def _sample_pairs(roidb, im_scale, batch_idx):
"""Generate a random sample of RoIs comprising foreground and background
examples.
"""
fg_pairs_per_image = cfg.TRAIN.FG_REL_SIZE_PER_IM
pairs_per_image = int(
cfg.TRAIN.FG_REL_SIZE_PER_IM /
cfg.TRAIN.FG_REL_FRACTION) # need much more pairs since it's quadratic
max_pair_overlaps = roidb['max_pair_overlaps']
gt_pair_inds = np.where(max_pair_overlaps > 1.0 - 1e-4)[0]
fg_pair_inds = np.where((max_pair_overlaps >= cfg.TRAIN.FG_THRESH)
& (max_pair_overlaps <= 1.0 - 1e-4))[0]
fg_pairs_per_this_image = np.minimum(fg_pairs_per_image,
gt_pair_inds.size + fg_pair_inds.size)
# Sample foreground regions without replacement
if fg_pair_inds.size > 0:
fg_pair_inds = npr.choice(fg_pair_inds,
size=(fg_pairs_per_this_image -
gt_pair_inds.size),
replace=False)
fg_pair_inds = np.append(fg_pair_inds, gt_pair_inds)
# Label is the class each RoI has max overlap with
fg_prd_labels = roidb['max_prd_classes'][fg_pair_inds]
blob_dict = dict(
fg_prd_labels_int32=fg_prd_labels.astype(np.int32, copy=False))
if cfg.MODEL.USE_BG:
bg_pair_inds = np.where(
(max_pair_overlaps < cfg.TRAIN.BG_THRESH_HI))[0]
# Compute number of background RoIs to take from this image (guarding
# against there being fewer than desired)
bg_pairs_per_this_image = pairs_per_image - fg_pairs_per_this_image
bg_pairs_per_this_image = np.minimum(bg_pairs_per_this_image,
bg_pair_inds.size)
# Sample foreground regions without replacement
if bg_pair_inds.size > 0:
bg_pair_inds = npr.choice(bg_pair_inds,
size=bg_pairs_per_this_image,
replace=False)
keep_pair_inds = np.append(fg_pair_inds, bg_pair_inds)
all_prd_labels = np.zeros(keep_pair_inds.size, dtype=np.int32)
all_prd_labels[:fg_pair_inds.
size] = fg_prd_labels + 1 # class should start from 1
else:
keep_pair_inds = fg_pair_inds
all_prd_labels = fg_prd_labels
blob_dict['all_prd_labels_int32'] = all_prd_labels.astype(np.int32,
copy=False)
blob_dict['fg_size'] = np.array(
[fg_pair_inds.size], dtype=np.int32
) # this is used to check if there is at least one fg to learn
sampled_sbj_boxes = roidb['sbj_boxes'][keep_pair_inds]
sampled_obj_boxes = roidb['obj_boxes'][keep_pair_inds]
# Scale rois and format as (batch_idx, x1, y1, x2, y2)
sampled_sbj_rois = sampled_sbj_boxes * im_scale
sampled_obj_rois = sampled_obj_boxes * im_scale
repeated_batch_idx = batch_idx * blob_utils.ones(
(keep_pair_inds.shape[0], 1))
sampled_sbj_rois = np.hstack((repeated_batch_idx, sampled_sbj_rois))
sampled_obj_rois = np.hstack((repeated_batch_idx, sampled_obj_rois))
blob_dict['sbj_rois'] = sampled_sbj_rois
blob_dict['obj_rois'] = sampled_obj_rois
sampled_rel_rois = box_utils_rel.rois_union(sampled_sbj_rois,
sampled_obj_rois)
blob_dict['rel_rois'] = sampled_rel_rois
if cfg.MODEL.USE_SPATIAL_FEAT:
sampled_spt_feat = box_utils_rel.get_spt_features(
sampled_sbj_boxes, sampled_obj_boxes, roidb['width'],
roidb['height'])
blob_dict['spt_feat'] = sampled_spt_feat
if cfg.MODEL.USE_FREQ_BIAS:
sbj_labels = roidb['max_sbj_classes'][keep_pair_inds]
obj_labels = roidb['max_obj_classes'][keep_pair_inds]
blob_dict['all_sbj_labels_int32'] = sbj_labels.astype(np.int32,
copy=False)
blob_dict['all_obj_labels_int32'] = obj_labels.astype(np.int32,
copy=False)
if cfg.MODEL.USE_NODE_CONTRASTIVE_LOSS or cfg.MODEL.USE_NODE_CONTRASTIVE_SO_AWARE_LOSS or cfg.MODEL.USE_NODE_CONTRASTIVE_P_AWARE_LOSS:
nodes_per_image = cfg.MODEL.NODE_SAMPLE_SIZE
max_sbj_overlaps = roidb['max_sbj_overlaps']
max_obj_overlaps = roidb['max_obj_overlaps']
# sbj
# Here a naturally existing assumption is, each positive sbj should have at least one positive obj
sbj_pos_pair_pos_inds = np.where(
