rcnn_reg_targets']
# classification loss
rcnn_cls_scores = prediction_dict['rcnn_cls_scores']
rcnn_cls_loss = self.rcnn_cls_loss(rcnn_cls_scores, rcnn_cls_targets)
rcnn_cls_loss *= rcnn_cls_weights
rcnn_cls_loss = rcnn_cls_loss.sum(dim=-1)
# bounding box regression L1 loss
rcnn_bbox_preds = prediction_dict['rcnn_bbox_preds']
rcnn_bbox_loss = self.rcnn_bbox_loss(rcnn_bbox_preds,
rcnn_reg_targets).sum(dim=-1)
rcnn_bbox_loss *= rcnn_reg_weights
rcnn_bbox_loss = rcnn_bbox_loss.sum(dim=-1)
loss_dict['rcnn_cls_loss'] = rcnn_cls_loss
loss_dict['rcnn_bbox_loss'] = rcnn_bbox_loss
######################################
# 3d loss
######################################
rcnn_reg_weights_3d = prediction_dict['rcnn_reg_weights_3d']
rcnn_reg_targets_3d = prediction_dict['rcnn_reg_targets_3d']
rcnn_3d = prediction_dict['rcnn_3d']
# dims
rcnn_3d_loss_dims = self.rcnn_bbox_loss(
rcnn_3d[:, :3], rcnn_reg_targets_3d[:, :3]).sum(dim=-1)
# angles
res = self.rcnn_3d_loss(rcnn_3d[:, 3:], rcnn_reg_targets_3d[:, 3:])
for res_loss_key in res:
tmp = res[res_loss_key] * rcnn_reg_weights_3d
res[res_loss_key] = tmp.sum(dim=-1)
loss_dict.update(res)
rcnn_3d_loss = rcnn_3d_loss_dims * rcnn_reg_weights_3d
rcnn_3d_loss = rcnn_3d_loss.sum(dim=-1)
loss_dict['rcnn_3d_loss'] = rcnn_3d_loss
# stats of orients
cls_orient_preds = rcnn_3d[:, 3:5]
cls_orient = rcnn_reg_targets_3d[:, 3]
_, cls_orient_preds_argmax = torch.max(cls_orient_preds, dim=-1)
orient_tp_mask = cls_orient.type_as(
cls_orient_preds_argmax) == cls_orient_preds_argmax
mask = (rcnn_reg_weights_3d > 0) & (rcnn_reg_targets_3d[:, 3] > -1)
orient_tp_mask = orient_tp_mask[mask]
orient_tp_num = orient_tp_mask.int().sum().item()
orient_all_num = orient_tp_mask.numel()
# store all stats in target assigner
self.target_assigner.stat.update({
# 'angle_num_tp': torch.tensor(0),
# 'angle_num_all': 1,
# stats of orient
'orient_tp_num': orient_tp_num,
# 'orient_tp_num2': orient_tp_num2,
# 'orient_tp_num3': orient_4s_tp_num,
# 'orient_all_num3': orient_all_num3,
# 'orient_pr': orient_pr,
'orient_all_num': orient_all_num,
# 'orient_tp_num4': orient_tp_num4,
# 'orient_all_num4': orient_all_num4,
# 'cls_orient_2s_all_num': depth_ind_all_num,
# 'cls_orient_2s_tp_num': depth_ind_tp_num
})
return loss_dict
class DoubleIoUSecondStageFasterRCNN(Model):
def forward(self, feed_dict):
# import ipdb
# ipdb.set_trace()
# self.visualizer.visualize(
# feed_dict['img'],
# nn.Sequential(self.feature_extractor.first_stage_feature,
# self.feature_extractor.first_stage_cls_feature))
prediction_dict = {}
# base model
base_feat = self.feature_extractor.first_stage_feature(
feed_dict['img'])
feed_dict.update({'base_feat': base_feat})
self.add_feat('base_feat', base_feat)
# rpn model
prediction_dict.update(self.rpn_model.forward(feed_dict))
# shape(N,num_proposals,5)
# pre subsample for reduce consume of memory
if self.training:
self.pre_subsample(prediction_dict, feed_dict)
rois_batch = prediction_dict['rois_batch']
# note here base_feat (N,C,H,W),rois_batch (N,num_proposals,5)
pooled_feat = self.rcnn_pooling(base_feat, rois_batch.view(-1, 5))
pooled_feat = F.relu(self.rcnn_conv(pooled_feat), inplace=True)
pooled_feat_cls = self.rcnn_pooled_feat_cls(pooled_feat.detach())
pooled_feat_bbox = self.rcnn_pooled_feat_bbox(pooled_feat)
# classification
pooled_feat_cls = self.feature_extractor.third_stage_feature(
pooled_feat_cls)
pooled_feat_cls = pooled_feat_cls.mean(3).mean(2)
rcnn_cls_scores = self.rcnn_cls_pred(pooled_feat_cls)
rcnn_cls_probs = F.softmax(rcnn_cls_scores, dim=1)
# regression
pooled_feat_reg = self.feature_extractor.second_stage_feature(
pooled_feat_bbox)
pooled_feat_reg = pooled_feat_reg.mean(3).mean(2)
rcnn_bbox_preds = self.rcnn_bbox_pred(pooled_feat_reg)
prediction_dict['rcnn_cls_probs'] = rcnn_cls_probs
prediction_dict['rcnn_bbox_preds'] = rcnn_bbox_preds
prediction_dict['rcnn_cls_scores'] = rcnn_cls_scores
# used for track
proposals_order = prediction_dict['proposals_order']
prediction_dict['second_rpn_anchors'] = prediction_dict['anchors'][
proposals_order]
return prediction_dict
def unfreeze_part_modules(self, model):
# model = self.feature_extractor.third_stage_feature
for param in model.parameters():
param.requires_grad = True
# model = self.feature_extractor.first_stage_feature
# def freeze_part_modules(self):
# pass
# def rcnn_cls_pred(pooled_feat)
def init_weights(self):
# submodule init weights
self.feature_extractor.init_weights()
self.rpn_model.init_weights()
Filler.normal_init(self.rcnn_cls_pred, 0, 0.01, self.truncated)
Filler.normal_init(self.rcnn_bbox_pred, 0, 0.001, self.truncated)
# if self.training_stage == 'cls':
# self.freeze_modules()
# unfreeze part
# models = [
# # self.feature_extractor.first_stage_feature,
# # self.feature_extractor.second_stage_feature,
# self.feature_extractor.third_stage_feature
# ]
# for model in models:
# self.unfreeze_part_modules(model)
def init_modules(self):
self.feature_extractor = ResNetFeatureExtractor(
self.feature_extractor_config)
self.rpn_model = RPNModel(self.rpn_config)
if self.pooling_mode == 'align':
self.rcnn_pooling = RoIAlignAvg(self.pooling_size,
self.pooling_size, 1.0 / 16.0)
elif self.pooling_mode == 'ps':
self.rcnn_pooling = PSRoIPool(7, 7, 1.0 / 16, 7, self.n_classes)
elif self.pooling_mode == 'psalign':
raise NotImplementedError('have not implemented yet!')
elif self.pooling_mode == 'deformable_psalign':
raise NotImplementedError('have not implemented yet!')
self.rcnn_cls_pred = nn.Linear(2048, self.n_classes)
if self.reduce:
in_channels = 2048
else:
in_channels = 2048 * 4 * 4
if self.class_agnostic:
self.rcnn_bbox_pred = nn.Linear(in_channels, 4)
else:
self.rcnn_bbox_pred = nn.Linear(in_channels, 4 * self.n_classes)
# loss module
if self.use_focal_loss:
self.rcnn_cls_loss = FocalLoss(2)
else:
self.rcnn_cls_loss = functools.partial(F.cross_entropy,
reduce=False)
self.rcnn_bbox_loss = nn.modules.SmoothL1Loss(reduce=False)
# decouple cls and bbox
self.rcnn_conv = nn.Conv2d(1024, 512, 3, 1, 1, bias=True)
self.rcnn_pooled_feat_cls = nn.Conv2d(512, 1024, 1, 1, 0)
self.rcnn_pooled_feat_bbox = nn.Conv2d(512, 1024, 1, 1, 0)
def init_param(self, model_config):
classes = model_config['classes']
self.classes = classes
self.n_classes = len(classes)
self.class_agnostic = model_config['class_agnostic']
self.pooling_size = model_config['pooling_size']
self.pooling_mode = model_config['pooling_mode']
self.crop_resize_with_max_pool = model_config[
'crop_resize_with_max_pool']
self.truncated = model_config['truncated']
self.use_focal_loss = model_config['use_focal_loss']
self.subsample_twice = model_config['subsample_twice']
self.rcnn_batch_size = model_config['rcnn_batch_size']
# some submodule config
self.feature_extractor_config = model_config[
'feature_extractor_config']
self.rpn_config = model_config['rpn_config']
# assigner
self.target_assigner = TargetAssigner(
model_config['target_assigner_config'])
# sampler
self.sampler = BalancedSampler(model_config['sampler_config'])
# self.sampler = DetectionSampler({'fg_fraction': 1})
# self.reduce = model_config.get('reduce')
self.reduce = True
self.visualizer = FeatVisualizer()
def pre_subsample(self, prediction_dict, feed_dict):
rois_batch = prediction_dict['rois_batch']
gt_boxes = feed_dict['gt_boxes']
gt_labels = feed_dict['gt_labels']
##########################
# assigner
##########################
# import ipdb
# ipdb.set_trace()
rcnn_cls_targets, rcnn_reg_targets, rcnn_cls_weights, rcnn_reg_weights = self.target_assigner.assign(
rois_batch[:, :, 1:], gt_boxes, gt_labels)
##########################
# subsampler
##########################
# import ipdb
# ipdb.set_trace()
cls_criterion = None
pos_indicator = rcnn_reg_weights > 0
indicator = rcnn_cls_weights > 0
# indicator = None
# subsample from all
# shape (N,M)
batch_sampled_mask = self.sampler.subsample_batch(
self.rcnn_batch_size,
pos_indicator,
indicator=indicator,
criterion=cls_criterion)
rcnn_cls_weights = rcnn_cls_weights[batch_sampled_mask]
rcnn_reg_weights = rcnn_reg_weights[batch_sampled_mask]
num_cls_coeff = (rcnn_cls_weights > 0).sum(dim=-1)
num_reg_coeff = (rcnn_reg_weights > 0).sum(dim=-1)
# check
assert num_cls_coeff, 'bug happens'
assert num_reg_coeff, 'bug happens'
prediction_dict[
'rcnn_cls_weights'] = rcnn_cls_weights / num_cls_coeff.float()
prediction_dict[
'rcnn_reg_weights'] = rcnn_reg_weights / num_reg_coeff.float()
prediction_dict['rcnn_cls_targets'] = rcnn_cls_targets[
batch_sampled_mask]
prediction_dict['fake_match'] = self.target_assigner.analyzer.match[
batch_sampled_mask]
prediction_dict['rcnn_reg_targets'] = rcnn_reg_targets[
batch_sampled_mask]
# update rois_batch
prediction_dict['rois_batch'] = rois_batch[batch_sampled_mask].view(
rois_batch.shape[0], -1, 5)
if not self.training:
# used for track
proposals_order = prediction_dict['proposals_order']
prediction_dict['proposals_order'] = proposals_order[
batch_sampled_mask]
def loss(self, prediction_dict, feed_dict):
"""
assign proposals label and subsample from them
Then calculate loss
"""
loss_dict = {}
# submodule loss
loss_dict.update(self.rpn_model.loss(prediction_dict, feed_dict))
# targets and weights
rcnn_cls_weights = prediction_dict['rcnn_cls_weights']
rcnn_reg_weights = prediction_dict['rcnn_reg_weights']
rcnn_cls_targets = prediction_dict['rcnn_cls_targets']
rcnn_reg_targets = prediction_dict['rcnn_reg_targets']
# classification loss
rcnn_cls_scores = prediction_dict['rcnn_cls_scores']
rcnn_cls_loss = self.rcnn_cls_loss(rcnn_cls_scores, rcnn_cls_targets)
rcnn_cls_loss *= rcnn_cls_weights
rcnn_cls_loss = rcnn_cls_loss.sum(dim=-1)
# bounding box regression L1 loss
rcnn_bbox_preds = prediction_dict['rcnn_bbox_preds']
rcnn_bbox_loss = self.rcnn_bbox_loss(rcnn_bbox_preds,
rcnn_reg_targets).sum(dim=-1)
rcnn_bbox_loss *= rcnn_reg_weights
rcnn_bbox_loss *= rcnn_reg_weights
rcnn_bbox_loss = rcnn_bbox_loss.sum(dim=-1)
# loss weights has no gradients
loss_dict['rcnn_cls_loss'] = rcnn_cls_loss
loss_dict['rcnn_bbox_loss'] = rcnn_bbox_loss
# add rcnn_cls_targets to get the statics of rpn
# loss_dict['rcnn_cls_targets'] = rcnn_cls_targets
rcnn_cls_probs = prediction_dict['rcnn_cls_probs']
# fake_match = self.target_assigner.analyzer.match
fake_match = prediction_dict['fake_match']
num_gt = feed_dict['gt_labels'].numel()
self.target_assigner.analyzer.analyze_ap(fake_match,
rcnn_cls_probs[:, 1],
num_gt,
thresh=0.5)
# prediction_dict['rcnn_reg_weights'] = rcnn_reg_weights
return loss_dict
def loss_new(self, prediction_dict, feed_dict):
"""
assign proposals label and subsample from them
Then calculate loss
"""
loss_dict = {}
# submodule loss
loss_dict.update(self.rpn_model.loss(prediction_dict, feed_dict))
rois_batch = prediction_dict['rois_batch']
gt_boxes = feed_dict['gt_boxes']
gt_labels = feed_dict['gt_labels']
##########################
# assigner
##########################
# import ipdb
# ipdb.set_trace()
# import ipdb
# ipdb.set_trace()
rcnn_cls_targets, rcnn_reg_targets, rcnn_cls_weights, rcnn_reg_weights = self.target_assigner.assign(
rois_batch[:, :, 1:], gt_boxes, gt_labels)
##########################
# subsampler
##########################
# cls_criterion = None
# pos_indicator = rcnn_reg_weights > 0
indicator = rcnn_cls_weights > 0
pos_indicator = indicator
# indicator = None
rcnn_cls_scores = prediction_dict['rcnn_cls_scores']
rcnn_cls_loss = self.rcnn_cls_loss(rcnn_cls_scores,
rcnn_cls_targets[0])
# bounding box regression L1 loss
rcnn_bbox_preds = prediction_dict['rcnn_bbox_preds']
rcnn_bbox_loss = self.rcnn_bbox_loss(rcnn_bbox_preds,
rcnn_reg_targets[0]).sum(dim=-1)
cls_criterion = rcnn_cls_loss * rcnn_cls_weights + rcnn_bbox_loss * rcnn_reg_weights
# subsample from all
# shape (N,M)
# import ipdb
# ipdb.set_trace()
batch_sampled_mask = self.sampler.subsample_batch(
self.rcnn_batch_size,
pos_indicator,
indicator=indicator,
criterion=cls_criterion)
rcnn_cls_weights = rcnn_cls_weights * batch_sampled_mask.type_as(
rcnn_cls_weights)
num_cls_coeff = (rcnn_cls_weights > 0).sum(dim=-1)
# check
assert num_cls_coeff, 'bug happens'
rcnn_cls_weights = rcnn_cls_weights / num_cls_coeff.float()
# import ipdb
# ipdb.set_trace()
# rcnn_cls_targets *= batch_sampled_mask.type_as(rcnn_cls_targets)
# rcnn_reg_targets *= batch_sampled_mask.type_as(rcnn_reg_targets)
# targets and weights
# rcnn_cls_weights = prediction_dict['rcnn_cls_weights']
# rcnn_reg_weights = prediction_dict['rcnn_reg_weights']
# rcnn_cls_targets = prediction_dict['rcnn_cls_targets']
# rcnn_reg_targets = prediction_dict['rcnn_reg_targets']
# classification loss
# import ipdb
# ipdb.set_trace()
rcnn_cls_loss *= rcnn_cls_weights[0]
rcnn_cls_loss = rcnn_cls_loss.sum(dim=-1)
# bbox reg
rcnn_reg_weights *= batch_sampled_mask.type_as(rcnn_reg_weights)
num_reg_coeff = (rcnn_reg_weights > 0).sum(dim=-1)
assert num_reg_coeff, 'bug happens'
rcnn_reg_weights = rcnn_reg_weights / num_reg_coeff.float()
rcnn_bbox_loss *= rcnn_reg_weights[0]
# rcnn_bbox_loss *= rcnn_reg_weights
rcnn_bbox_loss = rcnn_bbox_loss.sum(dim=-1)
# # loss weights has no gradients
loss_dict['rcnn_cls_loss'] = rcnn_cls_loss
# loss_dict['rcnn_bbox_loss'] = rcnn_bbox_loss
# add rcnn_cls_targets to get the statics of rpn
# loss_dict['rcnn_cls_targets'] = rcnn_cls_targets
# analysis precision
rcnn_cls_probs = prediction_dict['rcnn_cls_probs']
fake_match = self.target_assigner.analyzer.match
num_gt = feed_dict['gt_labels'].numel()
self.target_assigner.analyzer.analyze_ap(fake_match,
rcnn_cls_probs[:, 1],
num_gt,
thresh=0.5)
prediction_dict['rcnn_reg_weights'] = rcnn_reg_weights
return loss_dict
class Mono3DSimplerFasterRCNN(Model):
def forward(self, feed_dict):
# import ipdb
# ipdb.set_trace()
prediction_dict = {}
# base model
base_feat = self.feature_extractor.first_stage_feature(
feed_dict['img'])
feed_dict.update({'base_feat': base_feat})
# rpn model
prediction_dict.update(self.rpn_model.forward(feed_dict))
if self.training:
self.pre_subsample(prediction_dict, feed_dict)
rois_batch = prediction_dict['rois_batch']
pooled_feat = self.rcnn_pooling(base_feat, rois_batch.view(-1, 5))
mask_pooled_feat = self.mask_rcnn_pooling(base_feat,
rois_batch.view(-1, 5))
pooled_feat = self.feature_extractor.second_stage_feature(pooled_feat)
# common_pooled_feat = pooled_feat
rcnn_cls_scores_map = self.rcnn_cls_pred(pooled_feat)
rcnn_cls_scores = rcnn_cls_scores_map.mean(3).mean(2)
saliency_map = F.softmax(rcnn_cls_scores_map, dim=1)
rcnn_cls_probs = F.softmax(rcnn_cls_scores, dim=1)
pooled_feat = pooled_feat * saliency_map[:, 1:, :, :]
reduced_pooled_feat = pooled_feat.mean(3).mean(2)
rcnn_bbox_preds = self.rcnn_bbox_pred(reduced_pooled_feat)
# rcnn_cls_scores = self.rcnn_cls_pred(pooled_feat)
rcnn_cls_probs = F.softmax(rcnn_cls_scores, dim=1)
prediction_dict['rcnn_cls_probs'] = rcnn_cls_probs
prediction_dict['rcnn_bbox_preds'] = rcnn_bbox_preds
prediction_dict['rcnn_cls_scores'] = rcnn_cls_scores
# used for track
proposals_order = prediction_dict['proposals_order']
prediction_dict['second_rpn_anchors'] = prediction_dict['anchors'][
proposals_order]
###################################
# 3d training
###################################
keypoint_heatmap = self.keypoint_predictor(mask_pooled_feat)
keypoint_scores = keypoint_heatmap.view(-1, 56 * 56)
keypoint_probs = F.softmax(keypoint_scores, dim=-1)
prediction_dict['keypoint_probs'] = keypoint_probs
prediction_dict['keypoint_scores'] = keypoint_scores
# import ipdb
# ipdb.set_trace()
rcnn_3d = self.rcnn_3d_pred(reduced_pooled_feat)
prediction_dict['rcnn_3d'] = rcnn_3d
if not self.training:
# import ipdb
# ipdb.set_trace()
# _, keypoint_peak_pos = keypoint_probs.max(dim=-1)
keypoints = self.keypoint_coder.decode_keypoint_heatmap(
rois_batch[0, :, 1:], keypoint_probs.view(-1, 4, 56 * 56))
prediction_dict['keypoints'] = keypoints
return prediction_dict
def init_weights(self):
# submodule init weights
self.feature_extractor.init_weights()
self.rpn_model.init_weights()
Filler.normal_init(self.rcnn_cls_pred, 0, 0.01, self.truncated)
Filler.normal_init(self.rcnn_bbox_pred, 0, 0.001, self.truncated)
def modify_feature_extractor(self):
from torchvision.models.resnet import Bottleneck
layer4 = self._make_layer(Bottleneck, 512, 3, stride=1)
self.feature_extractor.second_stage_feature = layer4
def init_modules(self):
self.feature_extractor = ResNetFeatureExtractor(
self.feature_extractor_config)
self.modify_feature_extractor()
self.rpn_model = RPNModel(self.rpn_config)
if self.pooling_mode == 'align':
self.rcnn_pooling = RoIAlignAvg(self.pooling_size,
self.pooling_size, 1.0 / 16.0)
elif self.pooling_mode == 'ps':
self.rcnn_pooling = PSRoIPool(7, 7, 1.0 / 16, 7, self.n_classes)
elif self.pooling_mode == 'psalign':
raise NotImplementedError('have not implemented yet!')
elif self.pooling_mode == 'deformable_psalign':
raise NotImplementedError('have not implemented yet!')
self.mask_rcnn_pooling = RoIAlignAvg(14, 14, 1.0 / 16.0)
# self.rcnn_cls_pred = nn.Linear(2048, self.n_classes)
self.rcnn_cls_pred = nn.Conv2d(2048, self.n_classes, 3, 1, 1)
if self.reduce:
in_channels = 2048
else:
in_channels = 2048 * 4 * 4
if self.class_agnostic:
self.rcnn_bbox_pred = nn.Linear(in_channels, 4)
else:
self.rcnn_bbox_pred = nn.Linear(in_channels, 4 * self.n_classes)
# loss module
if self.use_focal_loss:
self.rcnn_cls_loss = FocalLoss(2)
else:
self.rcnn_cls_loss = functools.partial(F.cross_entropy,
reduce=False)
self.rcnn_kp_loss = functools.partial(F.cross_entropy,
reduce=False,
ignore_index=-1)
self.rcnn_bbox_loss = nn.modules.SmoothL1Loss(reduce=False)
# some 3d statistic
# some 2d points projected from 3d
self.rcnn_3d_pred = nn.Linear(in_channels, 3)
# self.rcnn_3d_loss = MultiBinLoss(num_bins=self.num_bins)
# self.rcnn_3d_loss = MultiBinRegLoss(num_bins=self.num_bins)
self.rcnn_3d_loss = OrientationLoss(split_loss=True)
self.keypoint_predictor = KeyPointPredictor2(1024)
def _make_layer(self, block, planes, blocks, stride=1):
inplanes = 1024
downsample = None
if stride != 1 or inplanes != planes * block.expansion:
downsample = nn.Sequential(
nn.Conv2d(inplanes,
planes * block.expansion,
kernel_size=1,
stride=stride,
bias=False),
nn.BatchNorm2d(planes * block.expansion),
)
layers = []
layers.append(block(inplanes, planes, stride, downsample))
inplanes = planes * block.expansion
for i in range(1, blocks):
layers.append(block(inplanes, planes))
return nn.Sequential(*layers)
def init_param(self, model_config):
classes = model_config['classes']
self.classes = classes
self.n_classes = len(classes)
self.class_agnostic = model_config['class_agnostic']
self.pooling_size = model_config['pooling_size']
self.pooling_mode = model_config['pooling_mode']
self.crop_resize_with_max_pool = model_config[
'crop_resize_with_max_pool']
self.truncated = model_config['truncated']
self.use_focal_loss = model_config['use_focal_loss']
self.subsample_twice = model_config['subsample_twice']
self.rcnn_batch_size = model_config['rcnn_batch_size']
# some submodule config
self.feature_extractor_config = model_config[
'feature_extractor_config']
self.rpn_config = model_config['rpn_config']
# sampler
self.sampler = BalancedSampler(model_config['sampler_config'])
# self.reduce = model_config.get('reduce')
self.reduce = True
self.visualizer = FeatVisualizer()
self.num_bins = 4
# assigner
self.target_assigner = TargetAssigner(
model_config['target_assigner_config'])
self.keypoint_coder = self.target_assigner.keypoint_coder
self.profiler = Profiler()
def pre_subsample(self, prediction_dict, feed_dict):
rois_batch = prediction_dict['rois_batch']
gt_boxes = feed_dict['gt_boxes']
gt_labels = feed_dict['gt_labels']
# shape(N,7)
gt_boxes_3d = feed_dict['gt_boxes_3d']
keypoint_gt = feed_dict['keypoint_gt']
# import ipdb
# ipdb.set_trace()
gt_boxes_3d = torch.cat([gt_boxes_3d[:, :, :3], keypoint_gt], dim=-1)
##########################
# assigner
##########################
rcnn_cls_targets, rcnn_reg_targets,\
rcnn_cls_weights, rcnn_reg_weights,\
rcnn_reg_targets_3d, rcnn_reg_weights_3d = self.target_assigner.assign(
rois_batch[:, :, 1:], gt_boxes, gt_boxes_3d, gt_labels)
##########################
# subsampler
##########################
cls_criterion = None
pos_indicator = rcnn_reg_weights > 0
indicator = rcnn_cls_weights > 0
# subsample from all
# shape (N,M)
batch_sampled_mask = self.sampler.subsample_batch(
self.rcnn_batch_size,
pos_indicator,
indicator=indicator,
criterion=cls_criterion)
rcnn_cls_weights = rcnn_cls_weights[batch_sampled_mask]
rcnn_reg_weights = rcnn_reg_weights[batch_sampled_mask]
rcnn_reg_weights_3d = rcnn_reg_weights_3d[batch_sampled_mask]
num_cls_coeff = (rcnn_cls_weights > 0).sum(dim=-1)
num_reg_coeff = (rcnn_reg_weights > 0).sum(dim=-1)
# check
assert num_cls_coeff, 'bug happens'
assert num_reg_coeff, 'bug happens'
prediction_dict[
'rcnn_cls_weights'] = rcnn_cls_weights / num_cls_coeff.float()
prediction_dict[
'rcnn_reg_weights'] = rcnn_reg_weights / num_reg_coeff.float()
prediction_dict[
'rcnn_reg_weights_3d'] = rcnn_reg_weights_3d / num_reg_coeff.float(
)
prediction_dict['rcnn_cls_targets'] = rcnn_cls_targets[
batch_sampled_mask]
prediction_dict['rcnn_reg_targets'] = rcnn_reg_targets[
batch_sampled_mask]
prediction_dict['rcnn_reg_targets_3d'] = rcnn_reg_targets_3d[
batch_sampled_mask]
# update rois_batch
prediction_dict['rois_batch'] = rois_batch[batch_sampled_mask].view(
rois_batch.shape[0], -1, 5)
def loss(self, prediction_dict, feed_dict):
"""
assign proposals label and subsample from them
Then calculate loss
"""
loss_dict = {}
# submodule loss
loss_dict.update(self.rpn_model.loss(prediction_dict, feed_dict))
# targets and weights
rcnn_cls_weights = prediction_dict['rcnn_cls_weights']
rcnn_reg_weights = prediction_dict['rcnn_reg_weights']
rcnn_cls_targets = prediction_dict['rcnn_cls_targets']
rcnn_reg_targets = prediction_dict['rcnn_reg_targets']
# classification loss
rcnn_cls_scores = prediction_dict['rcnn_cls_scores']
rcnn_cls_loss = self.rcnn_cls_loss(rcnn_cls_scores, rcnn_cls_targets)
rcnn_cls_loss *= rcnn_cls_weights
rcnn_cls_loss = rcnn_cls_loss.sum(dim=-1)
# bounding box regression L1 loss
rcnn_bbox_preds = prediction_dict['rcnn_bbox_preds']
rcnn_bbox_loss = self.rcnn_bbox_loss(rcnn_bbox_preds,
rcnn_reg_targets).sum(dim=-1)
rcnn_bbox_loss *= rcnn_reg_weights
rcnn_bbox_loss = rcnn_bbox_loss.sum(dim=-1)
loss_dict['rcnn_cls_loss'] = rcnn_cls_loss
loss_dict['rcnn_bbox_loss'] = rcnn_bbox_loss
# keypoint heatmap loss
# keypoint_gt = feed_dict['keypoint_gt']
# import ipdb
# ipdb.set_trace()
rcnn_reg_targets_3d = prediction_dict['rcnn_reg_targets_3d']
rcnn_reg_weights_3d = prediction_dict['rcnn_reg_weights_3d']
keypoint_scores = prediction_dict['keypoint_scores']
keypoint_gt = rcnn_reg_targets_3d[:, 3:].contiguous().view(-1, 2)
keypoint_weights = keypoint_gt[:, 1]
keypoint_pos = keypoint_gt[:, 0]
keypoint_pos[keypoint_weights == 0] = -1
keypoint_loss = self.rcnn_kp_loss(keypoint_scores, keypoint_pos.long())
keypoint_loss = keypoint_loss.view(
-1, 4) * rcnn_reg_weights_3d.unsqueeze(-1)
# keypoint_loss = keypoint_loss * keypoint_weights
loss_dict['keypoint_loss'] = keypoint_loss.sum(dim=-1).sum(dim=-1)
# dims loss
rcnn_3d = prediction_dict['rcnn_3d']
rcnn_3d_loss = self.rcnn_bbox_loss(rcnn_3d, rcnn_reg_targets_3d[:, :3])
rcnn_3d_loss = rcnn_3d_loss * rcnn_reg_weights_3d.sum(dim=-1)
loss_dict['rcnn_3d_loss'] = rcnn_3d_loss.sum(dim=-1).sum(dim=-1)
return loss_dict
class LEDFasterRCNN(Model):
def forward(self, feed_dict):
# import ipdb
# ipdb.set_trace()
# feed_dict['input_size'] = torch.stack(img_shapes, dim=0)
feed_dict['input_size'] = feed_dict['im_info']
prediction_dict = {}
# base model
base_feat = self.feature_extractor.first_stage_feature(
feed_dict['img'])
feed_dict.update({'base_feat': base_feat})
# batch_size = base_feat.shape[0]
# rpn model
prediction_dict.update(self.rpn_model.forward(feed_dict))
# proposals = prediction_dict['proposals_batch']
# shape(N,num_proposals,5)
# pre subsample for reduce consume of memory
if self.training:
self.pre_subsample(prediction_dict, feed_dict)
rois_batch = prediction_dict['rois_batch']
# note here base_feat (N,C,H,W),rois_batch (N,num_proposals,5)
pooled_feat = self.rcnn_pooling(base_feat, rois_batch.view(-1, 5))
# shape(N,C,1,1)
pooled_feat = self.feature_extractor.second_stage_feature(pooled_feat)
# shape(N,C)
if self.reduce:
pooled_feat = pooled_feat.mean(3).mean(2)
else:
pooled_feat = pooled_feat.view(self.rcnn_batch_size, -1)
rcnn_bbox_preds = self.rcnn_bbox_pred(pooled_feat)
rcnn_cls_scores = self.rcnn_cls_pred(pooled_feat)
rcnn_cls_probs = F.softmax(rcnn_cls_scores, dim=1)
# import ipdb
# ipdb.set_trace()
iou, iou_scores, iou_reg = self.iou_pred(pooled_feat)
iog, iog_scores, iog_reg = self.iog_pred(pooled_feat)
iod, iod_scores, iod_reg = self.iod_pred(pooled_feat)
iou = self.iox_clip(iou)
iog = self.iox_clip(iog)
iod = self.iox_clip(iod)
# import ipdb
# ipdb.set_trace()
iou_indirect = self.calculate_iou(iog, iod)
iou_final = (1 - self.alpha) * iou_indirect + self.alpha * iou
if self.use_cls_pred:
rcnn_fg_probs_final = rcnn_cls_probs[:, 1] * torch.exp(-torch.pow(
(1 - iou_final), 2) / self.theta)
else:
rcnn_fg_probs_final = iou_final
prediction_dict['rcnn_cls_probs'] = torch.stack(
[rcnn_fg_probs_final, rcnn_fg_probs_final], dim=-1)
prediction_dict['rcnn_bbox_preds'] = rcnn_bbox_preds
prediction_dict['rcnn_cls_scores'] = rcnn_cls_scores
# prediction_dict['rcnn_iou_final'] = iou_final
prediction_dict['rcnn_iou_reg'] = iou_reg
prediction_dict['rcnn_iou_scores'] = iou_scores
prediction_dict['rcnn_iod_reg'] = iod_reg
prediction_dict['rcnn_iod_scores'] = iod_scores
prediction_dict['rcnn_iog_reg'] = iog_reg
prediction_dict['rcnn_iog_scores'] = iog_scores
# used for track
proposals_order = prediction_dict['proposals_order']
prediction_dict['second_rpn_anchors'] = prediction_dict['anchors'][0][
proposals_order]
return prediction_dict
def iox_clip(self, iox):
iox = iox.clone()
iox[iox < 0] = 0
iox[iox > 1] = 1
return iox
def init_weights(self):
# submodule init weights
self.feature_extractor.init_weights()
self.rpn_model.init_weights()
Filler.normal_init(self.rcnn_cls_pred, 0, 0.01, self.truncated)
Filler.normal_init(self.rcnn_bbox_pred, 0, 0.001, self.truncated)
Filler.normal_init(self.rcnn_coarse_map_conv_iod, 0, 0.001,
self.truncated)
Filler.normal_init(self.rcnn_fine_map_conv_iod, 0, 0.001,
self.truncated)
Filler.normal_init(self.rcnn_coarse_map_conv_iou, 0, 0.001,
self.truncated)
Filler.normal_init(self.rcnn_fine_map_conv_iou, 0, 0.001,
self.truncated)
Filler.normal_init(self.rcnn_fine_map_conv_iog, 0, 0.001,
self.truncated)
Filler.normal_init(self.rcnn_coarse_map_conv_iog, 0, 0.001,
self.truncated)
# freeze all first
self.freeze_modules()
# unfreeze some modules
self.rpn_model.unfreeze_modules()
self.unfreeze_modules()
def unfreeze_modules(self):
unfreeze_modules = [
self.rcnn_coarse_map_conv_iod.bias,
self.rcnn_fine_map_conv_iod.bias,
self.rcnn_coarse_map_conv_iog.bias,
self.rcnn_fine_map_conv_iog.bias,
self.rcnn_coarse_map_conv_iou.bias,
self.rcnn_fine_map_conv_iou.bias,
self.rcnn_coarse_map_conv_iod.weight,
self.rcnn_fine_map_conv_iod.weight,
self.rcnn_coarse_map_conv_iog.weight,
self.rcnn_fine_map_conv_iog.weight,
self.rcnn_coarse_map_conv_iou.weight,
self.rcnn_fine_map_conv_iou.weight
]
for module in unfreeze_modules:
module.requires_grad = True
def init_modules(self):
self.feature_extractor = ResNetFeatureExtractor(
self.feature_extractor_config)
self.rpn_model = LEDRPNModel(self.rpn_config)
if self.pooling_mode == 'align':
self.rcnn_pooling = RoIAlignAvg(self.pooling_size,
self.pooling_size, 1.0 / 16.0)
elif self.pooling_mode == 'ps':
self.rcnn_pooling = PSRoIPool(7, 7, 1.0 / 16, 7, self.n_classes)
elif self.pooling_mode == 'psalign':
raise NotImplementedError('have not implemented yet!')
elif self.pooling_mode == 'deformable_psalign':
raise NotImplementedError('have not implemented yet!')
self.rcnn_cls_pred = nn.Linear(2048, self.n_classes)
if self.reduce:
in_channels = 2048
else:
in_channels = 2048 * 4 * 4
if self.class_agnostic:
self.rcnn_bbox_pred = nn.Linear(in_channels, 4)
else:
self.rcnn_bbox_pred = nn.Linear(in_channels, 4 * self.n_classes)
self.rcnn_bbox_loss = nn.modules.SmoothL1Loss(reduce=False)
# pred for iox
self.rcnn_coarse_map_conv_iou = nn.Linear(2048, 4)
self.rcnn_fine_map_conv_iou = nn.Linear(2048, 4)
self.rcnn_coarse_map_conv_iog = nn.Linear(2048, 4)
self.rcnn_fine_map_conv_iog = nn.Linear(2048, 4)
self.rcnn_coarse_map_conv_iod = nn.Linear(2048, 4)
self.rcnn_fine_map_conv_iod = nn.Linear(2048, 4)
# loss for iox
if self.use_sharpL2:
self.reg_loss = SharpL2Loss()
else:
self.reg_loss = nn.MSELoss(reduce=False)
self.cls_loss = nn.CrossEntropyLoss(reduce=False)
# cls loss
if self.use_focal_loss:
self.rcnn_cls_loss = FocalLoss(2)
else:
self.rcnn_cls_loss = functools.partial(F.cross_entropy,
reduce=False)
def init_param(self, model_config):
classes = model_config['classes']
self.classes = classes
self.n_classes = len(classes)
self.class_agnostic = model_config['class_agnostic']
self.pooling_size = model_config['pooling_size']
self.pooling_mode = model_config['pooling_mode']
self.crop_resize_with_max_pool = model_config[
'crop_resize_with_max_pool']
self.truncated = model_config['truncated']
self.rpn_config = model_config['rpn_config']
self.theta = 1.0
self.use_focal_loss = model_config['use_focal_loss']
self.subsample_twice = model_config['subsample_twice']
self.rcnn_batch_size = model_config['rcnn_batch_size']
self.use_sigmoid = model_config.get('use_sigmoid')
self.use_sharpL2 = model_config['use_sharpL2']
self.use_cls_pred = model_config['use_cls_pred']
# some submodule config
self.feature_extractor_config = model_config[
'feature_extractor_config']
# assigner
self.target_assigner = LEDTargetAssigner(
model_config['target_assigner_config'])
# sampler
self.sampler = BalancedSampler(model_config['sampler_config'])
self.reduce = True
self.alpha = 0.6
# self.iou_anchors = [0.05, 0.25, 0.55, 0.85]
# self.iou_lengths = [0.05, 0.15, 0.15, 0.15]
# self.iou_intervals = [[0, 0.1], [0.1, 0.4], [0.4, 0.7], [0.7, 1.0]]
self.iox_bbox_coder = DiscreteBBoxCoder(
model_config['iox_coder_config'])
def iou_pred(self, rcnn_conv):
return self.iox_pred(rcnn_conv, self.rcnn_coarse_map_conv_iou,
self.rcnn_fine_map_conv_iou)
def iog_pred(self, rcnn_conv):
return self.iox_pred(rcnn_conv, self.rcnn_coarse_map_conv_iog,
self.rcnn_fine_map_conv_iog)
def iod_pred(self, rcnn_conv):
return self.iox_pred(rcnn_conv, self.rcnn_coarse_map_conv_iod,
self.rcnn_fine_map_conv_iod)
def iox_pred(self, rcnn_conv, rcnn_coarse_map_conv, rcnn_fine_map_conv):
batch_size = rcnn_conv.shape[0]
coarse_map = rcnn_coarse_map_conv(rcnn_conv)
fine_map = rcnn_fine_map_conv(rcnn_conv)
coarse_map_reshape = coarse_map.view(batch_size, 4)
iou_level_probs = F.softmax(coarse_map_reshape, dim=1)
iou_level_probs = iou_level_probs.view_as(coarse_map)
if self.use_sigmoid:
# normalize it
iou_reg = 2 * F.sigmoid(fine_map) - 1
else:
iou_reg = fine_map
iou_cls = iou_level_probs
decoded_iou = self.iox_bbox_coder.decode_batch(iou_cls, iou_reg)
# used for cls and reg loss
iou_cls_scores = coarse_map
return decoded_iou, iou_cls_scores, iou_reg
def calculate_iou(self, iog, iod):
mask = ~(iod == 0)
iou_indirect = torch.zeros_like(iog)
iod = iod[mask]
iog = iog[mask]
iou_indirect[mask] = (iod * iog) / (iod + iog - iod * iog)
return iou_indirect
def pre_subsample(self, prediction_dict, feed_dict):
rois_batch = prediction_dict['rois_batch']
gt_boxes = feed_dict['gt_boxes']
gt_labels = feed_dict['gt_labels']
##########################
# assigner
##########################
# import ipdb
# ipdb.set_trace()
rcnn_cls_targets, rcnn_reg_targets, rcnn_cls_weights, rcnn_reg_weights = self.target_assigner.assign(
rois_batch[:, :, 1:], gt_boxes, gt_labels)
##########################
# subsampler
##########################
cls_criterion = None
pos_indicator = rcnn_reg_weights > 0
indicator = rcnn_cls_weights > 0
# subsample from all
# shape (N,M)
batch_sampled_mask = self.sampler.subsample_batch(
self.rcnn_batch_size,
pos_indicator,
indicator=indicator,
criterion=cls_criterion)
rcnn_cls_weights = rcnn_cls_weights[batch_sampled_mask]
rcnn_reg_weights = rcnn_reg_weights[batch_sampled_mask]
num_cls_coeff = (rcnn_cls_weights > 0).sum(dim=-1)
num_reg_coeff = (rcnn_reg_weights > 0).sum(dim=-1)
# check
assert num_cls_coeff, 'bug happens'
assert num_reg_coeff, 'bug happens'
prediction_dict[
'rcnn_cls_weights'] = rcnn_cls_weights / num_cls_coeff.float()
prediction_dict[
'rcnn_reg_weights'] = rcnn_reg_weights / num_reg_coeff.float()
prediction_dict['rcnn_cls_targets'] = rcnn_cls_targets[
batch_sampled_mask]
prediction_dict['rcnn_reg_targets'] = rcnn_reg_targets[
batch_sampled_mask]
# update rois_batch
prediction_dict['rois_batch'] = rois_batch[batch_sampled_mask].view(
rois_batch.shape[0], -1, 5)
if not self.training:
# used for track
proposals_order = prediction_dict['proposals_order']
prediction_dict['proposals_order'] = proposals_order[
batch_sampled_mask]
# iou targets
iou_targets = self.target_assigner.matcher.assigned_overlaps_batch
iou_cls_targets = self.iox_bbox_coder.encode_cls(iou_targets)
iou_reg_targets = self.iox_bbox_coder.encode_reg(iou_targets)
prediction_dict['rcnn_iou_cls_targets'] = iou_cls_targets[
batch_sampled_mask]
prediction_dict['rcnn_iou_reg_targets'] = iou_reg_targets[
batch_sampled_mask]
# iod targets
iod_targets = self.target_assigner.matcher.assigned_iod_batch
iod_cls_targets = self.iox_bbox_coder.encode_cls(iod_targets)
iod_reg_targets = self.iox_bbox_coder.encode_reg(iod_targets)
prediction_dict['rcnn_iod_cls_targets'] = iod_cls_targets[
batch_sampled_mask]
prediction_dict['rcnn_iod_reg_targets'] = iod_reg_targets[
batch_sampled_mask]
# iog targets
iog_targets = self.target_assigner.matcher.assigned_iog_batch
iog_cls_targets = self.iox_bbox_coder.encode_cls(iog_targets)
iog_reg_targets = self.iox_bbox_coder.encode_reg(iog_targets)
prediction_dict['rcnn_iog_cls_targets'] = iog_cls_targets[
batch_sampled_mask]
prediction_dict['rcnn_iog_reg_targets'] = iog_reg_targets[
batch_sampled_mask]
def iox_loss(self, iou_scores, iou_cls_targets, iou_reg, iou_reg_targets):
iou_cls_loss = self.cls_loss(iou_scores, iou_cls_targets)
iou_reg_loss = self.reg_loss(iou_reg, iou_reg_targets).sum(dim=-1)
return iou_cls_loss.mean(), iou_reg_loss.mean()
def iou_loss(self, prediction_dict):
return self.iox_loss(prediction_dict['rcnn_iou_scores'],
prediction_dict['rcnn_iou_cls_targets'],
prediction_dict['rcnn_iou_reg'],
prediction_dict['rcnn_iou_reg_targets'])
def iog_loss(self, prediction_dict):
return self.iox_loss(prediction_dict['rcnn_iog_scores'],
prediction_dict['rcnn_iog_cls_targets'],
prediction_dict['rcnn_iog_reg'],
prediction_dict['rcnn_iog_reg_targets'])
def iod_loss(self, prediction_dict):
return self.iox_loss(prediction_dict['rcnn_iod_scores'],
prediction_dict['rcnn_iod_cls_targets'],
prediction_dict['rcnn_iod_reg'],
prediction_dict['rcnn_iod_reg_targets'])
def loss(self, prediction_dict, feed_dict):
"""
assign proposals label and subsample from them
Then calculate loss
"""
loss_dict = {}
# submodule loss
loss_dict.update(self.rpn_model.loss(prediction_dict, feed_dict))
# iou loss
iou_cls_loss, iou_reg_loss = self.iou_loss(prediction_dict)
# iog loss
iog_cls_loss, iog_reg_loss = self.iog_loss(prediction_dict)
# iod loss
iod_cls_loss, iod_reg_loss = self.iod_loss(prediction_dict)
# total_loss = [
# iou_cls_loss, iou_reg_loss, iog_cls_loss, iog_reg_loss,
# iod_reg_loss, iod_cls_loss
# ]
# classification loss
if self.use_cls_pred:
rcnn_cls_weights = prediction_dict['rcnn_cls_weights']
rcnn_cls_targets = prediction_dict['rcnn_cls_targets']
rcnn_cls_scores = prediction_dict['rcnn_cls_scores']
rcnn_cls_loss = self.rcnn_cls_loss(rcnn_cls_scores,
rcnn_cls_targets)
rcnn_cls_loss *= rcnn_cls_weights
rcnn_cls_loss = rcnn_cls_loss.sum(dim=-1)
loss_dict['rcnn/cls_loss'] = rcnn_cls_loss
loss_dict['rcnn/iou_cls_loss'] = iou_cls_loss
loss_dict['rcnn/iou_reg_loss'] = iou_reg_loss
loss_dict['rcnn/iog_cls_loss'] = iog_cls_loss
loss_dict['rcnn/iog_reg_loss'] = iog_reg_loss
loss_dict['rcnn/iod_reg_loss'] = iod_reg_loss
loss_dict['rcnn/iod_cls_loss'] = iod_cls_loss
# iox_loss = 0
# for loss in total_loss:
# if torch.isnan(loss).byte().any():
# import ipdb
# ipdb.set_trace()
# iox_loss += loss
# bbox regression loss
rcnn_reg_weights = prediction_dict['rcnn_reg_weights']
rcnn_reg_targets = prediction_dict['rcnn_reg_targets']
rcnn_bbox_preds = prediction_dict['rcnn_bbox_preds']
rcnn_bbox_loss = self.rcnn_bbox_loss(rcnn_bbox_preds,
rcnn_reg_targets).sum(dim=-1)
rcnn_bbox_loss *= rcnn_reg_weights
rcnn_bbox_loss = rcnn_bbox_loss.sum(dim=-1)
# loss weights has no gradients
# loss_dict['rcnn_cls_loss'] = iox_loss
loss_dict['rcnn/bbox_loss'] = rcnn_bbox_loss
# add rcnn_cls_targets to get the statics of rpn
# loss_dict['rcnn_reg_targets'] = rcnn_reg_weights
return loss_dict
class Mono3DAngleNewFasterRCNN(Model):
def forward(self, feed_dict):
# import ipdb
# ipdb.set_trace()
prediction_dict = {}
# base model
base_feat = self.feature_extractor.first_stage_feature(
feed_dict['img'])
feed_dict.update({'base_feat': base_feat})
# rpn model
prediction_dict.update(self.rpn_model.forward(feed_dict))
# proposals = prediction_dict['proposals_batch']
# shape(N,num_proposals,5)
# pre subsample for reduce consume of memory
if self.training:
self.pre_subsample(prediction_dict, feed_dict)
rois_batch = prediction_dict['rois_batch']
# note here base_feat (N,C,H,W),rois_batch (N,num_proposals,5)
pooled_feat = self.rcnn_pooling(base_feat, rois_batch.view(-1, 5))
###################################
# 3d training
###################################
mono_3d_pooled_feat = self.feature_extractor.third_stage_feature(
pooled_feat.detach())
mono_3d_pooled_feat = mono_3d_pooled_feat.mean(3).mean(2)
# rcnn_3d = self.rcnn_3d_preds_new(mono_3d_pooled_feat)
# prediction_dict['rcnn_3d'] = rcnn_3d
# shape(N,C,1,1)
pooled_feat = self.feature_extractor.second_stage_feature(pooled_feat)
rcnn_cls_scores_map = self.rcnn_cls_pred(pooled_feat)
rcnn_cls_scores = rcnn_cls_scores_map.mean(3).mean(2)
saliency_map = F.softmax(rcnn_cls_scores_map, dim=1)
rcnn_cls_probs = F.softmax(rcnn_cls_scores, dim=1)
pooled_feat = pooled_feat * saliency_map[:, 1:, :, :]
# shape(N,C)
if self.reduce:
pooled_feat = pooled_feat.mean(3).mean(2)
else:
pooled_feat = pooled_feat.view(self.rcnn_batch_size, -1)
rcnn_bbox_preds = self.rcnn_bbox_pred(pooled_feat)
# rcnn_cls_scores = self.rcnn_cls_pred(pooled_feat)
# rcnn_cls_probs = F.softmax(rcnn_cls_scores, dim=1)
rcnn_3d_dims = self.rcnn_dims_pred(mono_3d_pooled_feat)
rcnn_3d_angles = self.rcnn_angle_pred(mono_3d_pooled_feat).view(
-1, self.num_bins, 2)
rcnn_3d_angles_cls = self.rcnn_angle_conf_pred(
mono_3d_pooled_feat).view(-1, self.num_bins, 2)
rcnn_3d_angles_cls_reg = torch.cat(
[rcnn_3d_angles_cls, rcnn_3d_angles],
dim=-1).view(-1, self.num_bins * 4)
rcnn_3d = torch.cat([rcnn_3d_dims, rcnn_3d_angles_cls_reg], dim=-1)
prediction_dict['rcnn_3d'] = rcnn_3d
prediction_dict['rcnn_cls_probs'] = rcnn_cls_probs
prediction_dict['rcnn_bbox_preds'] = rcnn_bbox_preds
prediction_dict['rcnn_cls_scores'] = rcnn_cls_scores
# used for track
proposals_order = prediction_dict['proposals_order']
prediction_dict['second_rpn_anchors'] = prediction_dict['anchors'][
proposals_order]
if not self.training:
# import ipdb
# ipdb.set_trace()
dims = rcnn_3d[:, :3]
angles = rcnn_3d[:, 3:].view(-1, self.num_bins, 4)
angles_cls = F.softmax(angles[:, :, :2], dim=-1)
_, angles_cls_argmax = torch.max(angles_cls[:, :, 1], dim=-1)
row = torch.arange(
0, angles_cls_argmax.shape[0]).type_as(angles_cls_argmax)
angles_oritations = angles[:, :, 2:][row, angles_cls_argmax]
rcnn_3d = torch.cat([dims, angles_oritations], dim=-1)
# import ipdb
# ipdb.set_trace()
rcnn_3d = self.target_assigner.bbox_coder_3d.decode_batch_angle(
rcnn_3d, self.rcnn_3d_loss.bin_centers[angles_cls_argmax])
prediction_dict['rcnn_3d'] = rcnn_3d
return prediction_dict
def pre_forward(self):
# params
if self.train_3d and self.training and not self.train_2d:
self.freeze_modules()
for parameter in self.feature_extractor.third_stage_feature.parameters(
):
parameter.requires_grad = True
# for param in self.rcnn_3d_preds_new.parameters():
# param.requires_grad = True
for param in self.rcnn_angle_conf_pred.parameters():
param.requires_grad = True
for param in self.rcnn_angle_pred.parameters():
param.requires_grad = True
for param in self.rcnn_dims_pred.parameters():
param.requires_grad = True
self.freeze_bn(self)
self.unfreeze_bn(self.feature_extractor.third_stage_feature)
def init_weights(self):
# submodule init weights
self.feature_extractor.init_weights()
self.rpn_model.init_weights()
Filler.normal_init(self.rcnn_cls_pred, 0, 0.01, self.truncated)
Filler.normal_init(self.rcnn_bbox_pred, 0, 0.001, self.truncated)
def init_modules(self):
self.feature_extractor = ResNetFeatureExtractor(
self.feature_extractor_config)
self.rpn_model = RPNModel(self.rpn_config)
if self.pooling_mode == 'align':
self.rcnn_pooling = RoIAlignAvg(self.pooling_size,
self.pooling_size, 1.0 / 16.0)
elif self.pooling_mode == 'ps':
self.rcnn_pooling = PSRoIPool(7, 7, 1.0 / 16, 7, self.n_classes)
elif self.pooling_mode == 'psalign':
raise NotImplementedError('have not implemented yet!')