(max_pair_overlaps >= cfg.TRAIN.FG_THRESH))[0]
sbj_pos_obj_pos_pair_neg_inds = np.where(
(max_sbj_overlaps >= cfg.TRAIN.FG_THRESH)
& (max_obj_overlaps >= cfg.TRAIN.FG_THRESH)
& (max_pair_overlaps < cfg.TRAIN.BG_THRESH_HI))[0]
sbj_pos_obj_neg_pair_neg_inds = np.where(
(max_sbj_overlaps >= cfg.TRAIN.FG_THRESH)
& (max_obj_overlaps < cfg.TRAIN.FG_THRESH)
& (max_pair_overlaps < cfg.TRAIN.BG_THRESH_HI))[0]
if sbj_pos_pair_pos_inds.size > 0:
sbj_pos_pair_pos_inds = npr.choice(
sbj_pos_pair_pos_inds,
size=int(min(nodes_per_image, sbj_pos_pair_pos_inds.size)),
replace=False)
if sbj_pos_obj_pos_pair_neg_inds.size > 0:
sbj_pos_obj_pos_pair_neg_inds = npr.choice(
sbj_pos_obj_pos_pair_neg_inds,
size=int(
min(nodes_per_image, sbj_pos_obj_pos_pair_neg_inds.size)),
replace=False)
sbj_pos_pair_neg_inds = sbj_pos_obj_pos_pair_neg_inds
if nodes_per_image - sbj_pos_obj_pos_pair_neg_inds.size > 0 and sbj_pos_obj_neg_pair_neg_inds.size > 0:
sbj_pos_obj_neg_pair_neg_inds = npr.choice(
sbj_pos_obj_neg_pair_neg_inds,
size=int(
min(nodes_per_image - sbj_pos_obj_pos_pair_neg_inds.size,
sbj_pos_obj_neg_pair_neg_inds.size)),
replace=False)
sbj_pos_pair_neg_inds = np.append(sbj_pos_pair_neg_inds,
sbj_pos_obj_neg_pair_neg_inds)
sbj_pos_inds = np.append(sbj_pos_pair_pos_inds, sbj_pos_pair_neg_inds)
binary_labels_sbj_pos = np.zeros(sbj_pos_inds.size, dtype=np.int32)
binary_labels_sbj_pos[:sbj_pos_pair_pos_inds.size] = 1
blob_dict[
'binary_labels_sbj_pos_int32'] = binary_labels_sbj_pos.astype(
np.int32, copy=False)
prd_pos_labels_sbj_pos = roidb['max_prd_classes'][
sbj_pos_pair_pos_inds]
prd_labels_sbj_pos = np.zeros(sbj_pos_inds.size, dtype=np.int32)
prd_labels_sbj_pos[:sbj_pos_pair_pos_inds.
size] = prd_pos_labels_sbj_pos + 1
blob_dict['prd_labels_sbj_pos_int32'] = prd_labels_sbj_pos.astype(
np.int32, copy=False)
sbj_labels_sbj_pos = roidb['max_sbj_classes'][sbj_pos_inds] + 1
# 1. set all obj labels > 0
obj_labels_sbj_pos = roidb['max_obj_classes'][sbj_pos_inds] + 1
# 2. find those negative obj
max_obj_overlaps_sbj_pos = roidb['max_obj_overlaps'][sbj_pos_inds]
obj_neg_inds_sbj_pos = np.where(
max_obj_overlaps_sbj_pos < cfg.TRAIN.FG_THRESH)[0]
obj_labels_sbj_pos[obj_neg_inds_sbj_pos] = 0
blob_dict['sbj_labels_sbj_pos_int32'] = sbj_labels_sbj_pos.astype(
np.int32, copy=False)
blob_dict['obj_labels_sbj_pos_int32'] = obj_labels_sbj_pos.astype(
np.int32, copy=False)
# this is for freq bias in RelDN
blob_dict['sbj_labels_sbj_pos_fg_int32'] = roidb['max_sbj_classes'][
sbj_pos_inds].astype(np.int32, copy=False)
blob_dict['obj_labels_sbj_pos_fg_int32'] = roidb['max_obj_classes'][
sbj_pos_inds].astype(np.int32, copy=False)
sampled_sbj_boxes_sbj_pos = roidb['sbj_boxes'][sbj_pos_inds]
sampled_obj_boxes_sbj_pos = roidb['obj_boxes'][sbj_pos_inds]
# Scale rois and format as (batch_idx, x1, y1, x2, y2)
sampled_sbj_rois_sbj_pos = sampled_sbj_boxes_sbj_pos * im_scale
sampled_obj_rois_sbj_pos = sampled_obj_boxes_sbj_pos * im_scale
repeated_batch_idx = batch_idx * blob_utils.ones(
(sbj_pos_inds.shape[0], 1))
sampled_sbj_rois_sbj_pos = np.hstack(
(repeated_batch_idx, sampled_sbj_rois_sbj_pos))
sampled_obj_rois_sbj_pos = np.hstack(
(repeated_batch_idx, sampled_obj_rois_sbj_pos))
blob_dict['sbj_rois_sbj_pos'] = sampled_sbj_rois_sbj_pos
blob_dict['obj_rois_sbj_pos'] = sampled_obj_rois_sbj_pos
sampled_rel_rois_sbj_pos = box_utils_rel.rois_union(
sampled_sbj_rois_sbj_pos, sampled_obj_rois_sbj_pos)
blob_dict['rel_rois_sbj_pos'] = sampled_rel_rois_sbj_pos
_, inds_unique_sbj_pos, inds_reverse_sbj_pos = np.unique(
sampled_sbj_rois_sbj_pos,
return_index=True,
return_inverse=True,
axis=0)
assert inds_reverse_sbj_pos.shape[0] == sampled_sbj_rois_sbj_pos.shape[