elif self.pooling_mode == 'deformable_psalign':
raise NotImplementedError('have not implemented yet!')
# self.rcnn_cls_pred = nn.Linear(2048, self.n_classes)
self.rcnn_cls_pred = nn.Conv2d(2048, self.n_classes, 3, 1, 1)
if self.reduce:
in_channels = 2048
else:
in_channels = 2048 * 4 * 4
if self.class_agnostic:
self.rcnn_bbox_pred = nn.Linear(in_channels, 4)
else:
self.rcnn_bbox_pred = nn.Linear(in_channels, 4 * self.n_classes)
# loss module
if self.use_focal_loss:
self.rcnn_cls_loss = FocalLoss(2)
else:
self.rcnn_cls_loss = functools.partial(F.cross_entropy,
reduce=False)
self.rcnn_bbox_loss = nn.modules.SmoothL1Loss(reduce=False)
# some 3d statistic
# some 2d points projected from 3d
# self.rcnn_3d_preds_new = nn.Linear(in_channels, 3 + 4 * self.num_bins)
self.rcnn_3d_loss = MultiBinLoss(num_bins=self.num_bins)
# dims
self.rcnn_dims_pred = nn.Sequential(
*[nn.Linear(in_channels, 256),
nn.ReLU(),
nn.Linear(256, 3)])
# angle
self.rcnn_angle_pred = nn.Sequential(*[
nn.Linear(in_channels, 256),
nn.ReLU(),
nn.Linear(256, self.num_bins * 2)
])
# angle conf
self.rcnn_angle_conf_pred = nn.Sequential(*[
nn.Linear(in_channels, 256),
nn.ReLU(),
nn.Linear(256, self.num_bins * 2)
])
def init_param(self, model_config):
classes = model_config['classes']
self.classes = classes
self.n_classes = len(classes)
self.class_agnostic = model_config['class_agnostic']
self.pooling_size = model_config['pooling_size']
self.pooling_mode = model_config['pooling_mode']
self.crop_resize_with_max_pool = model_config[
'crop_resize_with_max_pool']
self.truncated = model_config['truncated']
self.use_focal_loss = model_config['use_focal_loss']
self.subsample_twice = model_config['subsample_twice']
self.rcnn_batch_size = model_config['rcnn_batch_size']
# some submodule config
self.feature_extractor_config = model_config[
'feature_extractor_config']
self.rpn_config = model_config['rpn_config']
# sampler
self.sampler = BalancedSampler(model_config['sampler_config'])
self.reduce = True
self.visualizer = FeatVisualizer()
self.num_bins = 2
self.train_3d = True
# self.train_2d = not self.train_3d
self.train_2d = True
# assigner
self.target_assigner = TargetAssigner(
model_config['target_assigner_config'])
def pre_subsample(self, prediction_dict, feed_dict):
rois_batch = prediction_dict['rois_batch']
gt_boxes = feed_dict['gt_boxes']
gt_labels = feed_dict['gt_labels']
# gt_boxes_3d = feed_dict['coords']
# dims_2d = feed_dict['dims_2d']
# use local angle
# oritations = feed_dict['local_angle_oritation']
local_angle = feed_dict['local_angle']
# shape(N,7)
gt_boxes_3d = feed_dict['gt_boxes_3d']
# orient
# here just concat them
# dims and their projection
gt_boxes_3d = torch.cat([gt_boxes_3d[:, :, :3], local_angle], dim=-1)
##########################
# assigner
##########################
rcnn_cls_targets, rcnn_reg_targets,\
rcnn_cls_weights, rcnn_reg_weights,\
rcnn_reg_targets_3d, rcnn_reg_weights_3d = self.target_assigner.assign(
rois_batch[:, :, 1:], gt_boxes, gt_boxes_3d, gt_labels )
##########################
# subsampler
##########################
cls_criterion = None
pos_indicator = rcnn_reg_weights > 0
indicator = rcnn_cls_weights > 0
# subsample from all
# shape (N,M)
batch_sampled_mask = self.sampler.subsample_batch(
self.rcnn_batch_size,
pos_indicator,
indicator=indicator,
criterion=cls_criterion)
rcnn_cls_weights = rcnn_cls_weights[batch_sampled_mask]
rcnn_reg_weights = rcnn_reg_weights[batch_sampled_mask]
rcnn_reg_weights_3d = rcnn_reg_weights_3d[batch_sampled_mask]
num_cls_coeff = (rcnn_cls_weights > 0).sum(dim=-1)
num_reg_coeff = (rcnn_reg_weights > 0).sum(dim=-1)
# check
assert num_cls_coeff, 'bug happens'
assert num_reg_coeff, 'bug happens'
prediction_dict[
'rcnn_cls_weights'] = rcnn_cls_weights / num_cls_coeff.float()
prediction_dict[
'rcnn_reg_weights'] = rcnn_reg_weights / num_reg_coeff.float()
prediction_dict[
'rcnn_reg_weights_3d'] = rcnn_reg_weights_3d / num_reg_coeff.float(
)
prediction_dict['rcnn_cls_targets'] = rcnn_cls_targets[
batch_sampled_mask]
prediction_dict['rcnn_reg_targets'] = rcnn_reg_targets[
batch_sampled_mask]
prediction_dict['rcnn_reg_targets_3d'] = rcnn_reg_targets_3d[
batch_sampled_mask]
# update rois_batch
prediction_dict['rois_batch'] = rois_batch[batch_sampled_mask].view(
rois_batch.shape[0], -1, 5)
def loss(self, prediction_dict, feed_dict):
"""
assign proposals label and subsample from them
Then calculate loss
"""
loss_dict = {}
if self.train_2d:
# submodule loss
loss_dict.update(self.rpn_model.loss(prediction_dict, feed_dict))
# targets and weights
rcnn_cls_weights = prediction_dict['rcnn_cls_weights']
rcnn_reg_weights = prediction_dict['rcnn_reg_weights']
rcnn_cls_targets = prediction_dict['rcnn_cls_targets']
rcnn_reg_targets = prediction_dict['rcnn_reg_targets']
# classification loss
rcnn_cls_scores = prediction_dict['rcnn_cls_scores']
rcnn_cls_loss = self.rcnn_cls_loss(rcnn_cls_scores,
rcnn_cls_targets)
rcnn_cls_loss *= rcnn_cls_weights
rcnn_cls_loss = rcnn_cls_loss.sum(dim=-1)
# bounding box regression L1 loss
rcnn_bbox_preds = prediction_dict['rcnn_bbox_preds']
rcnn_bbox_loss = self.rcnn_bbox_loss(rcnn_bbox_preds,
rcnn_reg_targets).sum(dim=-1)
rcnn_bbox_loss *= rcnn_reg_weights
rcnn_bbox_loss = rcnn_bbox_loss.sum(dim=-1)
loss_dict['rcnn_cls_loss'] = rcnn_cls_loss
loss_dict['rcnn_bbox_loss'] = rcnn_bbox_loss
######################################
# 3d loss
######################################
rcnn_reg_weights_3d = prediction_dict['rcnn_reg_weights_3d']
rcnn_reg_targets_3d = prediction_dict['rcnn_reg_targets_3d']
rcnn_3d = prediction_dict['rcnn_3d']
if self.train_3d:
# dims
rcnn_3d_loss_dims = self.rcnn_bbox_loss(
rcnn_3d[:, :3], rcnn_reg_targets_3d[:, :3]).sum(dim=-1)
# angles
rcnn_angle_loss, angle_tp_mask = self.rcnn_3d_loss(
rcnn_3d[:, 3:], rcnn_reg_targets_3d[:, 3:])
rcnn_3d_loss = rcnn_3d_loss_dims * rcnn_reg_weights_3d
rcnn_3d_loss = rcnn_3d_loss.sum(dim=-1)
rcnn_angle_loss = rcnn_angle_loss * rcnn_reg_weights_3d
rcnn_angle_loss = rcnn_angle_loss.sum(dim=-1)
loss_dict['rcnn_3d_loss'] = rcnn_3d_loss
loss_dict['rcnn_angle_loss'] = rcnn_angle_loss
# angles stats
angle_tp_mask = angle_tp_mask[rcnn_reg_weights_3d > 0]
angles_tp_num = angle_tp_mask.int().sum().item()
angles_all_num = angle_tp_mask.numel()
else:
angles_all_num = 0
angles_tp_num = 0
# store all stats in target assigner
self.target_assigner.stat.update({
'angle_num_tp': torch.tensor(0),
'angle_num_all': 1,
# stats of orient
'orient_tp_num': 0,
'orient_tp_num2': 0,
'orient_tp_num3': 0,
'orient_all_num3': 0,
# 'orient_pr': orient_pr,
'orient_all_num': 0,
'orient_tp_num4': 0,
'orient_all_num4': 0,
'cls_orient_2s_all_num': angles_all_num,
'cls_orient_2s_tp_num': angles_tp_num
# 'angles_tp_num': angles_tp_num,
# 'angles_all_num': angles_all_num
})
# import ipdb
# ipdb.set_trace()
return loss_dict
class FPNFasterRCNN(Model):
def calculate_roi_level(self, rois_batch):
h = rois_batch[:, 4] - rois_batch[:, 2] + 1
w = rois_batch[:, 3] - rois_batch[:, 1] + 1
roi_level = torch.log(torch.sqrt(w * h) / 224.0)
roi_level = torch.round(roi_level + 4)
roi_level[roi_level < 2] = 2
roi_level[roi_level > 5] = 5
roi_level[...] = 4
return roi_level
def pyramid_rcnn_pooling(self, rcnn_feat_maps, rois_batch):
pooled_feats = []
# determine which layer to get feat
roi_level = self.calculate_roi_level(rois_batch)
for idx, rcnn_feat_map in enumerate(rcnn_feat_maps):
idx += 2
mask = roi_level == idx
rois_batch_per_stage = rois_batch[mask]
if rois_batch_per_stage.shape[0] == 0:
continue
pooled_feats.append(
self.rcnn_pooling(rcnn_feat_map, rois_batch_per_stage))
return torch.cat(pooled_feats, dim=0)
def forward(self, feed_dict):
prediction_dict = {}
# base model
rpn_feat_maps, rcnn_feat_maps, = self.feature_extractor.first_stage_feature(
feed_dict['img'])
feed_dict.update({'rpn_feat_maps': rpn_feat_maps})
# batch_size = base_feat.shape[0]
# rpn model
prediction_dict.update(self.rpn_model.forward(feed_dict))
# proposals = prediction_dict['proposals_batch']
# shape(N,num_proposals,5)
# pre subsample for reduce consume of memory
if self.training:
self.pre_subsample(prediction_dict, feed_dict)
rois_batch = prediction_dict['rois_batch']
# note here base_feat (N,C,H,W),rois_batch (N,num_proposals,5)
# pooled_feat = self.rcnn_pooling(rcnn_feat_maps, rois_batch.view(-1, 5))
pooled_feat = self.pyramid_rcnn_pooling(rcnn_feat_maps,
rois_batch.view(-1, 5))
# shape(N,C,1,1)
pooled_feat = self.feature_extractor.second_stage_feature(pooled_feat)
# shape(N,C)
if self.reduce:
pooled_feat = pooled_feat.mean(3).mean(2)
else:
pooled_feat = pooled_feat.view(self.rcnn_batch_size, -1)
rcnn_bbox_preds = self.rcnn_bbox_pred(pooled_feat)
rcnn_cls_scores = self.rcnn_cls_pred(pooled_feat)
rcnn_cls_probs = F.softmax(rcnn_cls_scores, dim=1)
prediction_dict['rcnn_cls_probs'] = rcnn_cls_probs
prediction_dict['rcnn_bbox_preds'] = rcnn_bbox_preds
prediction_dict['rcnn_cls_scores'] = rcnn_cls_scores
# used for track
proposals_order = prediction_dict['proposals_order']
prediction_dict['second_rpn_anchors'] = prediction_dict['anchors'][
proposals_order]
return prediction_dict
def init_weights(self):
# submodule init weights
self.feature_extractor.init_weights()
self.rpn_model.init_weights()
Filler.normal_init(self.rcnn_cls_pred, 0, 0.01, self.truncated)
Filler.normal_init(self.rcnn_bbox_pred, 0, 0.001, self.truncated)
def init_modules(self):
self.feature_extractor = FPNFeatureExtractor(
self.feature_extractor_config)
self.rpn_model = RPNModel(self.rpn_config)
if self.pooling_mode == 'align':
self.rcnn_pooling = RoIAlignAvg(self.pooling_size,
self.pooling_size, 1.0 / 16.0)
elif self.pooling_mode == 'ps':
self.rcnn_pooling = PSRoIPool(7, 7, 1.0 / 16, 7, self.n_classes)
elif self.pooling_mode == 'psalign':
raise NotImplementedError('have not implemented yet!')
elif self.pooling_mode == 'deformable_psalign':
raise NotImplementedError('have not implemented yet!')
self.rcnn_cls_pred = nn.Linear(1024, self.n_classes)
if self.reduce:
in_channels = 1024
else:
in_channels = 2048 * 4 * 4
if self.class_agnostic:
self.rcnn_bbox_pred = nn.Linear(in_channels, 4)
else:
self.rcnn_bbox_pred = nn.Linear(in_channels, 4 * self.n_classes)
# loss module
if self.use_focal_loss:
self.rcnn_cls_loss = FocalLoss(2)
else:
self.rcnn_cls_loss = functools.partial(F.cross_entropy,
reduce=False)
self.rcnn_bbox_loss = nn.modules.SmoothL1Loss(reduce=False)
def init_param(self, model_config):
classes = model_config['classes']
self.classes = classes
self.n_classes = len(classes)
self.class_agnostic = model_config['class_agnostic']
self.pooling_size = model_config['pooling_size']
self.pooling_mode = model_config['pooling_mode']
self.crop_resize_with_max_pool = model_config[
'crop_resize_with_max_pool']
self.truncated = model_config['truncated']
self.use_focal_loss = model_config['use_focal_loss']
self.subsample_twice = model_config['subsample_twice']
self.rcnn_batch_size = model_config['rcnn_batch_size']
# some submodule config
self.feature_extractor_config = model_config[
'feature_extractor_config']
self.rpn_config = model_config['rpn_config']
# assigner
self.target_assigner = TargetAssigner(
model_config['target_assigner_config'])
# sampler
self.sampler = BalancedSampler(model_config['sampler_config'])
# self.reduce = model_config.get('reduce')
self.reduce = True
def pre_subsample(self, prediction_dict, feed_dict):
rois_batch = prediction_dict['rois_batch']
gt_boxes = feed_dict['gt_boxes']
gt_labels = feed_dict['gt_labels']
##########################
# assigner
##########################
# import ipdb
# ipdb.set_trace()
rcnn_cls_targets, rcnn_reg_targets, rcnn_cls_weights, rcnn_reg_weights = self.target_assigner.assign(
rois_batch[:, :, 1:], gt_boxes, gt_labels)
##########################
# subsampler
##########################
cls_criterion = None
pos_indicator = rcnn_reg_weights > 0
indicator = rcnn_cls_weights > 0
# subsample from all
# shape (N,M)
batch_sampled_mask = self.sampler.subsample_batch(
self.rcnn_batch_size,
pos_indicator,
indicator=indicator,
criterion=cls_criterion)
rcnn_cls_weights = rcnn_cls_weights[batch_sampled_mask]
rcnn_reg_weights = rcnn_reg_weights[batch_sampled_mask]
num_cls_coeff = (rcnn_cls_weights > 0).sum(dim=-1)
num_reg_coeff = (rcnn_reg_weights > 0).sum(dim=-1)
# check
assert num_cls_coeff, 'bug happens'
assert num_reg_coeff, 'bug happens'
prediction_dict[
'rcnn_cls_weights'] = rcnn_cls_weights / num_cls_coeff.float()
prediction_dict[
'rcnn_reg_weights'] = rcnn_reg_weights / num_reg_coeff.float()
prediction_dict['rcnn_cls_targets'] = rcnn_cls_targets[
batch_sampled_mask]
prediction_dict['rcnn_reg_targets'] = rcnn_reg_targets[
batch_sampled_mask]
# update rois_batch
prediction_dict['rois_batch'] = rois_batch[batch_sampled_mask].view(
rois_batch.shape[0], -1, 5)
if not self.training:
# used for track
proposals_order = prediction_dict['proposals_order']
prediction_dict['proposals_order'] = proposals_order[
batch_sampled_mask]
def loss(self, prediction_dict, feed_dict):
"""
assign proposals label and subsample from them
Then calculate loss
"""
loss_dict = {}
# submodule loss
loss_dict.update(self.rpn_model.loss(prediction_dict, feed_dict))
# targets and weights
rcnn_cls_weights = prediction_dict['rcnn_cls_weights']
rcnn_reg_weights = prediction_dict['rcnn_reg_weights']
rcnn_cls_targets = prediction_dict['rcnn_cls_targets']
rcnn_reg_targets = prediction_dict['rcnn_reg_targets']
# classification loss
rcnn_cls_scores = prediction_dict['rcnn_cls_scores']
rcnn_cls_loss = self.rcnn_cls_loss(rcnn_cls_scores, rcnn_cls_targets)
rcnn_cls_loss *= rcnn_cls_weights
rcnn_cls_loss = rcnn_cls_loss.sum(dim=-1)
# bounding box regression L1 loss
rcnn_bbox_preds = prediction_dict['rcnn_bbox_preds']
rcnn_bbox_loss = self.rcnn_bbox_loss(rcnn_bbox_preds,
rcnn_reg_targets).sum(dim=-1)
rcnn_bbox_loss *= rcnn_reg_weights
# rcnn_bbox_loss *= rcnn_reg_weights
rcnn_bbox_loss = rcnn_bbox_loss.sum(dim=-1)
# loss weights has no gradients
loss_dict['rcnn_cls_loss'] = rcnn_cls_loss
loss_dict['rcnn_bbox_loss'] = rcnn_bbox_loss
# add rcnn_cls_targets to get the statics of rpn
# loss_dict['rcnn_cls_targets'] = rcnn_cls_targets
return loss_dict
class SINetModel(Model):
def collect_intermedia_layers(self, img):
feat2 = self.feature_extractor.first_stage_feature[:-1](img)
feat3 = self.feature_extractor.first_stage_feature[-1](feat2)
end_points = {'feat2': feat2, 'feat3': feat3}
return feat3, end_points
def caroi_pooling(self, all_feats, rois_batch, out_channels):
pooled_feats = []
for feat in all_feats:
pooled_feats.append(self.rcnn_pooling(feat, rois_batch))
pooled_feats = torch.cat(pooled_feats, dim=1)
if pooled_feats.shape[1] != out_channels:
# add 1x1 conv
pooled_feats = self.reduce_pooling(pooled_feats)
return pooled_feats
def forward(self, feed_dict):
prediction_dict = {}
# base model
# base_feat = self.feature_extractor.first_stage_feature(
# feed_dict['img'])
base_feat, all_feats = self.collect_intermedia_layers(feed_dict['img'])
feed_dict.update({'base_feat': base_feat})
self.add_feat('base_feat', base_feat)
# rpn model
prediction_dict.update(self.rpn_model.forward(feed_dict))
# proposals = prediction_dict['proposals_batch']
# shape(N,num_proposals,5)
# pre subsample for reduce consume of memory
if self.training:
self.pre_subsample(prediction_dict, feed_dict)
rois_batch = prediction_dict['rois_batch']
# note here base_feat (N,C,H,W),rois_batch (N,num_proposals,5)
# pooled_feat = self.rcnn_pooling(base_feat, rois_batch.view(-1, 5))
# import ipdb
# ipdb.set_trace()
pooled_feat = self.caroi_pooling(
all_feats, rois_batch.view(-1, 5), out_channels=1024)
# shape(N,C,1,1)
pooled_feat = self.feature_extractor.second_stage_feature(pooled_feat)
# shape(N,C)
if self.reduce:
pooled_feat = pooled_feat.mean(3).mean(2)
else:
pooled_feat = pooled_feat.view(self.rcnn_batch_size, -1)
rcnn_bbox_preds = self.rcnn_bbox_pred(pooled_feat)
rcnn_cls_scores = self.rcnn_cls_pred(pooled_feat)
rcnn_cls_probs = F.softmax(rcnn_cls_scores, dim=1)
prediction_dict['rcnn_cls_probs'] = rcnn_cls_probs
prediction_dict['rcnn_bbox_preds'] = rcnn_bbox_preds
prediction_dict['rcnn_cls_scores'] = rcnn_cls_scores
# used for track
proposals_order = prediction_dict['proposals_order']
prediction_dict['second_rpn_anchors'] = prediction_dict['anchors'][
proposals_order]
return prediction_dict
def init_weights(self):
# submodule init weights
self.feature_extractor.init_weights()
self.rpn_model.init_weights()
Filler.normal_init(self.rcnn_cls_pred, 0, 0.01, self.truncated)
Filler.normal_init(self.rcnn_bbox_pred, 0, 0.001, self.truncated)
def init_modules(self):
self.feature_extractor = ResNetFeatureExtractor(
self.feature_extractor_config)
self.rpn_model = RPNModel(self.rpn_config)
if self.pooling_mode == 'align':
self.rcnn_pooling = RoIAlignAvg(self.pooling_size,
self.pooling_size, 1.0 / 16.0)
elif self.pooling_mode == 'ps':
self.rcnn_pooling = PSRoIPool(7, 7, 1.0 / 16, 7, self.n_classes)
elif self.pooling_mode == 'psalign':
raise NotImplementedError('have not implemented yet!')
elif self.pooling_mode == 'deformable_psalign':
raise NotImplementedError('have not implemented yet!')
self.rcnn_cls_pred = nn.Linear(2048, self.n_classes)
if self.reduce:
in_channels = 2048
else:
in_channels = 2048 * 4 * 4
if self.class_agnostic:
self.rcnn_bbox_pred = nn.Linear(in_channels, 4)
else:
self.rcnn_bbox_pred = nn.Linear(in_channels, 4 * self.n_classes)
# loss module
if self.use_focal_loss:
self.rcnn_cls_loss = FocalLoss(2)
else:
self.rcnn_cls_loss = functools.partial(
F.cross_entropy, reduce=False)
self.rcnn_bbox_loss = nn.modules.SmoothL1Loss(reduce=False)
self.rcnn_pooling2 = RoIAlignAvg(self.pooling_size, self.pooling_size,
1.0 / 8.0)
self.reduce_pooling = nn.Sequential(
nn.Conv2d(1024 + 512, 1024, 1, 1, 0), nn.ReLU())
def init_param(self, model_config):
classes = model_config['classes']
self.classes = classes
self.n_classes = len(classes)
self.class_agnostic = model_config['class_agnostic']
self.pooling_size = model_config['pooling_size']
self.pooling_mode = model_config['pooling_mode']
self.crop_resize_with_max_pool = model_config[
'crop_resize_with_max_pool']
self.truncated = model_config['truncated']
self.use_focal_loss = model_config['use_focal_loss']
self.subsample_twice = model_config['subsample_twice']
self.rcnn_batch_size = model_config['rcnn_batch_size']
# some submodule config
self.feature_extractor_config = model_config['feature_extractor_config']
self.rpn_config = model_config['rpn_config']
# assigner
self.target_assigner = TargetAssigner(
model_config['target_assigner_config'])
# sampler
self.sampler = BalancedSampler(model_config['sampler_config'])
# self.reduce = model_config.get('reduce')
self.reduce = True
# self.visualizer = FeatVisualizer()
def pre_subsample(self, prediction_dict, feed_dict):
rois_batch = prediction_dict['rois_batch']
gt_boxes = feed_dict['gt_boxes']
gt_labels = feed_dict['gt_labels']
##########################
# assigner
##########################
# import ipdb
# ipdb.set_trace()
rcnn_cls_targets, rcnn_reg_targets, rcnn_cls_weights, rcnn_reg_weights = self.target_assigner.assign(
rois_batch[:, :, 1:], gt_boxes, gt_labels)
##########################
# subsampler
##########################
cls_criterion = None
pos_indicator = rcnn_reg_weights > 0
indicator = rcnn_cls_weights > 0
# subsample from all
# shape (N,M)
batch_sampled_mask = self.sampler.subsample_batch(
self.rcnn_batch_size,
pos_indicator,
indicator=indicator,
criterion=cls_criterion)
rcnn_cls_weights = rcnn_cls_weights[batch_sampled_mask]
rcnn_reg_weights = rcnn_reg_weights[batch_sampled_mask]
num_cls_coeff = (rcnn_cls_weights > 0).sum(dim=-1)
num_reg_coeff = (rcnn_reg_weights > 0).sum(dim=-1)
# check
assert num_cls_coeff, 'bug happens'
assert num_reg_coeff, 'bug happens'
prediction_dict[
'rcnn_cls_weights'] = rcnn_cls_weights / num_cls_coeff.float()
prediction_dict[
'rcnn_reg_weights'] = rcnn_reg_weights / num_reg_coeff.float()
prediction_dict['rcnn_cls_targets'] = rcnn_cls_targets[
batch_sampled_mask]
prediction_dict['rcnn_reg_targets'] = rcnn_reg_targets[
batch_sampled_mask]
prediction_dict['fake_match'] = self.target_assigner.analyzer.match[
batch_sampled_mask]
# update rois_batch
prediction_dict['rois_batch'] = rois_batch[batch_sampled_mask].view(
rois_batch.shape[0], -1, 5)
if not self.training:
# used for track
proposals_order = prediction_dict['proposals_order']
prediction_dict['proposals_order'] = proposals_order[
batch_sampled_mask]
def loss(self, prediction_dict, feed_dict):
"""
assign proposals label and subsample from them
Then calculate loss
"""
loss_dict = {}
# submodule loss
loss_dict.update(self.rpn_model.loss(prediction_dict, feed_dict))
# targets and weights
rcnn_cls_weights = prediction_dict['rcnn_cls_weights']
rcnn_reg_weights = prediction_dict['rcnn_reg_weights']
rcnn_cls_targets = prediction_dict['rcnn_cls_targets']
rcnn_reg_targets = prediction_dict['rcnn_reg_targets']
# classification loss
rcnn_cls_scores = prediction_dict['rcnn_cls_scores']
rcnn_cls_loss = self.rcnn_cls_loss(rcnn_cls_scores, rcnn_cls_targets)
rcnn_cls_loss *= rcnn_cls_weights
rcnn_cls_loss = rcnn_cls_loss.sum(dim=-1)
# bounding box regression L1 loss
rcnn_bbox_preds = prediction_dict['rcnn_bbox_preds']
rcnn_bbox_loss = self.rcnn_bbox_loss(rcnn_bbox_preds,
rcnn_reg_targets).sum(dim=-1)
rcnn_bbox_loss *= rcnn_reg_weights
# rcnn_bbox_loss *= rcnn_reg_weights
rcnn_bbox_loss = rcnn_bbox_loss.sum(dim=-1)
# loss weights has no gradients
loss_dict['rcnn_cls_loss'] = rcnn_cls_loss
loss_dict['rcnn_bbox_loss'] = rcnn_bbox_loss
# add rcnn_cls_targets to get the statics of rpn
# loss_dict['rcnn_cls_targets'] = rcnn_cls_targets
# analysis ap
rcnn_cls_probs = prediction_dict['rcnn_cls_probs']
num_gt = feed_dict['gt_labels'].numel()
fake_match = prediction_dict['fake_match']
self.target_assigner.analyzer.analyze_ap(
fake_match, rcnn_cls_probs[:, 1], num_gt, thresh=0.5)
return loss_dict
class SemanticFasterRCNN(Model):
def forward(self, feed_dict):
self.clean_stats()
prediction_dict = {}
# base model
base_feat = self.feature_extractor.first_stage_feature(
feed_dict['img'])
feed_dict.update({'base_feat': base_feat})
# batch_size = base_feat.shape[0]
# rpn model
prediction_dict.update(self.rpn_model.forward(feed_dict))
# proposals = prediction_dict['proposals_batch']
# shape(N,num_proposals,5)
# pre subsample for reduce consume of memory
if self.training:
stats = self.pre_subsample(prediction_dict, feed_dict)
self.stats.update(stats)
rois_batch = prediction_dict['rois_batch']
# note here base_feat (N,C,H,W),rois_batch (N,num_proposals,5)
pooled_feat = self.rcnn_pooling(base_feat, rois_batch.view(-1, 5))
# shape(N,C,1,1)
pooled_feat = self.feature_extractor.second_stage_feature(pooled_feat)
# semantic map
# if self.use_self_attention:
# pooled_feat_cls = pooled_feat.mean(3).mean(2)
# rcnn_cls_scores = self.rcnn_cls_pred(pooled_feat_cls)
# rcnn_cls_probs = F.softmax(rcnn_cls_scores, dim=1)
# # self-attention
# channel_attention = self.generate_channel_attention(pooled_feat)
# spatial_attention = self.generate_spatial_attention(pooled_feat)
# pooled_feat_reg = pooled_feat * channel_attention
# pooled_feat_reg = pooled_feat * spatial_attention
# pooled_feat_reg = pooled_feat_reg.mean(3).mean(2)
# rcnn_bbox_preds = self.rcnn_bbox_pred(pooled_feat_reg)
# else:
rcnn_cls_scores_map = self.rcnn_cls_pred(pooled_feat)
rcnn_cls_scores = rcnn_cls_scores_map.mean(3).mean(2)
saliency_map = F.softmax(rcnn_cls_scores_map, dim=1)
rcnn_cls_probs = F.softmax(rcnn_cls_scores, dim=1)
# rcnn_cls_probs = rcnn_cls_probs_map.mean(3).mean(2)
# shape(N,C)
rcnn_bbox_feat = pooled_feat * saliency_map[:, 1:, :, :]
# rcnn_bbox_feat = torch.cat([rcnn_bbox_feat, pooled_feat], dim=1)
rcnn_bbox_feat = rcnn_bbox_feat.mean(3).mean(2)
# if self.use_score:
# pooled_feat =
rcnn_bbox_preds = self.rcnn_bbox_pred(rcnn_bbox_feat)
prediction_dict['rcnn_cls_probs'] = rcnn_cls_probs
prediction_dict['rcnn_bbox_preds'] = rcnn_bbox_preds
prediction_dict['rcnn_cls_scores'] = rcnn_cls_scores
# used for track
proposals_order = prediction_dict['proposals_order']
prediction_dict['second_rpn_anchors'] = prediction_dict['anchors'][
proposals_order]
pred_boxes = self.bbox_coder.decode_batch(
rcnn_bbox_preds.view(1, -1, 4), rois_batch[:, :, 1:5])
rcnn_rois_batch = torch.zeros_like(rois_batch)
rcnn_rois_batch[:, :, 1:5] = pred_boxes.detach()
prediction_dict['rcnn_rois_batch'] = rcnn_rois_batch
# if self.training:
# # append gt
# rcnn_rois_batch = self.append_gt(rcnn_rois_batch,
# feed_dict['gt_boxes'])
# prediction_dict['rcnn_rois_batch'] = rcnn_rois_batch
###################################
# stats
###################################
# when enable cls, skip it
stats = self.target_assigner.assign(rcnn_rois_batch[:, :, 1:],
feed_dict['gt_boxes'],
feed_dict['gt_labels'])[-1]
self.rcnn_stats.update(stats)
# analysis ap
# when enable cls, otherwise it is no sense
if self.training:
rcnn_cls_probs = prediction_dict['rcnn_cls_probs']
num_gt = feed_dict['gt_labels'].numel()
fake_match = self.rcnn_stats['match']
stats = self.target_assigner.analyzer.analyze_ap(fake_match,
rcnn_cls_probs[:,
1],
num_gt,
thresh=0.5)
# collect stats
self.rcnn_stats.update(stats)
return prediction_dict
def clean_stats(self):
# rois bbox
self.stats = {
'num_det': 1,
'num_tp': 0,
'matched_thresh': 0,
'recall_thresh': 0,
'match': None,
# 'matched': 0,
# 'num_gt': 1,
}
# rcnn bbox(final bbox)
self.rcnn_stats = {
'num_det': 1,
'num_tp': 0,
'matched_thresh': 0,
'recall_thresh': 0,
'match': None,
# 'matched': 0,
}
def generate_channel_attention(self, feat):
return feat.mean(3, keepdim=True).mean(2, keepdim=True)
def generate_spatial_attention(self, feat):
return self.spatial_attention(feat)
def init_weights(self):
# submodule init weights
self.feature_extractor.init_weights()
self.rpn_model.init_weights()
Filler.normal_init(self.rcnn_cls_pred, 0, 0.01, self.truncated)
Filler.normal_init(self.rcnn_bbox_pred, 0, 0.001, self.truncated)
def init_modules(self):
self.feature_extractor = feature_extractors_builder.build(
self.feature_extractor_config)
# self.feature_extractor = ResNetFeatureExtractor(
# self.feature_extractor_config)
# self.feature_extractor = MobileNetFeatureExtractor(
# self.feature_extractor_config)
self.rpn_model = RPNModel(self.rpn_config)
if self.pooling_mode == 'align':
self.rcnn_pooling = RoIAlignAvg(self.pooling_size,
self.pooling_size, 1.0 / 16.0)
elif self.pooling_mode == 'ps':
self.rcnn_pooling = PSRoIPool(7, 7, 1.0 / 16, 7, self.n_classes)
elif self.pooling_mode == 'psalign':
raise NotImplementedError('have not implemented yet!')
elif self.pooling_mode == 'deformable_psalign':
raise NotImplementedError('have not implemented yet!')