0]
blob_dict['inds_unique_sbj_pos'] = inds_unique_sbj_pos
blob_dict['inds_reverse_sbj_pos'] = inds_reverse_sbj_pos
if cfg.MODEL.USE_SPATIAL_FEAT:
sampled_spt_feat_sbj_pos = box_utils_rel.get_spt_features(
sampled_sbj_boxes_sbj_pos, sampled_obj_boxes_sbj_pos,
roidb['width'], roidb['height'])
blob_dict['spt_feat_sbj_pos'] = sampled_spt_feat_sbj_pos
# obj
# Here a naturally existing assumption is, each positive obj should have at least one positive sbj
obj_pos_pair_pos_inds = np.where(
(max_pair_overlaps >= cfg.TRAIN.FG_THRESH))[0]
obj_pos_sbj_pos_pair_neg_inds = np.where(
(max_obj_overlaps >= cfg.TRAIN.FG_THRESH)
& (max_sbj_overlaps >= cfg.TRAIN.FG_THRESH)
& (max_pair_overlaps < cfg.TRAIN.BG_THRESH_HI))[0]
obj_pos_sbj_neg_pair_neg_inds = np.where(
(max_obj_overlaps >= cfg.TRAIN.FG_THRESH)
& (max_sbj_overlaps < cfg.TRAIN.FG_THRESH)
& (max_pair_overlaps < cfg.TRAIN.BG_THRESH_HI))[0]
if obj_pos_pair_pos_inds.size > 0:
obj_pos_pair_pos_inds = npr.choice(
obj_pos_pair_pos_inds,
size=int(min(nodes_per_image, obj_pos_pair_pos_inds.size)),
replace=False)
if obj_pos_sbj_pos_pair_neg_inds.size > 0:
obj_pos_sbj_pos_pair_neg_inds = npr.choice(
obj_pos_sbj_pos_pair_neg_inds,
size=int(
min(nodes_per_image, obj_pos_sbj_pos_pair_neg_inds.size)),
replace=False)
obj_pos_pair_neg_inds = obj_pos_sbj_pos_pair_neg_inds
if nodes_per_image - obj_pos_sbj_pos_pair_neg_inds.size > 0 and obj_pos_sbj_neg_pair_neg_inds.size:
obj_pos_sbj_neg_pair_neg_inds = npr.choice(
obj_pos_sbj_neg_pair_neg_inds,
size=int(
min(nodes_per_image - obj_pos_sbj_pos_pair_neg_inds.size,
obj_pos_sbj_neg_pair_neg_inds.size)),
replace=False)
obj_pos_pair_neg_inds = np.append(obj_pos_pair_neg_inds,
obj_pos_sbj_neg_pair_neg_inds)
obj_pos_inds = np.append(obj_pos_pair_pos_inds, obj_pos_pair_neg_inds)
binary_labels_obj_pos = np.zeros(obj_pos_inds.size, dtype=np.int32)
binary_labels_obj_pos[:obj_pos_pair_pos_inds.size] = 1
blob_dict[
'binary_labels_obj_pos_int32'] = binary_labels_obj_pos.astype(
np.int32, copy=False)
prd_pos_labels_obj_pos = roidb['max_prd_classes'][
obj_pos_pair_pos_inds]
prd_labels_obj_pos = np.zeros(obj_pos_inds.size, dtype=np.int32)
prd_labels_obj_pos[:obj_pos_pair_pos_inds.
size] = prd_pos_labels_obj_pos + 1
blob_dict['prd_labels_obj_pos_int32'] = prd_labels_obj_pos.astype(
np.int32, copy=False)
obj_labels_obj_pos = roidb['max_obj_classes'][obj_pos_inds] + 1
# 1. set all sbj labels > 0
sbj_labels_obj_pos = roidb['max_sbj_classes'][obj_pos_inds] + 1
# 2. find those negative sbj
max_sbj_overlaps_obj_pos = roidb['max_sbj_overlaps'][obj_pos_inds]
sbj_neg_inds_obj_pos = np.where(
max_sbj_overlaps_obj_pos < cfg.TRAIN.FG_THRESH)[0]
sbj_labels_obj_pos[sbj_neg_inds_obj_pos] = 0
blob_dict['sbj_labels_obj_pos_int32'] = sbj_labels_obj_pos.astype(
np.int32, copy=False)
blob_dict['obj_labels_obj_pos_int32'] = obj_labels_obj_pos.astype(
np.int32, copy=False)
# this is for freq bias in RelDN
blob_dict['sbj_labels_obj_pos_fg_int32'] = roidb['max_sbj_classes'][
obj_pos_inds].astype(np.int32, copy=False)
blob_dict['obj_labels_obj_pos_fg_int32'] = roidb['max_obj_classes'][
obj_pos_inds].astype(np.int32, copy=False)
sampled_sbj_boxes_obj_pos = roidb['sbj_boxes'][obj_pos_inds]
sampled_obj_boxes_obj_pos = roidb['obj_boxes'][obj_pos_inds]
# Scale rois and format as (batch_idx, x1, y1, x2, y2)
sampled_sbj_rois_obj_pos = sampled_sbj_boxes_obj_pos * im_scale
sampled_obj_rois_obj_pos = sampled_obj_boxes_obj_pos * im_scale
repeated_batch_idx = batch_idx * blob_utils.ones(
(obj_pos_inds.shape[0], 1))
sampled_sbj_rois_obj_pos = np.hstack(
(repeated_batch_idx, sampled_sbj_rois_obj_pos))
sampled_obj_rois_obj_pos = np.hstack(