if self.use_self_attention:
self.rcnn_cls_pred = nn.Linear(self.ndin, self.n_classes)
else:
self.rcnn_cls_pred = nn.Conv2d(self.ndin, self.n_classes, 3, 1, 1)
if self.class_agnostic:
self.rcnn_bbox_pred = nn.Linear(self.ndin, 4)
# self.rcnn_bbox_pred = nn.Conv2d(2048,4,3,1,1)
else:
self.rcnn_bbox_pred = nn.Linear(self.ndin, 4 * self.n_classes)
# loss module
if self.use_focal_loss:
self.rcnn_cls_loss = FocalLoss(2)
else:
self.rcnn_cls_loss = functools.partial(F.cross_entropy,
reduce=False)
self.rcnn_bbox_loss = nn.modules.SmoothL1Loss(reduce=False)
# attention
if self.use_self_attention:
self.spatial_attention = nn.Conv2d(self.ndin, 1, 3, 1, 1)
def init_param(self, model_config):
if model_config.get('din'):
self.ndin = model_config['din']
else:
self.ndin = 512
classes = model_config['classes']
self.classes = classes
self.n_classes = len(classes)
self.class_agnostic = model_config['class_agnostic']
self.pooling_size = model_config['pooling_size']
self.pooling_mode = model_config['pooling_mode']
self.crop_resize_with_max_pool = model_config[
'crop_resize_with_max_pool']
self.truncated = model_config['truncated']
self.use_focal_loss = model_config['use_focal_loss']
self.subsample_twice = model_config['subsample_twice']
self.rcnn_batch_size = model_config['rcnn_batch_size']
self.use_self_attention = model_config.get('use_self_attention')
# some submodule config
self.feature_extractor_config = model_config[
'feature_extractor_config']
self.rpn_config = model_config['rpn_config']
# assigner
self.target_assigner = TargetAssigner(
model_config['target_assigner_config'])
# bbox_coder
self.bbox_coder = self.target_assigner.bbox_coder
# sampler
self.sampler = BalancedSampler(model_config['sampler_config'])
def pre_subsample(self, prediction_dict, feed_dict):
rois_batch = prediction_dict['rois_batch']
gt_boxes = feed_dict['gt_boxes']
gt_labels = feed_dict['gt_labels']
##########################
# assigner
##########################
# import ipdb
# ipdb.set_trace()
rcnn_cls_targets, rcnn_reg_targets, rcnn_cls_weights, rcnn_reg_weights, stats = self.target_assigner.assign(
rois_batch[:, :, 1:], gt_boxes, gt_labels)
##########################
# subsampler
##########################
cls_criterion = None
pos_indicator = rcnn_reg_weights > 0
indicator = rcnn_cls_weights > 0
# subsample from all
# shape (N,M)
batch_sampled_mask = self.sampler.subsample_batch(
self.rcnn_batch_size,
pos_indicator,
indicator=indicator,
criterion=cls_criterion)
rcnn_cls_weights = rcnn_cls_weights[batch_sampled_mask]
rcnn_reg_weights = rcnn_reg_weights[batch_sampled_mask]
num_cls_coeff = (rcnn_cls_weights > 0).sum(dim=-1)
num_reg_coeff = (rcnn_reg_weights > 0).sum(dim=-1)
# check
assert num_cls_coeff, 'bug happens'
num_reg_coeff = torch.max(num_reg_coeff,
torch.ones_like(num_reg_coeff))
prediction_dict[
'rcnn_cls_weights'] = rcnn_cls_weights / num_cls_coeff.float()
prediction_dict[
'rcnn_reg_weights'] = rcnn_reg_weights / num_reg_coeff.float()
prediction_dict['rcnn_cls_targets'] = rcnn_cls_targets[
batch_sampled_mask]
prediction_dict['rcnn_reg_targets'] = rcnn_reg_targets[
batch_sampled_mask]
prediction_dict['fake_match'] = self.target_assigner.analyzer.match[
batch_sampled_mask]
# update rois_batch
prediction_dict['rois_batch'] = rois_batch[batch_sampled_mask].view(
rois_batch.shape[0], -1, 5)
stats['match'] = stats['match'][batch_sampled_mask]
return stats
def loss(self, prediction_dict, feed_dict):
"""
assign proposals label and subsample from them
Then calculate loss
"""
loss_dict = {}
# submodule loss
loss_dict.update(self.rpn_model.loss(prediction_dict, feed_dict))
# targets and weights
rcnn_cls_weights = prediction_dict['rcnn_cls_weights']
rcnn_reg_weights = prediction_dict['rcnn_reg_weights']
rcnn_cls_targets = prediction_dict['rcnn_cls_targets']
rcnn_reg_targets = prediction_dict['rcnn_reg_targets']
# classification loss
rcnn_cls_scores = prediction_dict['rcnn_cls_scores']
rcnn_cls_loss = self.rcnn_cls_loss(rcnn_cls_scores, rcnn_cls_targets)
rcnn_cls_loss *= rcnn_cls_weights
rcnn_cls_loss = rcnn_cls_loss.sum(dim=-1)
# bounding box regression L1 loss
rcnn_bbox_preds = prediction_dict['rcnn_bbox_preds']
rcnn_bbox_loss = self.rcnn_bbox_loss(rcnn_bbox_preds,
rcnn_reg_targets).sum(dim=-1)
rcnn_bbox_loss *= rcnn_reg_weights
# rcnn_bbox_loss *= rcnn_reg_weights
rcnn_bbox_loss = rcnn_bbox_loss.sum(dim=-1)
# loss weights has no gradients
loss_dict['rcnn_cls_loss'] = rcnn_cls_loss
loss_dict['rcnn_bbox_loss'] = rcnn_bbox_loss
# add rcnn_cls_targets to get the statics of rpn
# loss_dict['rcnn_cls_targets'] = rcnn_cls_targets
# analysis ap
rcnn_cls_probs = prediction_dict['rcnn_cls_probs']
num_gt = feed_dict['gt_labels'].numel()
fake_match = prediction_dict['fake_match']
self.target_assigner.analyzer.analyze_ap(fake_match,
rcnn_cls_probs[:, 1],
num_gt,
thresh=0.5)
return loss_dict
class PRModel(Model):
def init_weights(self):
print("loading pre-trained weight")
weight = torch.load(self.model_path,
map_location=lambda storage, loc: storage)
from collections import OrderedDict
new_state_dict = OrderedDict()
module_dict = self.det_model.state_dict()
for k, v in weight.items():
if k not in module_dict:
continue
name = k[7:] # remove `module.`
new_state_dict[name] = v
module_dict.update(new_state_dict)
self.det_model.load_state_dict(module_dict)
# else:
# new_state_dict = OrderedDict()
# for k, v in weight.items():
# name = k[7:] # remove `module.`
# new_state_dict[name] = v
# self.det_model.load_state_dict(new_state_dict)
def pre_forward(self):
self.freeze_modules()
for param in self.det_model.multibox.box_3d_feature.parameters():
param.requires_grad = True
for param in self.det_model.multibox.orients_out.parameters():
param.requires_grad = True
for param in self.det_model.multibox.dims_3d_out.parameters():
param.requires_grad = True
self.freeze_bn(self)
self.unfreeze_bn(self.det_model.multibox.box_3d_feature)
self.unfreeze_bn(self.det_model.multibox.orients_out)
self.unfreeze_bn(self.det_model.multibox.dims_3d_out)
def init_param(self, model_config):
self.n_classes = len(model_config['classes']) + 1
self.rcnn_batch_size = model_config['rcnn_batch_size']
self.profiler = Profiler()
self.encoder = DataEncoder(ModelCFG,
anchor_type=ModelCFG['anchor_type'],
infer_mode=True)
self.num_bins = 2
self.model_path = model_config['model_path']
self.target_assigner = TargetAssigner(
model_config['target_assigner_config'])
self.sampler = BalancedSampler(model_config['sampler_config'])
def init_modules(self):
self.det_model = PRNet(ModelCFG)
# dims loss
self.dims_loss = nn.SmoothL1Loss(reduce=False)
# multibin loss
self.multibin_loss = MultiBinLoss(self.num_bins)
def forward(self, feed_dict):
self.target_assigner.bbox_coder_3d.mean_dims = feed_dict['mean_dims']
image = feed_dict['img']
loc1_preds, loc2_preds, os_preds, cls_preds,\
dims_3d_out, orients_out = self.det_model.forward(
image)
# if not self.training:
# boxes, lbls, scores, has_obj = self.encoder.decode(
# loc2_preds.data.squeeze(0), F.softmax(cls_preds.squeeze(0), dim=1).data, os_preds.squeeze(0), Nt=0.5)
prediction_dict = {}
prediction_dict['dims_3d_out'] = dims_3d_out
prediction_dict['orients_out'] = orients_out
# prediction_dict['rcnn_cls_probs'] = scores
# prediction_dict['rcnn_bbox_pred'] =
return prediction_dict
def generate_anchors(self, im_shape):
default_boxes = self.encoder.default_boxes
xymin = default_boxes[:, :2] - 0.5 * default_boxes[:, 2:]
xymax = default_boxes[:, :2] + 0.5 * default_boxes[:, 2:]
xymin = xymin
xymax = xymax
normalized_anchors = torch.cat([xymin, xymax], dim=-1)
anchors = torch.zeros_like(normalized_anchors)
anchors[:, ::2] = normalized_anchors[:, ::2] * im_shape[1]
anchors[:, 1::2] = normalized_anchors[:, 1::2] * im_shape[0]
return anchors
def squeeze_bbox_preds(self, rcnn_bbox_preds, rcnn_cls_targets, out_c=4):
"""
squeeze rcnn_bbox_preds from shape (N, 4 * num_classes) to shape (N, 4)
Args:
rcnn_bbox_preds: shape(N, num_classes, 4)
rcnn_cls_targets: shape(N, 1)
"""
rcnn_bbox_preds = rcnn_bbox_preds.view(-1, self.n_classes, out_c)
batch_size = rcnn_bbox_preds.shape[0]
offset = torch.arange(0, batch_size) * rcnn_bbox_preds.size(1)
rcnn_cls_targets = rcnn_cls_targets + offset.type_as(rcnn_cls_targets)
rcnn_bbox_preds = rcnn_bbox_preds.contiguous().view(
-1, out_c)[rcnn_cls_targets[0]].unsqueeze(0)
return rcnn_bbox_preds
def loss(self, prediction_dict, feed_dict):
# import ipdb
# ipdb.set_trace()
loss_dict = {}
anchors = self.generate_anchors(feed_dict['im_info'][0][:2])
gt_boxes = feed_dict['gt_boxes']
gt_labels = feed_dict['gt_labels']
local_angle = feed_dict['local_angle']
gt_boxes_3d = feed_dict['gt_boxes_3d']
gt_boxes_3d = torch.cat([gt_boxes_3d[:, :, :3], local_angle], dim=-1)
rcnn_cls_targets, rcnn_reg_targets,\
rcnn_cls_weights, rcnn_reg_weights,\
rcnn_reg_targets_3d, rcnn_reg_weights_3d = self.target_assigner.assign(
anchors.unsqueeze(0), gt_boxes, gt_boxes_3d, gt_labels)
pos_indicator = rcnn_reg_weights > 0
indicator = rcnn_cls_weights > 0
# rpn_cls_probs = prediction_dict['rpn_cls_probs'][:, :, 1]
cls_criterion = None
batch_sampled_mask = self.sampler.subsample_batch(
self.rcnn_batch_size,
pos_indicator,
criterion=cls_criterion,
indicator=indicator)
batch_sampled_mask = batch_sampled_mask.type_as(rcnn_cls_weights)
rcnn_reg_weights_3d = rcnn_reg_weights_3d * batch_sampled_mask
num_reg_coeff = (rcnn_reg_weights_3d > 0).sum(dim=1)
if num_reg_coeff == 0:
num_reg_coeff = torch.ones([]).type_as(num_reg_coeff)
rcnn_reg_weights_3d = rcnn_reg_weights_3d / num_reg_coeff.float()
# dims loss
dims_pred = self.squeeze_bbox_preds(prediction_dict['dims_3d_out'],
rcnn_cls_targets, 3)
dims_loss = self.dims_loss(dims_pred, rcnn_reg_targets_3d[:, :, :3])
dims_loss = dims_loss * rcnn_reg_weights_3d.unsqueeze(-1)
dims_loss = dims_loss.sum(dim=-1).sum(dim=-1)
# multibin loss
orient_loss, angle_tp_mask = self.multibin_loss(
prediction_dict['orients_out'], rcnn_reg_targets_3d[:, :, -1:])
orient_loss = orient_loss * rcnn_reg_weights_3d
orient_loss = orient_loss.sum(dim=-1)
loss_dict['dims_loss'] = dims_loss
loss_dict['orient_loss'] = orient_loss
prediction_dict['rcnn_reg_weights'] = rcnn_reg_weights_3d[
batch_sampled_mask > 0]
# angles stats
angle_tp_mask = angle_tp_mask[rcnn_reg_weights_3d > 0]
angles_tp_num = angle_tp_mask.int().sum().item()
angles_all_num = angle_tp_mask.numel()
self.target_assigner.stat.update({
'cls_orient_2s_all_num': angles_all_num,
'cls_orient_2s_tp_num': angles_tp_num
})
return loss_dict
class IoUFasterRCNN(Model):
def forward(self, feed_dict):
# import ipdb
# ipdb.set_trace()
prediction_dict = {}
# base model
base_feat = self.feature_extractor.first_stage_feature(
feed_dict['img'])
feed_dict.update({'base_feat': base_feat})
# batch_size = base_feat.shape[0]
# rpn model
prediction_dict.update(self.rpn_model.forward(feed_dict))
# proposals = prediction_dict['proposals_batch']
# shape(N,num_proposals,5)
# pre subsample for reduce consume of memory
if self.training:
self.pre_subsample(prediction_dict, feed_dict)
rois_batch = prediction_dict['rois_batch']
# note here base_feat (N,C,H,W),rois_batch (N,num_proposals,5)
pooled_feat = self.rcnn_pooling(base_feat, rois_batch.view(-1, 5))
# shape(N,C,1,1)
pooled_feat = self.feature_extractor.second_stage_feature(pooled_feat)
########################################
# semantic map
########################################
rcnn_cls_scores_map = self.rcnn_cls_pred(pooled_feat)
rcnn_cls_scores = rcnn_cls_scores_map.mean(3).mean(2)
saliency_map = F.softmax(rcnn_cls_scores_map, dim=1)
rcnn_cls_probs = F.softmax(rcnn_cls_scores, dim=1)
# shape(N,C)
rcnn_bbox_feat = pooled_feat * saliency_map[:, 1:, :, :]
rcnn_bbox_feat = rcnn_bbox_feat.mean(3).mean(2)
rcnn_bbox_preds = self.rcnn_bbox_pred(rcnn_bbox_feat)
rcnn_cls_probs = F.softmax(rcnn_cls_scores, dim=1)
# iou
rcnn_iou = self.rcnn_iou(rcnn_bbox_feat)
rcnn_iou = F.sigmoid(rcnn_iou)
if self.use_iox:
# iog
rcnn_iog = self.rcnn_iog(rcnn_bbox_feat)
rcnn_iog = F.sigmoid(rcnn_iog)
# iod
rcnn_iod = self.rcnn_iog(rcnn_bbox_feat)
rcnn_iod = F.sigmoid(rcnn_iod)
rcnn_iou_indirect = self.calculate_iou(rcnn_iog, rcnn_iod)
rcnn_iou_final = (
1 - self.alpha) * rcnn_iou_indirect + self.alpha * rcnn_iou
prediction_dict['rcnn_iog'] = rcnn_iog
prediction_dict['rcnn_iod'] = rcnn_iod
else:
# use iou directly
rcnn_iou_final = rcnn_iou
rcnn_fg_probs_final = rcnn_cls_probs[:, 1:] * torch.exp(-torch.pow(
(1 - rcnn_iou_final[:, 1:]), 2) / self.theta)
prediction_dict['rcnn_cls_probs'] = torch.cat(
[rcnn_fg_probs_final, rcnn_fg_probs_final], dim=-1)
prediction_dict['rcnn_bbox_preds'] = rcnn_bbox_preds
prediction_dict['rcnn_cls_scores'] = rcnn_cls_scores
prediction_dict['rcnn_iou'] = rcnn_iou
# used for track
proposals_order = prediction_dict['proposals_order']
prediction_dict['second_rpn_anchors'] = prediction_dict['anchors'][0][
proposals_order]
return prediction_dict
def calculate_iou(self, iog, iod):
mask = ~(iod == 0)
iou_indirect = torch.zeros_like(iog)
iod = iod[mask]
iog = iog[mask]
iou_indirect[mask] = (iod * iog) / (iod + iog - iod * iog)
return iou_indirect
def init_weights(self):
# submodule init weights
self.feature_extractor.init_weights()
self.rpn_model.init_weights()
Filler.normal_init(self.rcnn_cls_pred, 0, 0.01, self.truncated)
Filler.normal_init(self.rcnn_bbox_pred, 0, 0.001, self.truncated)
# freeze module
# self.freeze_modules()
# # unfreeze some layers
# unfreeze_params = [
# self.rpn_model.rpn_iou.bias, self.rpn_model.rpn_iou.weight,
# self.rcnn_iou.bias, self.rcnn_iou.weight
# ]
# for param in unfreeze_params:
# param.requires_grad = True
def init_modules(self):
self.feature_extractor = ResNetFeatureExtractor(
self.feature_extractor_config)
self.rpn_model = IoURPNModel(self.rpn_config)
self.rcnn_pooling = RoIAlignAvg(self.pooling_size, self.pooling_size,
1.0 / 16.0)
self.rcnn_cls_pred = nn.Conv2d(2048, self.n_classes, 3, 1, 1)
in_channels = 2048
self.rcnn_iou = nn.Linear(in_channels, self.n_classes)
self.rcnn_iog = nn.Linear(in_channels, self.n_classes)
self.rcnn_iod = nn.Linear(in_channels, self.n_classes)
if self.class_agnostic:
self.rcnn_bbox_pred = nn.Linear(in_channels, 4)
else:
self.rcnn_bbox_pred = nn.Linear(in_channels, 4 * self.n_classes)
# loss module
if self.use_focal_loss:
self.rcnn_cls_loss = FocalLoss(2)
else:
self.rcnn_cls_loss = functools.partial(F.cross_entropy,
reduce=False)
self.rcnn_iou_loss = nn.MSELoss(reduce=False)
self.rcnn_bbox_loss = nn.modules.SmoothL1Loss(reduce=False)
def init_param(self, model_config):
classes = model_config['classes']
self.classes = classes
self.n_classes = len(classes)
self.class_agnostic = model_config['class_agnostic']
self.pooling_size = model_config['pooling_size']
self.pooling_mode = model_config['pooling_mode']
self.crop_resize_with_max_pool = model_config[
'crop_resize_with_max_pool']
self.truncated = model_config['truncated']
self.theta = 1.0
self.alpha = 0.6
self.use_focal_loss = model_config['use_focal_loss']
self.subsample_twice = model_config['subsample_twice']
self.rcnn_batch_size = model_config['rcnn_batch_size']
self.iou_criterion = model_config['iou_criterion']
self.use_iox = model_config['use_iox']
# self.use_cls_pred = model_config['use_cls_pred']
# some submodule config
self.feature_extractor_config = model_config[
'feature_extractor_config']
self.rpn_config = model_config['rpn_config']
# assigner
self.target_assigner = LEDTargetAssigner(
model_config['target_assigner_config'])
# sampler
# self.sampler = HardNegativeSampler(model_config['sampler_config'])
if self.iou_criterion:
self.sampler = DetectionSampler(model_config['sampler_config'])
else:
self.sampler = BalancedSampler(model_config['sampler_config'])
def pre_subsample(self, prediction_dict, feed_dict):
rois_batch = prediction_dict['rois_batch']
gt_boxes = feed_dict['gt_boxes']
gt_labels = feed_dict['gt_labels']
##########################
# assigner
##########################
# import ipdb
# ipdb.set_trace()
rcnn_cls_targets, rcnn_reg_targets, rcnn_cls_weights, rcnn_reg_weights = self.target_assigner.assign(
rois_batch[:, :, 1:], gt_boxes, gt_labels)
##########################
# subsampler
##########################
if self.iou_criterion:
cls_criterion = self.target_assigner.matcher.assigned_overlaps_batch
else:
cls_criterion = None
pos_indicator = rcnn_reg_weights > 0
indicator = rcnn_cls_weights > 0
# subsample from all
# shape (N,M)
batch_sampled_mask = self.sampler.subsample_batch(
self.rcnn_batch_size,
pos_indicator,
indicator=indicator,
criterion=cls_criterion)
rcnn_cls_weights = rcnn_cls_weights[batch_sampled_mask]
rcnn_reg_weights = rcnn_reg_weights[batch_sampled_mask]
num_cls_coeff = (rcnn_cls_weights > 0).sum(dim=-1)
num_reg_coeff = (rcnn_reg_weights > 0).sum(dim=-1)
# check
assert num_cls_coeff, 'bug happens'
assert num_reg_coeff, 'bug happens'
prediction_dict[
'rcnn_cls_weights'] = rcnn_cls_weights / num_cls_coeff.float()
prediction_dict[
'rcnn_reg_weights'] = rcnn_reg_weights / num_reg_coeff.float()
prediction_dict['rcnn_cls_targets'] = rcnn_cls_targets[
batch_sampled_mask]
# import ipdb
# ipdb.set_trace()
prediction_dict['rcnn_reg_targets'] = rcnn_reg_targets[
batch_sampled_mask]
# update rois_batch
prediction_dict['rois_batch'] = rois_batch[batch_sampled_mask].view(
rois_batch.shape[0], -1, 5)
if not self.training:
# used for track
proposals_order = prediction_dict['proposals_order']
prediction_dict['proposals_order'] = proposals_order[
batch_sampled_mask]
# iou targets
rcnn_iou_targets = self.target_assigner.matcher.assigned_overlaps_batch
prediction_dict['rcnn_iou_targets'] = rcnn_iou_targets[
batch_sampled_mask]
# iog targets
rcnn_iog_targets = self.target_assigner.matcher.assigned_iog_batch
prediction_dict['rcnn_iog_targets'] = rcnn_iog_targets[
batch_sampled_mask]
# iod targets
rcnn_iod_targets = self.target_assigner.matcher.assigned_iod_batch
prediction_dict['rcnn_iod_targets'] = rcnn_iod_targets[
batch_sampled_mask]
def loss(self, prediction_dict, feed_dict):
"""
assign proposals label and subsample from them
Then calculate loss
"""
loss_dict = {}
# submodule loss
loss_dict.update(self.rpn_model.loss(prediction_dict, feed_dict))
# targets and weights
rcnn_cls_weights = prediction_dict['rcnn_cls_weights']
rcnn_reg_weights = prediction_dict['rcnn_reg_weights']
rcnn_cls_targets = prediction_dict['rcnn_cls_targets']
rcnn_reg_targets = prediction_dict['rcnn_reg_targets']
# iou loss
rcnn_iou = prediction_dict['rcnn_iou'][:, 1]
rcnn_iou_targets = prediction_dict['rcnn_iou_targets']
rcnn_iou = torch.exp(rcnn_iou)
rcnn_iou_targets = torch.exp(rcnn_iou_targets)
rcnn_iou_loss = self.rcnn_iou_loss(rcnn_iou, rcnn_iou_targets)
rcnn_iou_loss *= rcnn_cls_weights
rcnn_iou_loss = rcnn_iou_loss.sum(dim=-1)
if self.use_iox:
# iog loss
rcnn_iog = prediction_dict['rcnn_iog'][:, 1]
rcnn_iog_targets = prediction_dict['rcnn_iog_targets']
rcnn_iog = torch.exp(rcnn_iog)
rcnn_iog_targets = torch.exp(rcnn_iog_targets)
rcnn_iog_loss = self.rcnn_iou_loss(rcnn_iog, rcnn_iog_targets)
rcnn_iog_loss *= rcnn_cls_weights
rcnn_iog_loss = rcnn_iog_loss.sum(dim=-1)
# iod loss
rcnn_iod = prediction_dict['rcnn_iod'][:, 1]
rcnn_iod_targets = prediction_dict['rcnn_iod_targets']
rcnn_iod = torch.exp(rcnn_iod)
rcnn_iod_targets = torch.exp(rcnn_iod_targets)
rcnn_iod_loss = self.rcnn_iou_loss(rcnn_iod, rcnn_iod_targets)
rcnn_iod_loss *= rcnn_cls_weights
rcnn_iod_loss = rcnn_iod_loss.sum(dim=-1)
loss_dict['rcnn_iod_loss'] = rcnn_iod_loss
loss_dict['rcnn_iog_loss'] = rcnn_iog_loss
# classification loss
rcnn_cls_scores = prediction_dict['rcnn_cls_scores']
# exp
# rcnn_cls_scores = torch.exp(rcnn_cls_scores)
# rcnn_cls_targets = torch.exp(rcnn_cls_targets)
rcnn_cls_loss = self.rcnn_cls_loss(rcnn_cls_scores, rcnn_cls_targets)
rcnn_cls_loss *= rcnn_cls_weights
rcnn_cls_loss = rcnn_cls_loss.sum(dim=-1)
# bounding box regression L1 loss
rcnn_bbox_preds = prediction_dict['rcnn_bbox_preds']
rcnn_bbox_loss = self.rcnn_bbox_loss(rcnn_bbox_preds,
rcnn_reg_targets).sum(dim=-1)
rcnn_bbox_loss *= rcnn_reg_weights
# rcnn_bbox_loss *= rcnn_reg_weights
rcnn_bbox_loss = rcnn_bbox_loss.sum(dim=-1)
# loss weights has no gradients
loss_dict['rcnn_cls_loss'] = rcnn_cls_loss
loss_dict['rcnn_bbox_loss'] = rcnn_bbox_loss
loss_dict['rcnn_iou_loss'] = rcnn_iou_loss
# add rcnn_cls_targets to get the statics of rpn
# loss_dict['rcnn_cls_targets'] = rcnn_cls_targets
return loss_dict
class Mono3DFasterRCNN(Model):
def forward(self, feed_dict):
prediction_dict = {}
# base model
base_feat = self.feature_extractor.first_stage_feature(
feed_dict['img'])
feed_dict.update({'base_feat': base_feat})
# rpn model
prediction_dict.update(self.rpn_model.forward(feed_dict))
if self.training and self.train_2d:
self.pre_subsample(prediction_dict, feed_dict)
rois_batch = prediction_dict['rois_batch']
# note here base_feat (N,C,H,W),rois_batch (N,num_proposals,5)
pooled_feat = self.rcnn_pooling(base_feat, rois_batch.view(-1, 5))
# shape(N,C,1,1)
pooled_feat = self.feature_extractor.second_stage_feature(pooled_feat)
rcnn_cls_scores_map = self.rcnn_cls_pred(pooled_feat)
rcnn_cls_scores = rcnn_cls_scores_map.mean(3).mean(2)
saliency_map = F.softmax(rcnn_cls_scores_map, dim=1)
rcnn_cls_probs = F.softmax(rcnn_cls_scores, dim=1)
pooled_feat = pooled_feat * saliency_map[:, 1:, :, :]
reduced_pooled_feat = pooled_feat.mean(3).mean(2)
rcnn_bbox_preds = self.rcnn_bbox_pred(reduced_pooled_feat)
# rcnn_cls_scores = self.rcnn_cls_pred(pooled_feat)
rcnn_cls_probs = F.softmax(rcnn_cls_scores, dim=1)
prediction_dict['rcnn_cls_probs'] = rcnn_cls_probs
prediction_dict['rcnn_bbox_preds'] = rcnn_bbox_preds
prediction_dict['rcnn_cls_scores'] = rcnn_cls_scores
# used for track
proposals_order = prediction_dict['proposals_order']
prediction_dict['second_rpn_anchors'] = prediction_dict['anchors'][
proposals_order]
###################################
# 3d training
###################################
rcnn_bbox_preds = rcnn_bbox_preds.detach()
final_bbox = self.target_assigner.bbox_coder.decode_batch(
rcnn_bbox_preds.unsqueeze(0), rois_batch[:, :, 1:])
final_rois_inds = torch.zeros_like(final_bbox[:, :, -1:])
final_rois_batch = torch.cat([final_rois_inds, final_bbox], dim=-1)
if self.training and self.train_3d:
prediction_dict['rois_batch'] = final_rois_batch
self.pre_subsample(prediction_dict, feed_dict)
final_rois_batch = prediction_dict['rois_batch']
# shape(M,C,7,7)
mono_3d_pooled_feat = self.rcnn_pooling(base_feat,
final_rois_batch.view(-1, 5))
# H-concat to abbrevate the perspective transform
# shape(N,M,9)
# import ipdb
# ipdb.set_trace()
# concat with pooled feat
# mono_3d_pooled_feat = torch.cat([mono_3d_pooled_feat, H_inv], dim=1)
# mono_3d_pooled_feat = self.reduced_layer(mono_3d_pooled_feat)
mono_3d_pooled_feat = self.feature_extractor.third_stage_feature(
mono_3d_pooled_feat)
mono_3d_pooled_feat = mono_3d_pooled_feat.mean(3).mean(2)
if self.h_cat:
H_inv = self.calc_Hinv(final_rois_batch, feed_dict['p2'],
feed_dict['im_info'],
base_feat.shape[-2:])[0].view(-1, 9)
mono_3d_pooled_feat = torch.cat([mono_3d_pooled_feat, H_inv],
dim=-1)
rcnn_3d = self.rcnn_3d_pred(mono_3d_pooled_feat)
# normalize to [0,1]
# rcnn_3d[:, 5:11] = F.sigmoid(rcnn_3d[:, 5:11])
prediction_dict['rcnn_3d'] = rcnn_3d
if not self.training:
# rcnn_3d = self.target_assigner.bbox_coder_3d.decode_batch_bbox(
# rcnn_3d, rois_batch)
rcnn_3d = self.target_assigner.bbox_coder_3d.decode_batch_dims(
rcnn_3d, final_rois_batch)
prediction_dict['rcnn_3d'] = rcnn_3d
return prediction_dict
def calc_Hinv(self, final_rois_batch, p2, img_size, feat_size):
p2 = p2[0]
K_c = p2[:, :3]
fx = K_c[0, 0]
fy = K_c[1, 1]
px = K_c[0, 2]
py = K_c[1, 2]
fw = self.pooling_size
fh = self.pooling_size
proposals = final_rois_batch[:, :, 1:]
rw = (proposals[:, :, 2] - proposals[:, :, 0] +
1) / img_size[:, 1] * feat_size[1]
rh = (proposals[:, :, 3] - proposals[:, :, 1] +
1) / img_size[:, 0] * feat_size[0]
# rx = (proposals[:, :, 0] + proposals[:, :, 2]) / 2
# ry = (proposals[:, :, 1] + proposals[:, :, 3]) / 2
# roi camera intrinsic parameters
sw = fw / rw
sh = fh / rh
fx_roi = fx * sw
fy_roi = fy * sh
zeros = torch.zeros_like(fx_roi)
ones = torch.ones_like(fx_roi)
px_roi = (px - proposals[:, :, 0]) * sw
py_roi = (py - proposals[:, :, 1]) * sh
K_roi = torch.stack(
[fx_roi, zeros, px_roi, zeros, fy_roi, py_roi, zeros, zeros, ones],
dim=-1).view(-1, 3, 3)
H = K_roi.matmul(torch.inverse(K_c))
# import ipdb
# ipdb.set_trace()
# Too slow
# H_inv = []
# for i in range(H.shape[0]):
# H_inv.append(torch.inverse(H[i]))
# H_inv = torch.stack(H_inv, dim=0)
# import ipdb
# ipdb.set_trace()
H_np = H.cpu().numpy()
H_inv_np = np.linalg.inv(H_np)
H_inv = torch.from_numpy(H_inv_np).cuda().float()
return H_inv.view(1, -1, 9)
def pre_forward(self):
# params
if self.train_3d and self.training and not self.train_2d:
self.freeze_modules()
for parameter in self.feature_extractor.third_stage_feature.parameters(
):
parameter.requires_grad = True
for param in self.rcnn_3d_pred.parameters():
param.requires_grad = True
self.freeze_bn(self)
self.unfreeze_bn(self.feature_extractor.third_stage_feature)
def init_weights(self):
# submodule init weights
self.feature_extractor.init_weights()
self.rpn_model.init_weights()
Filler.normal_init(self.rcnn_cls_pred, 0, 0.01, self.truncated)
Filler.normal_init(self.rcnn_bbox_pred, 0, 0.001, self.truncated)
# if self.train_3d and self.training:
# self.freeze_modules()
# for parameter in self.feature_extractor.third_stage_feature.parameters(
# ):
# parameter.requires_grad = True
# for param in self.rcnn_3d_preds_new.parameters():
# param.requires_grad = True
def init_modules(self):
self.feature_extractor = ResNetFeatureExtractor(
self.feature_extractor_config)
self.rpn_model = RPNModel(self.rpn_config)
if self.pooling_mode == 'align':
self.rcnn_pooling = RoIAlignAvg(self.pooling_size,
self.pooling_size, 1.0 / 16.0)
elif self.pooling_mode == 'ps':
self.rcnn_pooling = PSRoIPool(7, 7, 1.0 / 16, 7, self.n_classes)
elif self.pooling_mode == 'psalign':
raise NotImplementedError('have not implemented yet!')