(repeated_batch_idx, sampled_obj_rois_obj_pos))
blob_dict['sbj_rois_obj_pos'] = sampled_sbj_rois_obj_pos
blob_dict['obj_rois_obj_pos'] = sampled_obj_rois_obj_pos
sampled_rel_rois_obj_pos = box_utils_rel.rois_union(
sampled_sbj_rois_obj_pos, sampled_obj_rois_obj_pos)
blob_dict['rel_rois_obj_pos'] = sampled_rel_rois_obj_pos
_, inds_unique_obj_pos, inds_reverse_obj_pos = np.unique(
sampled_obj_rois_obj_pos,
return_index=True,
return_inverse=True,
axis=0)
assert inds_reverse_obj_pos.shape[0] == sampled_obj_rois_obj_pos.shape[
0]
blob_dict['inds_unique_obj_pos'] = inds_unique_obj_pos
blob_dict['inds_reverse_obj_pos'] = inds_reverse_obj_pos
if cfg.MODEL.USE_SPATIAL_FEAT:
sampled_spt_feat_obj_pos = box_utils_rel.get_spt_features(
sampled_sbj_boxes_obj_pos, sampled_obj_boxes_obj_pos,
roidb['width'], roidb['height'])
blob_dict['spt_feat_obj_pos'] = sampled_spt_feat_obj_pos
return blob_dict
def _forward(self,
data,
im_info,
do_vis=False,
dataset_name=None,
roidb=None,
use_gt_labels=False,
**rpn_kwargs):
im_data = data
if self.training:
roidb = list(map(lambda x: blob_utils.deserialize(x)[0], roidb))
if dataset_name is not None:
dataset_name = blob_utils.deserialize(dataset_name)
else:
dataset_name = cfg.TRAIN.DATASETS[
0] if self.training else cfg.TEST.DATASETS[
0] # assuming only one dataset per run
device_id = im_data.get_device()
return_dict = {} # A dict to collect return variables
blob_conv = self.Conv_Body(im_data)
if not cfg.MODEL.USE_REL_PYRAMID:
blob_conv_prd = self.Prd_RCNN.Conv_Body(im_data)
rpn_ret = self.RPN(blob_conv, im_info, roidb)
if cfg.FPN.FPN_ON:
# Retain only the blobs that will be used for RoI heads. `blob_conv` may include
# extra blobs that are used for RPN proposals, but not for RoI heads.
blob_conv = blob_conv[-self.num_roi_levels:]
if not cfg.MODEL.USE_REL_PYRAMID:
blob_conv_prd = blob_conv_prd[-self.num_roi_levels:]
else:
blob_conv_prd = self.RelPyramid(blob_conv)
if cfg.MODEL.SHARE_RES5 and self.training:
box_feat, res5_feat = self.Box_Head(blob_conv,
rpn_ret,
use_relu=True)
else:
box_feat = self.Box_Head(blob_conv, rpn_ret, use_relu=True)
cls_score, bbox_pred = self.Box_Outs(box_feat)
# now go through the predicate branch
use_relu = False if cfg.MODEL.NO_FC7_RELU else True
if self.training:
fg_inds = np.where(rpn_ret['labels_int32'] > 0)[0]
det_rois = rpn_ret['rois'][fg_inds]
det_labels = rpn_ret['labels_int32'][fg_inds]
det_scores = F.softmax(cls_score[fg_inds], dim=1)
rel_ret = self.RelPN(det_rois, det_labels, det_scores, im_info,
dataset_name, roidb)
if cfg.MODEL.ADD_SO_SCORES:
sbj_feat = self.S_Head(blob_conv,
rel_ret,
rois_name='sbj_rois',
use_relu=use_relu)
obj_feat = self.O_Head(blob_conv,
rel_ret,
rois_name='obj_rois',
use_relu=use_relu)
else:
sbj_feat = self.Box_Head(blob_conv,
rel_ret,
rois_name='sbj_rois',
use_relu=use_relu)
obj_feat = self.Box_Head(blob_conv,
rel_ret,
rois_name='obj_rois',
use_relu=use_relu)
if cfg.MODEL.USE_NODE_CONTRASTIVE_LOSS or cfg.MODEL.USE_NODE_CONTRASTIVE_SO_AWARE_LOSS or cfg.MODEL.USE_NODE_CONTRASTIVE_P_AWARE_LOSS:
if cfg.MODEL.ADD_SO_SCORES:
# sbj
sbj_feat_sbj_pos = self.S_Head(
blob_conv,
rel_ret,
rois_name='sbj_rois_sbj_pos',
use_relu=use_relu)
obj_feat_sbj_pos = self.O_Head(
blob_conv,
rel_ret,
rois_name='obj_rois_sbj_pos',
use_relu=use_relu)
# obj
sbj_feat_obj_pos = self.S_Head(
blob_conv,
rel_ret,
rois_name='sbj_rois_obj_pos',
use_relu=use_relu)
obj_feat_obj_pos = self.O_Head(
blob_conv,
rel_ret,
rois_name='obj_rois_obj_pos',
use_relu=use_relu)
else:
# sbj
sbj_feat_sbj_pos = self.Box_Head(
blob_conv,
rel_ret,
rois_name='sbj_rois_sbj_pos',
use_relu=use_relu)
obj_feat_sbj_pos = self.Box_Head(