elif self.pooling_mode == 'deformable_psalign':
raise NotImplementedError('have not implemented yet!')
self.rcnn_cls_pred = nn.Conv2d(2048, self.n_classes, 3, 1, 1)
# self.rcnn_cls_pred = nn.Linear(2048, self.n_classes)
if self.reduce:
in_channels = 2048
else:
in_channels = 2048 * 4 * 4
if self.class_agnostic:
self.rcnn_bbox_pred = nn.Linear(in_channels, 4)
else:
self.rcnn_bbox_pred = nn.Linear(in_channels, 4 * self.n_classes)
# loss module
if self.use_focal_loss:
self.rcnn_cls_loss = FocalLoss(2)
else:
self.rcnn_cls_loss = functools.partial(F.cross_entropy,
reduce=False)
self.rcnn_bbox_loss = nn.modules.SmoothL1Loss(reduce=False)
# some 3d statistic
# some 2d points projected from 3d
# self.rcnn_3d_pred = nn.Linear(in_channels, 3 + 4 + 3 + 1 + 4 + 2)
if self.h_cat:
c = in_channels + 9
else:
c = in_channels
# self.rcnn_3d_pred = nn.Linear(c, 3 + 4 + 11 + 2 + 1)
self.rcnn_3d_pred = nn.Linear(c, 3 + 4 * 2)
# self.rcnn_3d_loss = MultiBinLoss(num_bins=self.num_bins)
# self.rcnn_3d_loss = MultiBinRegLoss(num_bins=self.num_bins)
self.rcnn_3d_loss = OrientationLoss(split_loss=True)
# reduce for concat with the following layers
# self.reduced_layer = nn.Sequential(
# * [nn.Conv2d(1024 + 9, 1024, 1, 1, 0), nn.BatchNorm2d(1024)])
def init_param(self, model_config):
classes = model_config['classes']
self.classes = classes
self.n_classes = len(classes)
self.class_agnostic = model_config['class_agnostic']
self.pooling_size = model_config['pooling_size']
self.pooling_mode = model_config['pooling_mode']
self.crop_resize_with_max_pool = model_config[
'crop_resize_with_max_pool']
self.truncated = model_config['truncated']
self.use_focal_loss = model_config['use_focal_loss']
self.subsample_twice = model_config['subsample_twice']
self.rcnn_batch_size = model_config['rcnn_batch_size']
# some submodule config
self.feature_extractor_config = model_config[
'feature_extractor_config']
self.rpn_config = model_config['rpn_config']
# sampler
self.sampler = BalancedSampler(model_config['sampler_config'])
# self.reduce = model_config.get('reduce')
self.reduce = True
self.visualizer = FeatVisualizer()
self.num_bins = 4
self.train_3d = False
self.train_2d = not self.train_3d
# more accurate bbox for 3d prediction
if self.train_3d:
fg_thresh = 0.6
else:
fg_thresh = 0.5
model_config['target_assigner_config']['fg_thresh'] = fg_thresh
# assigner
self.target_assigner = TargetAssigner(
model_config['target_assigner_config'])
self.profiler = Profiler()
self.h_cat = False
def pre_subsample(self, prediction_dict, feed_dict):
rois_batch = prediction_dict['rois_batch']
gt_boxes = feed_dict['gt_boxes']
gt_labels = feed_dict['gt_labels']
# gt_boxes_3d = feed_dict['coords']
# dims_2d = feed_dict['dims_2d']
# use local angle
# oritations = feed_dict['local_angle_oritation']
# local_angle = feed_dict['local_angle']
# shape(N,7)
gt_boxes_3d = feed_dict['gt_boxes_3d']
# orient
# cls_orient = torch.unsqueeze(feed_dict['cls_orient'], dim=-1).float()
# reg_orient = feed_dict['reg_orient']
# orient = torch.cat([cls_orient, reg_orient], dim=-1)
# h_2ds = feed_dict['h_2d']
# c_2ds = feed_dict['c_2d']
# r_2ds = feed_dict['r_2d']
# cls_orient_4s = feed_dict['cls_orient_4']
# center_orients = feed_dict['center_orient']
# distances = feed_dict['distance']
# d_ys = feed_dict['d_y']
# angles_camera = feed_dict['angles_camera']
# here just concat them
# dims and their projection
# gt_boxes_3d = torch.cat(
# [gt_boxes_3d[:, :, :3], orient, distances, d_ys], dim=-1)
encoded_side_points = feed_dict['encoded_side_points']
gt_boxes_3d = torch.cat([gt_boxes_3d[:, :, :3], encoded_side_points],
dim=-1)
##########################
# assigner
##########################
rcnn_cls_targets, rcnn_reg_targets,\
rcnn_cls_weights, rcnn_reg_weights,\
rcnn_reg_targets_3d, rcnn_reg_weights_3d = self.target_assigner.assign(
rois_batch[:, :, 1:], gt_boxes, gt_boxes_3d, gt_labels)
##########################
# subsampler
##########################
cls_criterion = None
pos_indicator = rcnn_reg_weights > 0
indicator = rcnn_cls_weights > 0
# subsample from all
# shape (N,M)
batch_sampled_mask = self.sampler.subsample_batch(
self.rcnn_batch_size,
pos_indicator,
indicator=indicator,
criterion=cls_criterion)
rcnn_cls_weights = rcnn_cls_weights[batch_sampled_mask]
rcnn_reg_weights = rcnn_reg_weights[batch_sampled_mask]
rcnn_reg_weights_3d = rcnn_reg_weights_3d[batch_sampled_mask]
num_cls_coeff = (rcnn_cls_weights > 0).sum(dim=-1)
num_reg_coeff = (rcnn_reg_weights > 0).sum(dim=-1)
# check
assert num_cls_coeff, 'bug happens'
# assert num_reg_coeff, 'bug happens'
if num_reg_coeff == 0:
num_reg_coeff = torch.ones_like(num_reg_coeff)
prediction_dict[
'rcnn_cls_weights'] = rcnn_cls_weights / num_cls_coeff.float()
prediction_dict[
'rcnn_reg_weights'] = rcnn_reg_weights / num_reg_coeff.float()
prediction_dict[
'rcnn_reg_weights_3d'] = rcnn_reg_weights_3d / num_reg_coeff.float(
)
prediction_dict['rcnn_cls_targets'] = rcnn_cls_targets[
batch_sampled_mask]
prediction_dict['rcnn_reg_targets'] = rcnn_reg_targets[
batch_sampled_mask]
prediction_dict['rcnn_reg_targets_3d'] = rcnn_reg_targets_3d[
batch_sampled_mask]
# update rois_batch
prediction_dict['rois_batch'] = rois_batch[batch_sampled_mask].view(
rois_batch.shape[0], -1, 5)
def loss(self, prediction_dict, feed_dict):
"""
assign proposals label and subsample from them
Then calculate loss
"""
loss_dict = {}
if self.train_2d:
# submodule loss
loss_dict.update(self.rpn_model.loss(prediction_dict, feed_dict))
# targets and weights
rcnn_cls_weights = prediction_dict['rcnn_cls_weights']
rcnn_reg_weights = prediction_dict['rcnn_reg_weights']
rcnn_cls_targets = prediction_dict['rcnn_cls_targets']
rcnn_reg_targets = prediction_dict['rcnn_reg_targets']
# classification loss
rcnn_cls_scores = prediction_dict['rcnn_cls_scores']
rcnn_cls_loss = self.rcnn_cls_loss(rcnn_cls_scores,
rcnn_cls_targets)
rcnn_cls_loss *= rcnn_cls_weights
rcnn_cls_loss = rcnn_cls_loss.sum(dim=-1)
# bounding box regression L1 loss
rcnn_bbox_preds = prediction_dict['rcnn_bbox_preds']
rcnn_bbox_loss = self.rcnn_bbox_loss(rcnn_bbox_preds,
rcnn_reg_targets).sum(dim=-1)
rcnn_bbox_loss *= rcnn_reg_weights
rcnn_bbox_loss = rcnn_bbox_loss.sum(dim=-1)
loss_dict['rcnn_cls_loss'] = rcnn_cls_loss
loss_dict['rcnn_bbox_loss'] = rcnn_bbox_loss
######################################
# 3d loss
######################################
rcnn_reg_weights_3d = prediction_dict['rcnn_reg_weights_3d']
rcnn_reg_targets_3d = prediction_dict['rcnn_reg_targets_3d']
rcnn_3d = prediction_dict['rcnn_3d']
if self.train_3d:
rcnn_3d_loss = self.rcnn_bbox_loss(rcnn_3d,
rcnn_reg_targets_3d).sum(dim=-1)
rcnn_3d_loss = rcnn_3d_loss * rcnn_reg_weights_3d
# dims
# rcnn_3d_loss_dims = self.rcnn_bbox_loss(
# rcnn_3d[:, :3], rcnn_reg_targets_3d[:, :3]).sum(dim=-1)
# # angles
# res = self.rcnn_3d_loss(rcnn_3d[:, 3:], rcnn_reg_targets_3d[:, 3:])
# for res_loss_key in res:
# tmp = res[res_loss_key] * rcnn_reg_weights_3d
# res[res_loss_key] = tmp.sum(dim=-1)
# loss_dict.update(res)
# rcnn_3d_loss = rcnn_3d_loss_dims * rcnn_reg_weights_3d
# rcnn_3d_loss = rcnn_3d_loss.sum(dim=-1)
loss_dict['rcnn_3d_loss'] = rcnn_3d_loss
# stats of orients
# cls_orient_preds = rcnn_3d[:, 3:5]
# cls_orient = rcnn_reg_targets_3d[:, 3]
# _, cls_orient_preds_argmax = torch.max(cls_orient_preds, dim=-1)
# orient_tp_mask = cls_orient.type_as(
# cls_orient_preds_argmax) == cls_orient_preds_argmax
# mask = (rcnn_reg_weights_3d > 0) & (rcnn_reg_targets_3d[:, 3] > -1)
# orient_tp_mask = orient_tp_mask[mask]
# orient_tp_num = orient_tp_mask.int().sum().item()
# orient_all_num = orient_tp_mask.numel()
# # depth ind ap
# depth_ind_preds = rcnn_3d[:, 7:7 + 11]
# depth_ind_targets = rcnn_reg_targets_3d[:, 6]
# _, depth_ind_preds_argmax = torch.max(depth_ind_preds, dim=-1)
# depth_ind_mask = depth_ind_targets.type_as(
# depth_ind_preds_argmax) == depth_ind_preds_argmax
# depth_ind_mask = depth_ind_mask[rcnn_reg_weights_3d > 0]
# depth_ind_tp_num = depth_ind_mask.int().sum().item()
# depth_ind_all_num = depth_ind_mask.numel()
# # this mask is converted from reg methods
# r_2ds_dis = torch.zeros_like(cls_orient)
# r_2ds = rcnn_3d[:, 10]
# r_2ds_dis[r_2ds < 0.5] = 0
# r_2ds_dis[r_2ds > 0.5] = 1
# orient_tp_mask2 = (r_2ds_dis == cls_orient)
# orient_tp_mask2 = orient_tp_mask2[mask]
# orient_tp_num2 = orient_tp_mask2.int().sum().item()
# # cls_orient_4s
# cls_orient_4s_pred = rcnn_3d[:, 11:15]
# _, cls_orient_4s_inds = torch.max(cls_orient_4s_pred, dim=-1)
# cls_orient_4s = rcnn_reg_targets_3d[:, 10]
# # cls_orient_4s_inds[(cls_orient_4s_inds == 0) | (cls_orient_4s_inds == 2
# # )] = 1
# # cls_orient_4s_inds[(cls_orient_4s_inds == 1) | (cls_orient_4s_inds == 3
# # )] = 0
# orient_tp_mask3 = cls_orient_4s_inds.type_as(
# cls_orient_4s) == cls_orient_4s
# mask3 = (rcnn_reg_weights_3d > 0)
# orient_tp_mask3 = orient_tp_mask3[mask3]
# orient_4s_tp_num = orient_tp_mask3.int().sum().item()
# orient_all_num3 = orient_tp_mask3.numel()
# # test cls_orient_4s(check label)
# cls_orient_2s_inds = torch.zeros_like(cls_orient)
# cls_orient_2s_inds[(cls_orient_4s == 0) | (cls_orient_4s == 2)] = 1
# cls_orient_2s_inds[(cls_orient_4s == 1) | (cls_orient_4s == 3)] = 0
# cls_orient_2s_mask = (cls_orient_2s_inds == cls_orient)
# cls_orient_2s_mask = cls_orient_2s_mask[mask]
# cls_orient_2s_tp_num = cls_orient_2s_mask.int().sum().item()
# cls_orient_2s_all_num = cls_orient_2s_mask.numel()
# # center_orient
# center_orients_preds = rcnn_3d[:, 15:17]
# _, center_orients_inds = torch.max(center_orients_preds, dim=-1)
# center_orients = rcnn_reg_targets_3d[:, 11]
# orient_tp_mask4 = center_orients.type_as(
# center_orients_inds) == center_orients_inds
# mask4 = (rcnn_reg_weights_3d > 0) & (center_orients > -1)
# orient_tp_mask4 = orient_tp_mask4[mask4]
# orient_tp_num4 = orient_tp_mask4.int().sum().item()
# orient_all_num4 = orient_tp_mask4.numel()
# store all stats in target assigner
# self.target_assigner.stat.update({
# # 'angle_num_tp': torch.tensor(0),
# # 'angle_num_all': 1,
# # stats of orient
# 'orient_tp_num': orient_tp_num,
# # 'orient_tp_num2': orient_tp_num2,
# # 'orient_tp_num3': orient_4s_tp_num,
# # 'orient_all_num3': orient_all_num3,
# # 'orient_pr': orient_pr,
# 'orient_all_num': orient_all_num,
# # 'orient_tp_num4': orient_tp_num4,
# # 'orient_all_num4': orient_all_num4,
# 'cls_orient_2s_all_num': depth_ind_all_num,
# 'cls_orient_2s_tp_num': depth_ind_tp_num
# })
return loss_dict
class Mono3DFinalAngleFasterRCNN(Model):
def forward(self, feed_dict):
self.target_assigner.bbox_coder_3d.mean_dims = feed_dict['mean_dims']
prediction_dict = {}
# base model
base_feat = self.feature_extractor.first_stage_feature(
feed_dict['img'])
feed_dict.update({'base_feat': base_feat})
# rpn model
prediction_dict.update(self.rpn_model.forward(feed_dict))
if self.training:
self.pre_subsample(prediction_dict, feed_dict)
rois_batch = prediction_dict['rois_batch']
# note here base_feat (N,C,H,W),rois_batch (N,num_proposals,5)
pooled_feat = self.rcnn_pooling(base_feat, rois_batch.view(-1, 5))
# shape(N,C,1,1)
second_pooled_feat = self.feature_extractor.second_stage_feature(
pooled_feat)
second_pooled_feat = second_pooled_feat.mean(3).mean(2)
rcnn_cls_scores = self.rcnn_cls_preds(second_pooled_feat)
rcnn_bbox_preds = self.rcnn_bbox_preds(second_pooled_feat)
rcnn_3d = self.rcnn_3d_pred(second_pooled_feat)
rcnn_cls_probs = F.softmax(rcnn_cls_scores, dim=1)
prediction_dict['rcnn_cls_probs'] = rcnn_cls_probs
prediction_dict['rcnn_bbox_preds'] = rcnn_bbox_preds
prediction_dict['rcnn_cls_scores'] = rcnn_cls_scores
# used for track
proposals_order = prediction_dict['proposals_order']
prediction_dict['second_rpn_anchors'] = prediction_dict['anchors'][
proposals_order]
###################################
# 3d training
###################################
prediction_dict['rcnn_3d'] = rcnn_3d
if not self.training:
if self.class_agnostic_3d:
orient = rcnn_3d[:, 3:]
dims = rcnn_3d[:, :3]
else:
orient = rcnn_3d[:, 3 * self.n_classes:]
dims = rcnn_3d[:, :3 * self.n_classes]
angles = orient.view(-1, self.num_bins, 4)
angles_cls = F.softmax(angles[:, :, :2], dim=-1)
_, angles_cls_argmax = torch.max(angles_cls[:, :, 1], dim=-1)
row = torch.arange(
0, angles_cls_argmax.shape[0]).type_as(angles_cls_argmax)
angles_oritations = angles[:, :, 2:][row, angles_cls_argmax]
rcnn_3d = torch.cat([dims, angles_oritations], dim=-1)
# import ipdb
# ipdb.set_trace()
rcnn_3d = self.target_assigner.bbox_coder_3d.decode_batch_angle(
rcnn_3d, self.rcnn_3d_loss.bin_centers[angles_cls_argmax])
prediction_dict['rcnn_3d'] = rcnn_3d
return prediction_dict
def pre_forward(self):
pass
def init_weights(self):
# submodule init weights
self.feature_extractor.init_weights()
self.rpn_model.init_weights()
Filler.normal_init(self.rcnn_cls_preds, 0, 0.01, self.truncated)
Filler.normal_init(self.rcnn_bbox_preds, 0, 0.001, self.truncated)
def init_modules(self):
self.feature_extractor = ResNetFeatureExtractor(
self.feature_extractor_config)
self.rpn_model = RPNModel(self.rpn_config)
if self.pooling_mode == 'align':
self.rcnn_pooling = ROIAlign((self.pooling_size,
self.pooling_size), 1.0 / 16.0, 2)
elif self.pooling_mode == 'ps':
self.rcnn_pooling = PSRoIPool(7, 7, 1.0 / 16, 7, self.n_classes)
elif self.pooling_mode == 'psalign':
raise NotImplementedError('have not implemented yet!')
elif self.pooling_mode == 'deformable_psalign':
raise NotImplementedError('have not implemented yet!')