blob_conv,
rel_ret,
rois_name='obj_rois_sbj_pos',
use_relu=use_relu)
# obj
sbj_feat_obj_pos = self.Box_Head(
blob_conv,
rel_ret,
rois_name='sbj_rois_obj_pos',
use_relu=use_relu)
obj_feat_obj_pos = self.Box_Head(
blob_conv,
rel_ret,
rois_name='obj_rois_obj_pos',
use_relu=use_relu)
else:
if roidb is not None:
im_scale = im_info.data.numpy()[:, 2][0]
im_w = im_info.data.numpy()[:, 1][0]
im_h = im_info.data.numpy()[:, 0][0]
sbj_boxes = roidb['sbj_gt_boxes']
obj_boxes = roidb['obj_gt_boxes']
sbj_rois = sbj_boxes * im_scale
obj_rois = obj_boxes * im_scale
repeated_batch_idx = 0 * blob_utils.ones(
(sbj_rois.shape[0], 1))
sbj_rois = np.hstack((repeated_batch_idx, sbj_rois))
obj_rois = np.hstack((repeated_batch_idx, obj_rois))
rel_rois = box_utils_rel.rois_union(sbj_rois, obj_rois)
rel_ret = {}
rel_ret['sbj_rois'] = sbj_rois
rel_ret['obj_rois'] = obj_rois
rel_ret['rel_rois'] = rel_rois
if cfg.FPN.FPN_ON and cfg.FPN.MULTILEVEL_ROIS:
lvl_min = cfg.FPN.ROI_MIN_LEVEL
lvl_max = cfg.FPN.ROI_MAX_LEVEL
rois_blob_names = ['sbj_rois', 'obj_rois', 'rel_rois']
for rois_blob_name in rois_blob_names:
# Add per FPN level roi blobs named like: <rois_blob_name>_fpn<lvl>
target_lvls = fpn_utils.map_rois_to_fpn_levels(
rel_ret[rois_blob_name][:, 1:5], lvl_min, lvl_max)
fpn_utils.add_multilevel_roi_blobs(
rel_ret, rois_blob_name, rel_ret[rois_blob_name],
target_lvls, lvl_min, lvl_max)
sbj_det_feat = self.Box_Head(blob_conv,
rel_ret,
rois_name='sbj_rois',
use_relu=True)
sbj_cls_scores, _ = self.Box_Outs(sbj_det_feat)
sbj_cls_scores = sbj_cls_scores.data.cpu().numpy()
obj_det_feat = self.Box_Head(blob_conv,
rel_ret,
rois_name='obj_rois',
use_relu=True)
obj_cls_scores, _ = self.Box_Outs(obj_det_feat)
obj_cls_scores = obj_cls_scores.data.cpu().numpy()
if use_gt_labels:
sbj_labels = roidb['sbj_gt_classes'] # start from 0
obj_labels = roidb['obj_gt_classes'] # start from 0
sbj_scores = np.ones_like(sbj_labels, dtype=np.float32)
obj_scores = np.ones_like(obj_labels, dtype=np.float32)
else:
sbj_labels = np.argmax(sbj_cls_scores[:, 1:], axis=1)
obj_labels = np.argmax(obj_cls_scores[:, 1:], axis=1)
sbj_scores = np.amax(sbj_cls_scores[:, 1:], axis=1)
obj_scores = np.amax(obj_cls_scores[:, 1:], axis=1)
rel_ret['sbj_scores'] = sbj_scores.astype(np.float32,
copy=False)
rel_ret['obj_scores'] = obj_scores.astype(np.float32,
copy=False)
rel_ret['sbj_labels'] = sbj_labels.astype(
np.int32, copy=False) + 1 # need to start from 1
rel_ret['obj_labels'] = obj_labels.astype(
np.int32, copy=False) + 1 # need to start from 1
rel_ret['all_sbj_labels_int32'] = sbj_labels.astype(np.int32,
copy=False)
rel_ret['all_obj_labels_int32'] = obj_labels.astype(np.int32,
copy=False)
if cfg.MODEL.USE_SPATIAL_FEAT:
spt_feat = box_utils_rel.get_spt_features(
sbj_boxes, obj_boxes, im_w, im_h)
rel_ret['spt_feat'] = spt_feat
if cfg.MODEL.ADD_SO_SCORES:
sbj_feat = self.S_Head(blob_conv,
rel_ret,
rois_name='sbj_rois',
use_relu=use_relu)
obj_feat = self.O_Head(blob_conv,
rel_ret,
rois_name='obj_rois',
use_relu=use_relu)
else:
sbj_feat = self.Box_Head(blob_conv,
rel_ret,
rois_name='sbj_rois',
use_relu=use_relu)
obj_feat = self.Box_Head(blob_conv,
rel_ret,
rois_name='obj_rois',
use_relu=use_relu)
else:
score_thresh = cfg.TEST.SCORE_THRESH
while score_thresh >= -1e-06: # a negative value very close to 0.0
det_rois, det_labels, det_scores = \
self.prepare_det_rois(rpn_ret['rois'], cls_score, bbox_pred, im_info, score_thresh)
rel_ret = self.RelPN(det_rois, det_labels, det_scores,
im_info, dataset_name, roidb)
valid_len = len(rel_ret['rel_rois'])
if valid_len > 0:
break
logger.info(
'Got {} rel_rois when score_thresh={}, changing to {}'.