# self.rcnn_cls_pred = nn.Conv2d(2048, self.n_classes, 3, 1, 1)
self.rcnn_cls_preds = nn.Linear(2048, self.n_classes)
if self.reduce:
in_channels = 2048
else:
in_channels = 2048 * 4 * 4
if self.class_agnostic:
self.rcnn_bbox_preds = nn.Linear(in_channels, 4)
else:
self.rcnn_bbox_preds = nn.Linear(in_channels, 4 * self.n_classes)
# loss module
if self.use_focal_loss:
self.rcnn_cls_loss = FocalLoss(self.n_classes)
else:
self.rcnn_cls_loss = functools.partial(
F.cross_entropy, reduce=False)
self.rcnn_bbox_loss = nn.modules.SmoothL1Loss(reduce=False)
# self.rcnn_3d_pred = nn.Linear(c, 3 + 4 + 11 + 2 + 1)
if self.class_agnostic_3d:
self.rcnn_3d_pred = nn.Linear(in_channels, 3 + 4 * self.num_bins)
else:
self.rcnn_3d_pred = nn.Linear(
in_channels, 3 * self.n_classes + 4 * self.num_bins)
# self.rcnn_3d_loss = OrientationLoss(split_loss=True)
self.rcnn_3d_loss = MultiBinLoss(num_bins=self.num_bins)
def init_param(self, model_config):
classes = model_config['classes']
self.classes = classes
self.n_classes = len(classes) + 1
self.class_agnostic = model_config['class_agnostic']
self.pooling_size = model_config['pooling_size']
self.pooling_mode = model_config['pooling_mode']
self.class_agnostic_3d = model_config['class_agnostic_3d']
self.crop_resize_with_max_pool = model_config[
'crop_resize_with_max_pool']
self.truncated = model_config['truncated']
self.use_focal_loss = model_config['use_focal_loss']
self.subsample_twice = model_config['subsample_twice']
self.rcnn_batch_size = model_config['rcnn_batch_size']
# some submodule config
self.feature_extractor_config = model_config['feature_extractor_config']
self.rpn_config = model_config['rpn_config']
# sampler
self.sampler = BalancedSampler(model_config['sampler_config'])
# self.reduce = model_config.get('reduce')
self.reduce = True
self.visualizer = FeatVisualizer()
self.num_bins = 4
# more accurate bbox for 3d prediction
# if self.train_3d:
# fg_thresh = 0.6
# else:
# fg_thresh = 0.5
# model_config['target_assigner_config']['fg_thresh'] = fg_thresh
# assigner
self.target_assigner = TargetAssigner(
model_config['target_assigner_config'])
self.profiler = Profiler()
self.h_cat = False
def pre_subsample(self, prediction_dict, feed_dict):
rois_batch = prediction_dict['rois_batch']
gt_boxes = feed_dict['gt_boxes']
gt_labels = feed_dict['gt_labels']
# gt_boxes_3d = feed_dict['coords']
# dims_2d = feed_dict['dims_2d']
# use local angle
# oritations = feed_dict['local_angle_oritation']
local_angle = feed_dict['local_angle']
# shape(N,7)
gt_boxes_3d = feed_dict['gt_boxes_3d']
# orient
# here just concat them
# dims and their projection
gt_boxes_3d = torch.cat([gt_boxes_3d[:, :, :3], local_angle], dim=-1)
##########################
# assigner
##########################
rcnn_cls_targets, rcnn_reg_targets,\
rcnn_cls_weights, rcnn_reg_weights,\
rcnn_reg_targets_3d, rcnn_reg_weights_3d = self.target_assigner.assign(
rois_batch[:, :, 1:], gt_boxes, gt_boxes_3d, gt_labels )
##########################
# subsampler
##########################
cls_criterion = None
pos_indicator = rcnn_reg_weights > 0
indicator = rcnn_cls_weights > 0
# subsample from all
# shape (N,M)
batch_sampled_mask = self.sampler.subsample_batch(
self.rcnn_batch_size,
pos_indicator,
indicator=indicator,
criterion=cls_criterion)
rcnn_cls_weights = rcnn_cls_weights[batch_sampled_mask]
rcnn_reg_weights = rcnn_reg_weights[batch_sampled_mask]
rcnn_reg_weights_3d = rcnn_reg_weights_3d[batch_sampled_mask]
num_cls_coeff = (rcnn_cls_weights > 0).sum(dim=-1)
num_reg_coeff = (rcnn_reg_weights > 0).sum(dim=-1)
# check
assert num_cls_coeff, 'bug happens'
assert num_reg_coeff, 'bug happens'
prediction_dict[
'rcnn_cls_weights'] = rcnn_cls_weights / num_cls_coeff.float()
prediction_dict[
'rcnn_reg_weights'] = rcnn_reg_weights / num_reg_coeff.float()
prediction_dict[
'rcnn_reg_weights_3d'] = rcnn_reg_weights_3d / num_reg_coeff.float()
prediction_dict['rcnn_cls_targets'] = rcnn_cls_targets[
batch_sampled_mask]
prediction_dict['rcnn_reg_targets'] = rcnn_reg_targets[
batch_sampled_mask]
prediction_dict['rcnn_reg_targets_3d'] = rcnn_reg_targets_3d[
batch_sampled_mask]
# update rois_batch
prediction_dict['rois_batch'] = rois_batch[batch_sampled_mask].view(
rois_batch.shape[0], -1, 5)
def squeeze_bbox_preds(self, rcnn_bbox_preds, rcnn_cls_targets, out_c=4):
"""
squeeze rcnn_bbox_preds from shape (N, 4 * num_classes) to shape (N, 4)
Args:
rcnn_bbox_preds: shape(N, num_classes, 4)
rcnn_cls_targets: shape(N, 1)
"""
rcnn_bbox_preds = rcnn_bbox_preds.view(-1, self.n_classes, out_c)
batch_size = rcnn_bbox_preds.shape[0]
offset = torch.arange(0, batch_size) * rcnn_bbox_preds.size(1)
rcnn_cls_targets = rcnn_cls_targets + offset.type_as(rcnn_cls_targets)
rcnn_bbox_preds = rcnn_bbox_preds.contiguous().view(
-1, out_c)[rcnn_cls_targets]
return rcnn_bbox_preds
def loss(self, prediction_dict, feed_dict):
"""
assign proposals label and subsample from them
Then calculate loss
"""
# import ipdb
# ipdb.set_trace()
loss_dict = {}
# submodule loss
loss_dict.update(self.rpn_model.loss(prediction_dict, feed_dict))
# targets and weights
rcnn_cls_weights = prediction_dict['rcnn_cls_weights']
rcnn_reg_weights = prediction_dict['rcnn_reg_weights']
rcnn_cls_targets = prediction_dict['rcnn_cls_targets']
rcnn_reg_targets = prediction_dict['rcnn_reg_targets']
# classification loss
rcnn_cls_scores = prediction_dict['rcnn_cls_scores']
rcnn_cls_loss = self.rcnn_cls_loss(rcnn_cls_scores, rcnn_cls_targets)
rcnn_cls_loss *= rcnn_cls_weights
rcnn_cls_loss = rcnn_cls_loss.sum(dim=-1)
# bounding box regression L1 loss
rcnn_bbox_preds = prediction_dict['rcnn_bbox_preds']
#
if not self.class_agnostic:
rcnn_bbox_preds = self.squeeze_bbox_preds(rcnn_bbox_preds,
rcnn_cls_targets)
rcnn_bbox_loss = self.rcnn_bbox_loss(rcnn_bbox_preds,
rcnn_reg_targets).sum(dim=-1)
rcnn_bbox_loss *= rcnn_reg_weights
rcnn_bbox_loss = rcnn_bbox_loss.sum(dim=-1)
loss_dict['rcnn_cls_loss'] = rcnn_cls_loss
loss_dict['rcnn_bbox_loss'] = rcnn_bbox_loss
######################################
# 3d loss
######################################
rcnn_reg_weights_3d = prediction_dict['rcnn_reg_weights_3d']
rcnn_reg_targets_3d = prediction_dict['rcnn_reg_targets_3d']
rcnn_3d = prediction_dict['rcnn_3d']
if not self.class_agnostic_3d:
dims_pred = rcnn_3d[:, :3 * self.n_classes]
dims_pred = self.squeeze_bbox_preds(dims_pred, rcnn_cls_targets, 3)
orient_pred = rcnn_3d[:, 3 * self.n_classes:]
else:
dims_pred = rcnn_3d[:, :3]
orient_pred = rcnn_3d[:, 3:]
# dims
rcnn_3d_loss_dims = self.rcnn_bbox_loss(
dims_pred, rcnn_reg_targets_3d[:, :3]).sum(dim=-1)
# angles
rcnn_angle_loss, angle_tp_mask = self.rcnn_3d_loss(
orient_pred, rcnn_reg_targets_3d[:, 3:])
# angles
# res = self.rcnn_3d_loss(rcnn_3d[:, 3:], rcnn_reg_targets_3d[:, 3:6])
# for res_loss_key in res:
# tmp = res[res_loss_key] * rcnn_reg_weights_3d
# res[res_loss_key] = tmp.sum(dim=-1)
# loss_dict.update(res)
rcnn_3d_loss = rcnn_3d_loss_dims * rcnn_reg_weights_3d
rcnn_3d_loss = rcnn_3d_loss.sum(dim=-1)
rcnn_angle_loss = rcnn_angle_loss * rcnn_reg_weights_3d
rcnn_angle_loss = rcnn_angle_loss.sum(dim=-1)
loss_dict['rcnn_3d_loss'] = rcnn_3d_loss
loss_dict['rcnn_angle_loss'] = rcnn_angle_loss
# stats of orients
angle_tp_mask = angle_tp_mask[rcnn_reg_weights_3d > 0]
angles_tp_num = angle_tp_mask.int().sum().item()
angles_all_num = angle_tp_mask.numel()
# cls_orient_preds = rcnn_3d[:, 3:5]
# cls_orient = rcnn_reg_targets_3d[:, 3]
# _, cls_orient_preds_argmax = torch.max(cls_orient_preds, dim=-1)
# orient_tp_mask = cls_orient.type_as(
# cls_orient_preds_argmax) == cls_orient_preds_argmax
# mask = (rcnn_reg_weights_3d > 0) & (rcnn_reg_targets_3d[:, 3] > -1)
# orient_tp_mask = orient_tp_mask[mask]
# orient_tp_num = orient_tp_mask.int().sum().item()
# orient_all_num = orient_tp_mask.numel()
# gt_boxes_proj = feed_dict['gt_boxes_proj']
self.target_assigner.stat.update({
'cls_orient_2s_all_num': angles_all_num,
'cls_orient_2s_tp_num': angles_tp_num
# 'angle_num_tp': torch.tensor(0),
# 'angle_num_all': 1,
# stats of orient
# 'orient_tp_num': orient_tp_num,
# 'orient_tp_num2': orient_tp_num2,
# 'orient_tp_num3': orient_tp_num3,
# 'orient_all_num3': orient_all_num3,
# 'orient_pr': orient_pr,
# 'orient_all_num': orient_all_num,
# 'orient_all_num3': orient_all_num3,
# 'orient_tp_num4': orient_tp_num4,
# 'orient_all_num4': orient_all_num4,
# 'cls_orient_2s_all_num': depth_ind_all_num,
# 'cls_orient_2s_tp_num': depth_ind_tp_num
})
return loss_dict
class DoubleIoUFasterRCNN(Model):
def forward(self, feed_dict):
prediction_dict = {}
# base model
base_feat = self.feature_extractor.first_stage_feature(
feed_dict['img'])
feed_dict.update({'base_feat': base_feat})
self.add_feat('base_feat', base_feat)
# batch_size = base_feat.shape[0]
# rpn model
prediction_dict.update(self.rpn_model.forward(feed_dict))
# proposals = prediction_dict['proposals_batch']
# shape(N,num_proposals,5)
# pre subsample for reduce consume of memory
if self.training:
self.pre_subsample(prediction_dict, feed_dict)
rois_batch = prediction_dict['rois_batch']
# note here base_feat (N,C,H,W),rois_batch (N,num_proposals,5)
pooled_feat = self.rcnn_pooling(base_feat, rois_batch.view(-1, 5))
# shape(N,C,1,1)
pooled_feat_reg = self.feature_extractor.second_stage_feature(
pooled_feat)
# shape(N,C)
# if self.reduce:
pooled_feat_reg = pooled_feat_reg.mean(3).mean(2)
# else:
# pooled_feat = pooled_feat.view(self.rcnn_batch_size, -1)
rcnn_bbox_preds = self.rcnn_bbox_pred(pooled_feat_reg)
# rcnn_cls_scores = self.rcnn_cls_pred(pooled_feat)
# rcnn_cls_probs = F.softmax(rcnn_cls_scores, dim=1)
# prediction_dict['rcnn_cls_probs'] = rcnn_cls_probs
prediction_dict['rcnn_bbox_preds'] = rcnn_bbox_preds
# prediction_dict['rcnn_cls_scores'] = rcnn_cls_scores
# used for track
proposals_order = prediction_dict['proposals_order']
prediction_dict['second_rpn_anchors'] = prediction_dict['anchors'][
proposals_order]
prediction_dict['rcnn_cls_probs'] = prediction_dict['rpn_cls_probs'][
0][proposals_order]
return prediction_dict
# def rcnn_cls_pred(pooled_feat)
def init_weights(self):
# submodule init weights
self.feature_extractor.init_weights()
self.rpn_model.init_weights()
Filler.normal_init(self.rcnn_cls_pred, 0, 0.01, self.truncated)
Filler.normal_init(self.rcnn_bbox_pred, 0, 0.001, self.truncated)
def init_modules(self):
self.feature_extractor = ResNetFeatureExtractor(
self.feature_extractor_config)
self.rpn_model = RPNModel(self.rpn_config)
if self.pooling_mode == 'align':
self.rcnn_pooling = RoIAlignAvg(self.pooling_size,
self.pooling_size, 1.0 / 16.0)
elif self.pooling_mode == 'ps':
self.rcnn_pooling = PSRoIPool(7, 7, 1.0 / 16, 7, self.n_classes)
elif self.pooling_mode == 'psalign':
raise NotImplementedError('have not implemented yet!')
elif self.pooling_mode == 'deformable_psalign':
raise NotImplementedError('have not implemented yet!')
self.rcnn_cls_pred = nn.Linear(2048, self.n_classes)
if self.reduce:
in_channels = 2048
else:
in_channels = 2048 * 4 * 4
if self.class_agnostic:
self.rcnn_bbox_pred = nn.Linear(in_channels, 4)
else:
self.rcnn_bbox_pred = nn.Linear(in_channels, 4 * self.n_classes)
# loss module
if self.use_focal_loss:
self.rcnn_cls_loss = FocalLoss(2)
else:
self.rcnn_cls_loss = functools.partial(F.cross_entropy,
reduce=False)
self.rcnn_bbox_loss = nn.modules.SmoothL1Loss(reduce=False)
def init_param(self, model_config):
classes = model_config['classes']
self.classes = classes
self.n_classes = len(classes)
self.class_agnostic = model_config['class_agnostic']
self.pooling_size = model_config['pooling_size']
self.pooling_mode = model_config['pooling_mode']
self.crop_resize_with_max_pool = model_config[
'crop_resize_with_max_pool']
self.truncated = model_config['truncated']
self.use_focal_loss = model_config['use_focal_loss']
self.subsample_twice = model_config['subsample_twice']
self.rcnn_batch_size = model_config['rcnn_batch_size']
# some submodule config
self.feature_extractor_config = model_config[
'feature_extractor_config']
self.rpn_config = model_config['rpn_config']
# assigner
self.target_assigner = TargetAssigner(
model_config['target_assigner_config'])
# sampler
self.sampler = BalancedSampler(model_config['sampler_config'])
# self.reduce = model_config.get('reduce')
self.reduce = True
def pre_subsample(self, prediction_dict, feed_dict):
rois_batch = prediction_dict['rois_batch']
gt_boxes = feed_dict['gt_boxes']
gt_labels = feed_dict['gt_labels']
##########################
# assigner
##########################
# import ipdb
# ipdb.set_trace()
rcnn_cls_targets, rcnn_reg_targets, rcnn_cls_weights, rcnn_reg_weights = self.target_assigner.assign(
rois_batch[:, :, 1:], gt_boxes, gt_labels)
##########################
# subsampler
##########################
cls_criterion = None
pos_indicator = rcnn_reg_weights > 0
# indicator = rcnn_cls_weights > 0
indicator = None
# subsample from all
# shape (N,M)
batch_sampled_mask = self.sampler.subsample_batch(
self.rcnn_batch_size,
pos_indicator,
indicator=indicator,
criterion=cls_criterion)
rcnn_cls_weights = rcnn_cls_weights[batch_sampled_mask]
rcnn_reg_weights = rcnn_reg_weights[batch_sampled_mask]
# num_cls_coeff = (rcnn_cls_weights > 0).sum(dim=-1)
num_reg_coeff = (rcnn_reg_weights > 0).sum(dim=-1)
# check
# assert num_cls_coeff, 'bug happens'
assert num_reg_coeff, 'bug happens'
# prediction_dict[
# 'rcnn_cls_weights'] = rcnn_cls_weights / num_cls_coeff.float()
prediction_dict[
'rcnn_reg_weights'] = rcnn_reg_weights / num_reg_coeff.float()
# prediction_dict['rcnn_cls_targets'] = rcnn_cls_targets[
# batch_sampled_mask]
prediction_dict['rcnn_reg_targets'] = rcnn_reg_targets[
batch_sampled_mask]
# update rois_batch
prediction_dict['rois_batch'] = rois_batch[batch_sampled_mask].view(
rois_batch.shape[0], -1, 5)
if not self.training:
# used for track
proposals_order = prediction_dict['proposals_order']
prediction_dict['proposals_order'] = proposals_order[
batch_sampled_mask]
def loss(self, prediction_dict, feed_dict):
"""
assign proposals label and subsample from them
Then calculate loss
"""
loss_dict = {}
# submodule loss
loss_dict.update(self.rpn_model.loss(prediction_dict, feed_dict))
# targets and weights
# rcnn_cls_weights = prediction_dict['rcnn_cls_weights']
rcnn_reg_weights = prediction_dict['rcnn_reg_weights']
# rcnn_cls_targets = prediction_dict['rcnn_cls_targets']
rcnn_reg_targets = prediction_dict['rcnn_reg_targets']
# classification loss
# rcnn_cls_scores = prediction_dict['rcnn_cls_scores']
# rcnn_cls_loss = self.rcnn_cls_loss(rcnn_cls_scores, rcnn_cls_targets)
# rcnn_cls_loss *= rcnn_cls_weights
# rcnn_cls_loss = rcnn_cls_loss.sum(dim=-1)
# bounding box regression L1 loss
rcnn_bbox_preds = prediction_dict['rcnn_bbox_preds']
rcnn_bbox_loss = self.rcnn_bbox_loss(rcnn_bbox_preds,
rcnn_reg_targets).sum(dim=-1)
rcnn_bbox_loss *= rcnn_reg_weights
# rcnn_bbox_loss *= rcnn_reg_weights
rcnn_bbox_loss = rcnn_bbox_loss.sum(dim=-1)
# loss weights has no gradients
# loss_dict['rcnn_cls_loss'] = rcnn_cls_loss
loss_dict['rcnn_bbox_loss'] = rcnn_bbox_loss
# add rcnn_cls_targets to get the statics of rpn
# loss_dict['rcnn_cls_targets'] = rcnn_cls_targets
return loss_dict
class ThreeIoUFasterRCNN(Model):
def forward(self, feed_dict):
# import ipdb
# ipdb.set_trace()
prediction_dict = {}
# base model
base_feat = self.feature_extractor.first_stage_feature(
feed_dict['img'])
feed_dict.update({'base_feat': base_feat})
# batch_size = base_feat.shape[0]
# rpn model
prediction_dict.update(self.rpn_model.forward(feed_dict))
# proposals = prediction_dict['proposals_batch']
# shape(N,num_proposals,5)
# pre subsample for reduce consume of memory
if self.training:
self.pre_subsample(prediction_dict, feed_dict)
rois_batch = prediction_dict['rois_batch']
# note here base_feat (N,C,H,W),rois_batch (N,num_proposals,5)
pooled_feat = self.rcnn_pooling(base_feat, rois_batch.view(-1, 5))
# shape(N,C,1,1)
pooled_feat = self.feature_extractor.second_stage_feature(pooled_feat)
########################################
# semantic map
########################################
rcnn_cls_scores_map = self.rcnn_cls_pred(pooled_feat)
rcnn_cls_scores = rcnn_cls_scores_map.mean(3).mean(2)
saliency_map = F.softmax(rcnn_cls_scores_map, dim=1)
rcnn_cls_probs = F.softmax(rcnn_cls_scores, dim=1)
# shape(N,C)
rcnn_bbox_feat = pooled_feat * saliency_map[:, 1:, :, :]
rcnn_bbox_feat = rcnn_bbox_feat.mean(3).mean(2)
rcnn_bbox_preds = self.rcnn_bbox_pred(rcnn_bbox_feat)
# shape(N,C)
# pooled_feat = pooled_feat.mean(3).mean(2)
# rcnn_bbox_preds = self.rcnn_bbox_pred(pooled_feat)
# rcnn_cls_scores = self.rcnn_cls_pred(pooled_feat)
# rcnn_cls_probs = F.softmax(rcnn_cls_scores, dim=1)
prediction_dict['rcnn_cls_probs'] = rcnn_cls_probs
prediction_dict['rcnn_bbox_preds'] = rcnn_bbox_preds
prediction_dict['rcnn_cls_scores'] = rcnn_cls_scores
# used for track
proposals_order = prediction_dict['proposals_order']
prediction_dict['second_rpn_anchors'] = prediction_dict['anchors'][0][
proposals_order]
return prediction_dict
def init_weights(self):
# submodule init weights
self.feature_extractor.init_weights()
self.rpn_model.init_weights()
Filler.normal_init(self.rcnn_cls_pred, 0, 0.01, self.truncated)
Filler.normal_init(self.rcnn_bbox_pred, 0, 0.001, self.truncated)
def init_modules(self):
self.feature_extractor = ResNetFeatureExtractor(
self.feature_extractor_config)
self.rpn_model = RPNModel(self.rpn_config)
self.rcnn_pooling = RoIAlignAvg(self.pooling_size, self.pooling_size,
1.0 / 16.0)
self.rcnn_cls_pred = nn.Conv2d(2048, self.n_classes, 3, 1, 1)
# self.rcnn_cls_pred = nn.Linear(2048, self.n_classes)
if self.class_agnostic:
self.rcnn_bbox_pred = nn.Linear(2048, 4)
else:
self.rcnn_bbox_pred = nn.Linear(2048, 4 * self.n_classes)
# loss module
# if self.use_focal_loss:
# self.rcnn_cls_loss = FocalLoss(2)
# else:
# self.rcnn_cls_loss = functools.partial(
# F.cross_entropy, reduce=False)
self.rcnn_cls_loss = nn.MSELoss(reduce=False)
self.rcnn_bbox_loss = nn.modules.SmoothL1Loss(reduce=False)
def init_param(self, model_config):
classes = model_config['classes']
self.classes = classes
self.n_classes = len(classes)
self.class_agnostic = model_config['class_agnostic']
self.pooling_size = model_config['pooling_size']
self.pooling_mode = model_config['pooling_mode']
self.crop_resize_with_max_pool = model_config[
'crop_resize_with_max_pool']
self.truncated = model_config['truncated']
self.use_focal_loss = model_config['use_focal_loss']
self.subsample_twice = model_config['subsample_twice']
self.rcnn_batch_size = model_config['rcnn_batch_size']
# some submodule config
self.feature_extractor_config = model_config[
'feature_extractor_config']
self.rpn_config = model_config['rpn_config']
# assigner
self.target_assigner = TargetAssigner(
model_config['target_assigner_config'])
# sampler
# self.bbox_sampler = DetectionSampler({'fg_fraction': 0.5})
self.bbox_sampler = HardNegativeSampler({'fg_fraction': 1})
self.iou_sampler = BalancedSampler(model_config['sampler_config'])
def pre_subsample(self, prediction_dict, feed_dict):
# import ipdb
# ipdb.set_trace()
rois_batch = prediction_dict['rois_batch']
gt_boxes = feed_dict['gt_boxes']
gt_labels = feed_dict['gt_labels']