format(valid_len, score_thresh, score_thresh - 0.01))
score_thresh -= 0.01
if cfg.MODEL.ADD_SO_SCORES:
det_s_feat = self.S_Head(blob_conv,
rel_ret,
rois_name='det_rois',
use_relu=use_relu)
det_o_feat = self.O_Head(blob_conv,
rel_ret,
rois_name='det_rois',
use_relu=use_relu)
sbj_feat = det_s_feat[rel_ret['sbj_inds']]
obj_feat = det_o_feat[rel_ret['obj_inds']]
else:
det_feat = self.Box_Head(blob_conv,
rel_ret,
rois_name='det_rois',
use_relu=use_relu)
sbj_feat = det_feat[rel_ret['sbj_inds']]
obj_feat = det_feat[rel_ret['obj_inds']]
rel_feat = self.Prd_RCNN.Box_Head(blob_conv_prd,
rel_ret,
rois_name='rel_rois',
use_relu=use_relu)
spo_feat = torch.cat((sbj_feat, rel_feat, obj_feat), dim=1)
if cfg.MODEL.USE_SPATIAL_FEAT:
spt_feat = rel_ret['spt_feat']
else:
spt_feat = None
if cfg.MODEL.USE_FREQ_BIAS or cfg.MODEL.RUN_BASELINE:
sbj_labels = rel_ret['all_sbj_labels_int32']
obj_labels = rel_ret['all_obj_labels_int32']
else:
sbj_labels = None
obj_labels = None
# prd_scores is the visual scores. See reldn_heads.py
prd_scores, prd_bias_scores, prd_spt_scores, ttl_cls_scores, sbj_cls_scores, obj_cls_scores = \
self.RelDN(spo_feat, spt_feat, sbj_labels, obj_labels, sbj_feat, obj_feat)
if self.training:
return_dict['losses'] = {}
return_dict['metrics'] = {}
# rpn loss
rpn_kwargs.update(
dict((k, rpn_ret[k]) for k in rpn_ret.keys()
if (k.startswith('rpn_cls_logits')
or k.startswith('rpn_bbox_pred'))))
loss_rpn_cls, loss_rpn_bbox = rpn_heads.generic_rpn_losses(
**rpn_kwargs)
if cfg.FPN.FPN_ON:
for i, lvl in enumerate(
range(cfg.FPN.RPN_MIN_LEVEL,
cfg.FPN.RPN_MAX_LEVEL + 1)):
return_dict['losses']['loss_rpn_cls_fpn%d' %
lvl] = loss_rpn_cls[i]
return_dict['losses']['loss_rpn_bbox_fpn%d' %
lvl] = loss_rpn_bbox[i]
else:
return_dict['losses']['loss_rpn_cls'] = loss_rpn_cls
return_dict['losses']['loss_rpn_bbox'] = loss_rpn_bbox
# bbox loss
loss_cls, loss_bbox, accuracy_cls = fast_rcnn_heads.fast_rcnn_losses(
cls_score, bbox_pred, rpn_ret['labels_int32'],
rpn_ret['bbox_targets'], rpn_ret['bbox_inside_weights'],
rpn_ret['bbox_outside_weights'])
return_dict['losses']['loss_cls'] = loss_cls
return_dict['losses']['loss_bbox'] = loss_bbox
return_dict['metrics']['accuracy_cls'] = accuracy_cls
if cfg.MODEL.USE_FREQ_BIAS and not cfg.MODEL.ADD_SCORES_ALL:
loss_cls_bias, accuracy_cls_bias = reldn_heads.reldn_losses(
prd_bias_scores, rel_ret['all_prd_labels_int32'])
return_dict['losses']['loss_cls_bias'] = loss_cls_bias
return_dict['metrics']['accuracy_cls_bias'] = accuracy_cls_bias
if cfg.MODEL.USE_SPATIAL_FEAT and not cfg.MODEL.ADD_SCORES_ALL:
loss_cls_spt, accuracy_cls_spt = reldn_heads.reldn_losses(
prd_spt_scores, rel_ret['all_prd_labels_int32'])
return_dict['losses']['loss_cls_spt'] = loss_cls_spt
return_dict['metrics']['accuracy_cls_spt'] = accuracy_cls_spt
if cfg.MODEL.ADD_SCORES_ALL:
loss_cls_ttl, accuracy_cls_ttl = reldn_heads.reldn_losses(
ttl_cls_scores, rel_ret['all_prd_labels_int32'])
return_dict['losses']['loss_cls_ttl'] = loss_cls_ttl
return_dict['metrics']['accuracy_cls_ttl'] = accuracy_cls_ttl
else:
loss_cls_prd, accuracy_cls_prd = reldn_heads.reldn_losses(
prd_scores, rel_ret['all_prd_labels_int32'])
return_dict['losses']['loss_cls_prd'] = loss_cls_prd
return_dict['metrics']['accuracy_cls_prd'] = accuracy_cls_prd
if cfg.MODEL.USE_NODE_CONTRASTIVE_LOSS or cfg.MODEL.USE_NODE_CONTRASTIVE_SO_AWARE_LOSS or cfg.MODEL.USE_NODE_CONTRASTIVE_P_AWARE_LOSS:
# sbj
rel_feat_sbj_pos = self.Prd_RCNN.Box_Head(
blob_conv_prd,
rel_ret,
rois_name='rel_rois_sbj_pos',
use_relu=use_relu)
spo_feat_sbj_pos = torch.cat(