##########################
# assigner
##########################
# import ipdb
# ipdb.set_trace()
rcnn_cls_targets, rcnn_reg_targets, rcnn_cls_weights, rcnn_reg_weights = self.target_assigner.assign(
rois_batch[:, :, 1:], gt_boxes, gt_labels)
##########################
# double subsampler
##########################
cls_criterion = None
# bbox subsample
pos_indicator = rcnn_reg_weights > 0
cls_criterion = self.target_assigner.matcher.assigned_overlaps_batch
bbox_batch_sampled_mask = self.bbox_sampler.subsample_batch(
self.rcnn_batch_size, pos_indicator, criterion=cls_criterion)
# rcnn_cls_weights = rcnn_cls_weights[bbox_batch_sampled_mask]
# num_cls_coeff = (rcnn_cls_weights > 0).sum(dim=-1)
# ignore when bbox loss is not necessary
bbox_batch_sampled_mask[rcnn_reg_weights == 0] = 0
rcnn_reg_weights = rcnn_reg_weights[bbox_batch_sampled_mask]
num_reg_coeff = (rcnn_reg_weights > 0).sum(dim=-1)
assert num_reg_coeff, 'bug happens'
# iou subsample
# balanced subsample
pos_indicator = rcnn_cls_targets > 0
iou_batch_sampled_mask = self.iou_sampler.subsample_batch(
self.rcnn_batch_size, pos_indicator)
# rcnn_cls_weights = rcnn_cls_weights[iou_batch_sampled_mask]
# num_cls_coeff = (rcnn_cls_weights > 0).sum(dim=-1)
# check
# make sure iou optimized when bbox optimized
iou_batch_sampled_mask |= bbox_batch_sampled_mask
rcnn_cls_weights = rcnn_cls_weights[iou_batch_sampled_mask]
num_cls_coeff = (rcnn_cls_weights > 0).sum(dim=-1)
assert num_cls_coeff, 'bug happens'
batch_sampled_mask = iou_batch_sampled_mask
prediction_dict[
'rcnn_cls_weights'] = rcnn_cls_weights / num_cls_coeff.float()
prediction_dict[
'rcnn_reg_weights'] = rcnn_reg_weights / num_reg_coeff.float()
prediction_dict['rcnn_cls_targets'] = rcnn_cls_targets[
iou_batch_sampled_mask]
prediction_dict['rcnn_reg_targets'] = rcnn_reg_targets[
bbox_batch_sampled_mask]
# update rois_batch
prediction_dict['rois_batch'] = rois_batch[batch_sampled_mask].view(
rois_batch.shape[0], -1, 5)
if not self.training:
# used for track
proposals_order = prediction_dict['proposals_order']
prediction_dict['proposals_order'] = proposals_order[
batch_sampled_mask]
# prediction_dict['iou_batch_sampled_mask'] = iou_batch_sampled_mask
prediction_dict['bbox_batch_sampled_mask'] = bbox_batch_sampled_mask[
batch_sampled_mask]
def loss(self, prediction_dict, feed_dict):
"""
assign proposals label and subsample from them
Then calculate loss
"""
loss_dict = {}
# submodule loss
loss_dict.update(self.rpn_model.loss(prediction_dict, feed_dict))
# targets and weights
rcnn_cls_weights = prediction_dict['rcnn_cls_weights']
rcnn_reg_weights = prediction_dict['rcnn_reg_weights']
rcnn_cls_targets = prediction_dict['rcnn_cls_targets']
rcnn_reg_targets = prediction_dict['rcnn_reg_targets']
# mask
# iou_batch_sampled_mask = prediction_dict['iou_batch_sampled_mask']
bbox_batch_sampled_mask = prediction_dict['bbox_batch_sampled_mask']
# classification loss
rcnn_cls_scores = prediction_dict['rcnn_cls_probs'][:, 1]
# exp
rcnn_cls_scores = torch.exp(rcnn_cls_scores)
rcnn_cls_targets = torch.exp(rcnn_cls_targets)
rcnn_cls_loss = self.rcnn_cls_loss(rcnn_cls_scores, rcnn_cls_targets)
rcnn_cls_loss *= rcnn_cls_weights
rcnn_cls_loss = rcnn_cls_loss.sum(dim=-1)
# bounding box regression L1 loss
rcnn_bbox_preds = prediction_dict['rcnn_bbox_preds']
rcnn_bbox_preds = rcnn_bbox_preds[bbox_batch_sampled_mask]
rcnn_bbox_loss = self.rcnn_bbox_loss(rcnn_bbox_preds,
rcnn_reg_targets).sum(dim=-1)
rcnn_bbox_loss *= rcnn_reg_weights
# rcnn_bbox_loss *= rcnn_reg_weights
rcnn_bbox_loss = rcnn_bbox_loss.sum(dim=-1)
# loss weights has no gradients
loss_dict['rcnn_cls_loss'] = rcnn_cls_loss
loss_dict['rcnn_bbox_loss'] = rcnn_bbox_loss
return loss_dict
class RefineFasterRCNN(Model):
def forward(self, feed_dict):
prediction_dict = {}
# base model
base_feat = self.feature_extractor.first_stage_feature(
feed_dict['img'])
feed_dict.update({'base_feat': base_feat})
# batch_size = base_feat.shape[0]
# rpn model
prediction_dict.update(self.rpn_model.forward(feed_dict))
# proposals = prediction_dict['proposals_batch']
# shape(N,num_proposals,5)
# pre subsample for reduce consume of memory
if self.training:
self.pre_subsample(prediction_dict, feed_dict)
rois_batch = prediction_dict['rois_batch']
# note here base_feat (N,C,H,W),rois_batch (N,num_proposals,5)
pooled_feat = self.rcnn_pooling(base_feat, rois_batch.view(-1, 5))
# shape(N,C,1,1)
pooled_feat = self.feature_extractor.second_stage_feature(pooled_feat)
# shape(N,C)
pooled_feat = pooled_feat.mean(3).mean(2)
rcnn_bbox_preds = self.rcnn_bbox_pred(pooled_feat)
rcnn_cls_scores = self.rcnn_cls_pred(pooled_feat)
rcnn_cls_probs = F.softmax(rcnn_cls_scores, dim=1)
prediction_dict['rcnn_cls_probs'] = rcnn_cls_probs
prediction_dict['rcnn_bbox_preds'] = rcnn_bbox_preds
prediction_dict['rcnn_cls_scores'] = rcnn_cls_scores
# used for track
proposals_order = prediction_dict['proposals_order']
prediction_dict['second_rpn_anchors'] = prediction_dict['anchors'][0][
proposals_order]
return prediction_dict
def init_weights(self):
# submodule init weights
self.feature_extractor.init_weights()
self.rpn_model.init_weights()
Filler.normal_init(self.rcnn_cls_pred, 0, 0.01, self.truncated)
Filler.normal_init(self.rcnn_bbox_pred, 0, 0.001, self.truncated)
def init_modules(self):
self.feature_extractor = FeatureExtractor(
self.feature_extractor_config)
# self.rpn_model = RPNModel(self.rpn_config)
self.rpn_model = RefineRPNModel(self.rpn_config)
self.rcnn_pooling = RoIAlignAvg(self.pooling_size, self.pooling_size,
1.0 / 16.0)
self.rcnn_cls_pred = nn.Linear(2048, self.n_classes)
if self.class_agnostic:
self.rcnn_bbox_pred = nn.Linear(2048, 4)
else:
self.rcnn_bbox_pred = nn.Linear(2048, 4 * self.n_classes)
# loss module
# if self.use_focal_loss:
# self.rcnn_cls_loss = FocalLoss(2)
# else:
# self.rcnn_cls_loss = functools.partial(
# F.cross_entropy, reduce=False)
self.rcnn_cls_loss = nn.MSELoss(reduce=False)
self.rcnn_bbox_loss = nn.modules.SmoothL1Loss(reduce=False)
def init_param(self, model_config):
classes = model_config['classes']
self.classes = classes
self.n_classes = len(classes)
self.class_agnostic = model_config['class_agnostic']
self.pooling_size = model_config['pooling_size']
self.pooling_mode = model_config['pooling_mode']
self.crop_resize_with_max_pool = model_config[
'crop_resize_with_max_pool']
self.truncated = model_config['truncated']
self.use_focal_loss = model_config['use_focal_loss']
self.subsample_twice = model_config['subsample_twice']
self.rcnn_batch_size = model_config['rcnn_batch_size']
# some submodule config
self.feature_extractor_config = model_config['feature_extractor_config']
self.rpn_config = model_config['rpn_config']
# assigner
self.target_assigner = RefineTargetAssigner(
model_config['target_assigner_config'])
# sampler
# self.sampler = HardNegativeSampler(model_config['sampler_config'])
self.sampler = BalancedSampler(model_config['sampler_config'])
def pre_subsample(self, prediction_dict, feed_dict):
rois_batch = prediction_dict['rois_batch']
gt_boxes = feed_dict['gt_boxes']
gt_labels = feed_dict['gt_labels']
##########################
# assigner
##########################
# import ipdb
# ipdb.set_trace()
rcnn_cls_targets, rcnn_reg_targets, rcnn_cls_weights, rcnn_reg_weights = self.target_assigner.assign(
rois_batch[:, :, 1:], gt_boxes, gt_labels)
##########################
# subsampler
##########################
pos_indicator = rcnn_cls_targets > 0
indicator = rcnn_cls_weights > 0
# subsample from all
# shape (N,M)
batch_sampled_mask = self.sampler.subsample_batch(
self.rcnn_batch_size, pos_indicator, indicator=indicator)
rcnn_cls_weights = rcnn_cls_weights[batch_sampled_mask]
rcnn_reg_weights = rcnn_reg_weights[batch_sampled_mask]
num_cls_coeff = rcnn_cls_weights.type(torch.cuda.ByteTensor).sum(
dim=-1)
num_reg_coeff = rcnn_reg_weights.type(torch.cuda.ByteTensor).sum(
dim=-1)
# check
assert num_cls_coeff, 'bug happens'
assert num_reg_coeff, 'bug happens'
prediction_dict[
'rcnn_cls_weights'] = rcnn_cls_weights / num_cls_coeff.float()
prediction_dict[
'rcnn_reg_weights'] = rcnn_reg_weights / num_reg_coeff.float()
prediction_dict['rcnn_cls_targets'] = rcnn_cls_targets[
batch_sampled_mask]
prediction_dict['rcnn_reg_targets'] = rcnn_reg_targets[
batch_sampled_mask]
# update rois_batch
prediction_dict['rois_batch'] = rois_batch[batch_sampled_mask].view(
rois_batch.shape[0], -1, 5)
if not self.training:
# used for track
proposals_order = prediction_dict['proposals_order']
prediction_dict['proposals_order'] = proposals_order[
batch_sampled_mask]
def loss(self, prediction_dict, feed_dict):
"""
assign proposals label and subsample from them
Then calculate loss
"""
loss_dict = {}
# submodule loss
loss_dict.update(self.rpn_model.loss(prediction_dict, feed_dict))
# targets and weights
rcnn_cls_weights = prediction_dict['rcnn_cls_weights']
rcnn_reg_weights = prediction_dict['rcnn_reg_weights']
rcnn_cls_targets = prediction_dict['rcnn_cls_targets']
rcnn_reg_targets = prediction_dict['rcnn_reg_targets']
# classification loss
rcnn_cls_probs = prediction_dict['rcnn_cls_probs']
fg_rcnn_cls_probs = rcnn_cls_probs[:, 1]
# exp
fg_rcnn_cls_probs = torch.exp(fg_rcnn_cls_probs)
rcnn_cls_targets = torch.exp(rcnn_cls_targets)
# import ipdb
# ipdb.set_trace()
rcnn_cls_loss = self.rcnn_cls_loss(
fg_rcnn_cls_probs, rcnn_cls_targets.type_as(fg_rcnn_cls_probs))
rcnn_cls_loss *= rcnn_cls_weights
rcnn_cls_loss = rcnn_cls_loss.sum(dim=-1)
# bounding box regression L1 loss
rcnn_bbox_preds = prediction_dict['rcnn_bbox_preds']
rcnn_bbox_loss = self.rcnn_bbox_loss(rcnn_bbox_preds,
rcnn_reg_targets).sum(dim=-1)
rcnn_bbox_loss *= rcnn_reg_weights
# rcnn_bbox_loss *= rcnn_reg_weights
rcnn_bbox_loss = rcnn_bbox_loss.sum(dim=-1)
# loss weights has no gradients
loss_dict['rcnn_cls_loss'] = rcnn_cls_loss
loss_dict['rcnn_bbox_loss'] = rcnn_bbox_loss
# add rcnn_cls_targets to get the statics of rpn
loss_dict['rcnn_cls_targets'] = rcnn_cls_targets
return loss_dict
class SemanticFasterRCNN(Model):
def forward(self, feed_dict):
# import ipdb
# ipdb.set_trace()
prediction_dict = {}
self.profiler.start('base_model')
# base model
base_feat = self.feature_extractor.first_stage_feature(
feed_dict['img'])
feed_dict.update({'base_feat': base_feat})
self.profiler.end('base_model')
# batch_size = base_feat.shape[0]
self.profiler.start('rpn')
# rpn model
prediction_dict.update(self.rpn_model.forward(feed_dict))
self.profiler.end('rpn')
# proposals = prediction_dict['proposals_batch']
# shape(N,num_proposals,5)
# pre subsample for reduce consume of memory
if self.training:
self.pre_subsample(prediction_dict, feed_dict)
rois_batch = prediction_dict['rois_batch']
self.profiler.start('roipooling')
# note here base_feat (N,C,H,W),rois_batch (N,num_proposals,5)
pooled_feat = self.rcnn_pooling(base_feat, rois_batch.view(-1, 5))
self.profiler.end('roipooling')
self.profiler.start('second_stage')
# shape(N,C,1,1)
pooled_feat = self.feature_extractor.second_stage_feature(pooled_feat)
self.profiler.end('second_stage')
# semantic map
# if self.use_self_attention:
# pooled_feat_cls = pooled_feat.mean(3).mean(2)
# rcnn_cls_scores = self.rcnn_cls_pred(pooled_feat_cls)
# rcnn_cls_probs = F.softmax(rcnn_cls_scores, dim=1)
# # self-attention
# channel_attention = self.generate_channel_attention(pooled_feat)
# spatial_attention = self.generate_spatial_attention(pooled_feat)
# pooled_feat_reg = pooled_feat * channel_attention
# pooled_feat_reg = pooled_feat * spatial_attention
# pooled_feat_reg = pooled_feat_reg.mean(3).mean(2)
# rcnn_bbox_preds = self.rcnn_bbox_pred(pooled_feat_reg)
# else:
# rcnn_cls_scores_map = self.rcnn_cls_pred(pooled_feat)
# rcnn_cls_scores = rcnn_cls_scores_map.mean(3).mean(2)
# saliency_map = F.softmax(rcnn_cls_scores_map, dim=1)
pooled_feat = pooled_feat.mean(3).mean(2)
# rcnn_cls_probs = rcnn_cls_probs_map.mean(3).mean(2)
# shape(N,C)
# rcnn_bbox_feat = pooled_feat * saliency_map[:, 1:, :, :]
# rcnn_bbox_feat = torch.cat([rcnn_bbox_feat, pooled_feat], dim=1)
# rcnn_bbox_feat = rcnn_bbox_feat.mean(3).mean(2)
# if self.use_score:
# pooled_feat =
rcnn_bbox_preds = self.rcnn_bbox_pred(pooled_feat)
rcnn_cls_scores = self.rcnn_cls_pred(pooled_feat)
rcnn_cls_probs = F.softmax(rcnn_cls_scores, dim=1)
prediction_dict['rcnn_cls_probs'] = rcnn_cls_probs
prediction_dict['rcnn_bbox_preds'] = rcnn_bbox_preds
prediction_dict['rcnn_cls_scores'] = rcnn_cls_scores
# used for track
proposals_order = prediction_dict['proposals_order']
prediction_dict['second_rpn_anchors'] = prediction_dict['anchors'][
proposals_order]
return prediction_dict
def generate_channel_attention(self, feat):
return feat.mean(3, keepdim=True).mean(2, keepdim=True)
def generate_spatial_attention(self, feat):
return self.spatial_attention(feat)
def init_weights(self):
# submodule init weights
self.feature_extractor.init_weights()
self.rpn_model.init_weights()
Filler.normal_init(self.rcnn_cls_pred, 0, 0.01, self.truncated)
Filler.normal_init(self.rcnn_bbox_pred, 0, 0.001, self.truncated)
def init_modules(self):
self.feature_extractor = ResNetFeatureExtractor(
self.feature_extractor_config)
self.rpn_model = RPNModel(self.rpn_config)
if self.pooling_mode == 'align':
self.rcnn_pooling = RoIAlignAvg(self.pooling_size,
self.pooling_size, 1.0 / 16.0)
elif self.pooling_mode == 'ps':
self.rcnn_pooling = PSRoIPool(7, 7, 1.0 / 16, 7, self.n_classes)
elif self.pooling_mode == 'psalign':
raise NotImplementedError('have not implemented yet!')
elif self.pooling_mode == 'deformable_psalign':
raise NotImplementedError('have not implemented yet!')
# if self.use_self_attention:
self.rcnn_cls_pred = nn.Linear(2048, self.n_classes)
# else:
# self.rcnn_cls_pred = nn.Conv2d(2048, self.n_classes, 3, 1, 1)
if self.class_agnostic:
self.rcnn_bbox_pred = nn.Linear(2048, 4)
# self.rcnn_bbox_pred = nn.Conv2d(2048,4,3,1,1)
else:
self.rcnn_bbox_pred = nn.Linear(2048, 4 * self.n_classes)
# loss module
if self.use_focal_loss:
self.rcnn_cls_loss = FocalLoss(self.n_classes)
else:
self.rcnn_cls_loss = functools.partial(F.cross_entropy,
reduce=False)
self.rcnn_bbox_loss = nn.modules.SmoothL1Loss(reduce=False)
# attention
if self.use_self_attention:
self.spatial_attention = nn.Conv2d(2048, 1, 3, 1, 1)
def init_param(self, model_config):
classes = model_config['classes']
self.classes = classes
# including bg
self.n_classes = len(classes) + 1
self.class_agnostic = model_config['class_agnostic']
self.pooling_size = model_config['pooling_size']
self.pooling_mode = model_config['pooling_mode']
self.crop_resize_with_max_pool = model_config[
'crop_resize_with_max_pool']
self.truncated = model_config['truncated']
self.use_focal_loss = model_config['use_focal_loss']
self.subsample_twice = model_config['subsample_twice']
self.rcnn_batch_size = model_config['rcnn_batch_size']
self.use_self_attention = model_config.get('use_self_attention')
# some submodule config
self.feature_extractor_config = model_config[
'feature_extractor_config']
self.rpn_config = model_config['rpn_config']
# assigner
self.target_assigner = TargetAssigner(
model_config['target_assigner_config'])
# sampler
self.sampler = BalancedSampler(model_config['sampler_config'])
self.profiler = Profiler()
def pre_subsample(self, prediction_dict, feed_dict):
rois_batch = prediction_dict['rois_batch']
gt_boxes = feed_dict['gt_boxes']
gt_labels = feed_dict['gt_labels']
##########################
# assigner
##########################
# import ipdb
# ipdb.set_trace()
rcnn_cls_targets, rcnn_reg_targets, rcnn_cls_weights, rcnn_reg_weights = self.target_assigner.assign(
rois_batch[:, :, 1:], gt_boxes, gt_labels)
##########################
# subsampler
##########################
cls_criterion = None
pos_indicator = rcnn_reg_weights > 0
indicator = rcnn_cls_weights > 0
# subsample from all
# shape (N,M)
batch_sampled_mask = self.sampler.subsample_batch(
self.rcnn_batch_size,
pos_indicator,
indicator=indicator,
criterion=cls_criterion)
rcnn_cls_weights = rcnn_cls_weights[batch_sampled_mask]
rcnn_reg_weights = rcnn_reg_weights[batch_sampled_mask]
num_cls_coeff = (rcnn_cls_weights > 0).sum(dim=-1)
num_reg_coeff = (rcnn_reg_weights > 0).sum(dim=-1)
# check
assert num_cls_coeff, 'bug happens'
assert num_reg_coeff, 'bug happens'
prediction_dict[
'rcnn_cls_weights'] = rcnn_cls_weights / num_cls_coeff.float()
prediction_dict[
'rcnn_reg_weights'] = rcnn_reg_weights / num_reg_coeff.float()
prediction_dict['rcnn_cls_targets'] = rcnn_cls_targets[
batch_sampled_mask]
prediction_dict['rcnn_reg_targets'] = rcnn_reg_targets[
batch_sampled_mask]
prediction_dict['fake_match'] = self.target_assigner.analyzer.match[
batch_sampled_mask]
# update rois_batch
prediction_dict['rois_batch'] = rois_batch[batch_sampled_mask].view(
rois_batch.shape[0], -1, 5)
if not self.training:
# used for track
proposals_order = prediction_dict['proposals_order']
prediction_dict['proposals_order'] = proposals_order[
batch_sampled_mask]
# def umap_reg_targets():
# """
# expand rcnn_reg_targets(shape (N, 4) to shape(N, 4 * num_classes))
# """
# pass
def squeeze_bbox_preds(self, rcnn_bbox_preds, rcnn_cls_targets):
"""
squeeze rcnn_bbox_preds from shape (N, 4 * num_classes) to shape (N, 4)
Args:
rcnn_bbox_preds: shape(N, num_classes, 4)
rcnn_cls_targets: shape(N, 1)
"""
rcnn_bbox_preds = rcnn_bbox_preds.view(-1, self.n_classes, 4)
batch_size = rcnn_bbox_preds.shape[0]
offset = torch.arange(0, batch_size) * rcnn_bbox_preds.size(1)
rcnn_cls_targets = rcnn_cls_targets + offset.type_as(rcnn_cls_targets)
rcnn_bbox_preds = rcnn_bbox_preds.view(-1, 4)[rcnn_cls_targets]
return rcnn_bbox_preds
def loss(self, prediction_dict, feed_dict):
"""
assign proposals label and subsample from them
Then calculate loss
"""
loss_dict = {}
# submodule loss
loss_dict.update(self.rpn_model.loss(prediction_dict, feed_dict))
# targets and weights
rcnn_cls_weights = prediction_dict['rcnn_cls_weights']
rcnn_reg_weights = prediction_dict['rcnn_reg_weights']
rcnn_cls_targets = prediction_dict['rcnn_cls_targets']
rcnn_reg_targets = prediction_dict['rcnn_reg_targets']
# classification loss
rcnn_cls_scores = prediction_dict['rcnn_cls_scores']
rcnn_cls_loss = self.rcnn_cls_loss(rcnn_cls_scores, rcnn_cls_targets)
rcnn_cls_loss *= rcnn_cls_weights
rcnn_cls_loss = rcnn_cls_loss.sum(dim=-1)
# bounding box regression L1 loss
rcnn_bbox_preds = prediction_dict['rcnn_bbox_preds']
if not self.class_agnostic:
rcnn_bbox_preds = self.squeeze_bbox_preds(rcnn_bbox_preds,
rcnn_cls_targets)
rcnn_bbox_loss = self.rcnn_bbox_loss(rcnn_bbox_preds,
rcnn_reg_targets).sum(dim=-1)
rcnn_bbox_loss *= rcnn_reg_weights
# rcnn_bbox_loss *= rcnn_reg_weights
rcnn_bbox_loss = rcnn_bbox_loss.sum(dim=-1)
# loss weights has no gradients
loss_dict['rcnn_cls_loss'] = rcnn_cls_loss
loss_dict['rcnn_bbox_loss'] = rcnn_bbox_loss
# add rcnn_cls_targets to get the statics of rpn
# loss_dict['rcnn_cls_targets'] = rcnn_cls_targets
# analysis ap
rcnn_cls_probs = prediction_dict['rcnn_cls_probs']
num_gt = feed_dict['gt_labels'].numel()
fake_match = prediction_dict['fake_match']
self.target_assigner.analyzer.analyze_ap(fake_match,
rcnn_cls_probs[:, 1],
num_gt,
thresh=0.1)
return loss_dict