(sbj_feat_sbj_pos, rel_feat_sbj_pos, obj_feat_sbj_pos),
dim=1)
if cfg.MODEL.USE_SPATIAL_FEAT:
spt_feat_sbj_pos = rel_ret['spt_feat_sbj_pos']
else:
spt_feat_sbj_pos = None
if cfg.MODEL.USE_FREQ_BIAS or cfg.MODEL.RUN_BASELINE:
sbj_labels_sbj_pos_fg = rel_ret[
'sbj_labels_sbj_pos_fg_int32']
obj_labels_sbj_pos_fg = rel_ret[
'obj_labels_sbj_pos_fg_int32']
else:
sbj_labels_sbj_pos_fg = None
obj_labels_sbj_pos_fg = None
_, prd_bias_scores_sbj_pos, _, ttl_cls_scores_sbj_pos, _, _ = \
self.RelDN(spo_feat_sbj_pos, spt_feat_sbj_pos, sbj_labels_sbj_pos_fg, obj_labels_sbj_pos_fg, sbj_feat_sbj_pos, obj_feat_sbj_pos)
# obj
rel_feat_obj_pos = self.Prd_RCNN.Box_Head(
blob_conv_prd,
rel_ret,
rois_name='rel_rois_obj_pos',
use_relu=use_relu)
spo_feat_obj_pos = torch.cat(
(sbj_feat_obj_pos, rel_feat_obj_pos, obj_feat_obj_pos),
dim=1)
if cfg.MODEL.USE_SPATIAL_FEAT:
spt_feat_obj_pos = rel_ret['spt_feat_obj_pos']
else:
spt_feat_obj_pos = None
if cfg.MODEL.USE_FREQ_BIAS or cfg.MODEL.RUN_BASELINE:
sbj_labels_obj_pos_fg = rel_ret[
'sbj_labels_obj_pos_fg_int32']
obj_labels_obj_pos_fg = rel_ret[
'obj_labels_obj_pos_fg_int32']
else:
sbj_labels_obj_pos_fg = None
obj_labels_obj_pos_fg = None
_, prd_bias_scores_obj_pos, _, ttl_cls_scores_obj_pos, _, _ = \
self.RelDN(spo_feat_obj_pos, spt_feat_obj_pos, sbj_labels_obj_pos_fg, obj_labels_obj_pos_fg, sbj_feat_obj_pos, obj_feat_obj_pos)
if cfg.MODEL.USE_NODE_CONTRASTIVE_LOSS:
loss_contrastive_sbj, loss_contrastive_obj = reldn_heads.reldn_contrastive_losses(
ttl_cls_scores_sbj_pos, ttl_cls_scores_obj_pos,
rel_ret)
return_dict['losses'][
'loss_contrastive_sbj'] = loss_contrastive_sbj * cfg.MODEL.NODE_CONTRASTIVE_WEIGHT
return_dict['losses'][
'loss_contrastive_obj'] = loss_contrastive_obj * cfg.MODEL.NODE_CONTRASTIVE_WEIGHT
if cfg.MODEL.USE_NODE_CONTRASTIVE_SO_AWARE_LOSS:
loss_so_contrastive_sbj, loss_so_contrastive_obj = reldn_heads.reldn_so_contrastive_losses(
ttl_cls_scores_sbj_pos, ttl_cls_scores_obj_pos,
rel_ret)
return_dict['losses'][
'loss_so_contrastive_sbj'] = loss_so_contrastive_sbj * cfg.MODEL.NODE_CONTRASTIVE_SO_AWARE_WEIGHT
return_dict['losses'][
'loss_so_contrastive_obj'] = loss_so_contrastive_obj * cfg.MODEL.NODE_CONTRASTIVE_SO_AWARE_WEIGHT
if cfg.MODEL.USE_NODE_CONTRASTIVE_P_AWARE_LOSS:
loss_p_contrastive_sbj, loss_p_contrastive_obj = reldn_heads.reldn_p_contrastive_losses(
ttl_cls_scores_sbj_pos, ttl_cls_scores_obj_pos,
prd_bias_scores_sbj_pos, prd_bias_scores_obj_pos,
rel_ret)
return_dict['losses'][
'loss_p_contrastive_sbj'] = loss_p_contrastive_sbj * cfg.MODEL.NODE_CONTRASTIVE_P_AWARE_WEIGHT
return_dict['losses'][
'loss_p_contrastive_obj'] = loss_p_contrastive_obj * cfg.MODEL.NODE_CONTRASTIVE_P_AWARE_WEIGHT
# pytorch0.4 bug on gathering scalar(0-dim) tensors
for k, v in return_dict['losses'].items():
return_dict['losses'][k] = v.unsqueeze(0)
for k, v in return_dict['metrics'].items():
return_dict['metrics'][k] = v.unsqueeze(0)
else:
# Testing
return_dict['sbj_rois'] = rel_ret['sbj_rois']
return_dict['obj_rois'] = rel_ret['obj_rois']
return_dict['sbj_labels'] = rel_ret['sbj_labels']
return_dict['obj_labels'] = rel_ret['obj_labels']
return_dict['sbj_scores'] = rel_ret['sbj_scores']
return_dict['obj_scores'] = rel_ret['obj_scores']
return_dict['prd_scores'] = prd_scores
if cfg.MODEL.USE_FREQ_BIAS:
return_dict['prd_scores_bias'] = prd_bias_scores
if cfg.MODEL.USE_SPATIAL_FEAT:
return_dict['prd_scores_spt'] = prd_spt_scores
if cfg.MODEL.ADD_SCORES_ALL:
return_dict['prd_ttl_scores'] = ttl_cls_scores
if do_vis:
return_dict['blob_conv'] = blob_conv
return_dict['blob_conv_prd'] = blob_conv_prd
return return_dict
def forward(self,
det_rois,
det_labels,
det_scores,
im_info,
dataset_name,
roidb=None):
"""
det_rois: feature maps from the backbone network. (Variable)
im_info: (CPU Variable)
roidb: (list of ndarray)
"""
# Get pairwise proposals first
if roidb is not None:
# we always feed one image per batch during training
assert len(roidb) == 1
sbj_inds = np.repeat(np.arange(det_rois.shape[0]), det_rois.shape[0])
obj_inds = np.tile(np.arange(det_rois.shape[0]), det_rois.shape[0])
# remove self paired rois
if det_rois.shape[
0] > 1: # no pairs to remove when there is at most one detection
sbj_inds, obj_inds = self.remove_self_pairs(
det_rois.shape[0], sbj_inds, obj_inds)
sbj_rois = det_rois[sbj_inds]
obj_rois = det_rois[obj_inds]
im_scale = im_info.data.numpy()[:, 2][0]
sbj_boxes = sbj_rois[:, 1:] / im_scale
obj_boxes = obj_rois[:, 1:] / im_scale
# filters out those roi pairs whose boxes are not overlapping in the original scales
if cfg.MODEL.USE_OVLP_FILTER:
ovlp_so = box_utils_rel.bbox_pair_overlaps(
sbj_boxes.astype(dtype=np.float32, copy=False),
obj_boxes.astype(dtype=np.float32, copy=False))
ovlp_inds = np.where(ovlp_so > 0)[0]
sbj_inds = sbj_inds[ovlp_inds]
obj_inds = obj_inds[ovlp_inds]
sbj_rois = sbj_rois[ovlp_inds]
obj_rois = obj_rois[ovlp_inds]
sbj_boxes = sbj_boxes[ovlp_inds]
obj_boxes = obj_boxes[ovlp_inds]
return_dict = {}
if self.training:
# Add binary relationships
blobs_out = self.RelPN_GenerateProposalLabels(
sbj_rois, obj_rois, det_rois, roidb, im_info)
return_dict.update(blobs_out)
else:
sbj_labels = det_labels[sbj_inds]
obj_labels = det_labels[obj_inds]
sbj_scores = det_scores[sbj_inds]
obj_scores = det_scores[obj_inds]
rel_rois = box_utils_rel.rois_union(sbj_rois, obj_rois)
return_dict['det_rois'] = det_rois
return_dict['sbj_inds'] = sbj_inds
return_dict['obj_inds'] = obj_inds
return_dict['sbj_rois'] = sbj_rois
return_dict['obj_rois'] = obj_rois
return_dict['rel_rois'] = rel_rois
return_dict['sbj_labels'] = sbj_labels
return_dict['obj_labels'] = obj_labels
return_dict['sbj_scores'] = sbj_scores
return_dict['obj_scores'] = obj_scores
return_dict['fg_size'] = np.array([sbj_rois.shape[0]],
dtype=np.int32)
im_scale = im_info.data.numpy()[:, 2][0]
im_w = im_info.data.numpy()[:, 1][0]
im_h = im_info.data.numpy()[:, 0][0]
if cfg.MODEL.USE_SPATIAL_FEAT:
spt_feat = box_utils_rel.get_spt_features(
sbj_boxes, obj_boxes, im_w, im_h)
return_dict['spt_feat'] = spt_feat
if cfg.MODEL.USE_FREQ_BIAS or cfg.MODEL.RUN_BASELINE:
return_dict['all_sbj_labels_int32'] = sbj_labels.astype(
np.int32, copy=False) - 1 # det_labels start from 1
return_dict['all_obj_labels_int32'] = obj_labels.astype(
np.int32, copy=False) - 1 # det_labels start from 1
if cfg.FPN.FPN_ON and cfg.FPN.MULTILEVEL_ROIS:
lvl_min = cfg.FPN.ROI_MIN_LEVEL
lvl_max = cfg.FPN.ROI_MAX_LEVEL
# when use min_rel_area, the same sbj/obj area could be mapped to different feature levels
# when they are associated with different relationships
# Thus we cannot get det_rois features then gather sbj/obj features
# The only way is gather sbj/obj per relationship, thus need to return sbj_rois/obj_rois
rois_blob_names = ['det_rois', 'rel_rois']
for rois_blob_name in rois_blob_names:
# Add per FPN level roi blobs named like: <rois_blob_name>_fpn<lvl>
target_lvls = fpn_utils.map_rois_to_fpn_levels(
return_dict[rois_blob_name][:, 1:5], lvl_min, lvl_max)
fpn_utils.add_multilevel_roi_blobs(
return_dict, rois_blob_name,
return_dict[rois_blob_name], target_lvls, lvl_min,
lvl_max)
return return_dict