def steepest_descent_learn_filter_resnet18_newiou(filter_size=1, optim_iter=3, optim_init_step=1.0, optim_init_reg=0.01, output_activation=None,
classification_layer='layer3', backbone_pretrained=False, clf_feat_blocks=1,
clf_feat_norm=True, init_filter_norm=False, final_conv=False,
out_feature_dim=256, init_gauss_sigma=1.0, num_dist_bins=5, bin_displacement=1.0, test_loss=None,
mask_init_factor=4.0, iou_input_dim=(256,256), iou_inter_dim=(256,256),
jitter_sigma_factor=None, train_backbone=True):
# backbone
backbone_net = backbones.resnet18(pretrained=backbone_pretrained)
norm_scale = math.sqrt(1.0 / (out_feature_dim * filter_size * filter_size))
# classifier
clf_feature_extractor = clf_features.residual_basic_block(num_blocks=clf_feat_blocks, l2norm=clf_feat_norm,
final_conv=final_conv, norm_scale=norm_scale,
out_dim=out_feature_dim)
initializer = clf_initializer.FilterInitializerLinear(filter_size=filter_size, filter_norm=init_filter_norm, feature_dim=out_feature_dim)
optimizer = clf_optimizer.SteepestDescentLearn(num_iter=optim_iter, filter_size=filter_size, init_step_length=optim_init_step,
init_filter_reg=optim_init_reg, feature_dim=out_feature_dim,
init_gauss_sigma=init_gauss_sigma, num_dist_bins=num_dist_bins,
bin_displacement=bin_displacement, test_loss=test_loss, mask_init_factor=mask_init_factor)
classifier = target_clf.LinearFilter(filter_size=filter_size, filter_initializer=initializer,
filter_optimizer=optimizer, feature_extractor=clf_feature_extractor,
output_activation=output_activation, jitter_sigma_factor=jitter_sigma_factor)
# Bounding box regressor
bb_regressor = bbmodels.AtomIoUNet(pred_input_dim=iou_input_dim, pred_inter_dim=iou_inter_dim)
net = OptimTracker(feature_extractor=backbone_net, classifier=classifier, bb_regressor=bb_regressor,
classification_layer=classification_layer, bb_regressor_layer=['layer2', 'layer3'], train_feature_extractor=train_backbone)
return net
def steepest_descent_learn_filter_resnet50_newiou(filter_size=1, optim_iter=3, optim_init_step=1.0, optim_init_reg=0.01, output_activation=None,
classification_layer='layer3', backbone_pretrained=False, clf_feat_blocks=1,
clf_feat_norm=True, init_filter_norm=False, final_conv=False,
out_feature_dim=256, init_gauss_sigma=1.0, num_dist_bins=5, bin_displacement=1.0, test_loss=None,
mask_init_factor=4.0, iou_input_dim=(256,256), iou_inter_dim=(256,256),
jitter_sigma_factor=None):
# backbone
backbone_net = backbones.resnet50(pretrained=backbone_pretrained)
norm_scale = math.sqrt(1.0 / (out_feature_dim * filter_size * filter_size))
# classifier
clf_feature_extractor = clf_features.residual_bottleneck_comb(num_blocks=clf_feat_blocks, l2norm=clf_feat_norm,
final_conv=final_conv, norm_scale=norm_scale,
out_dim=out_feature_dim)
initializer = clf_initializer.FilterInitializerLinear(filter_size=filter_size, filter_norm=init_filter_norm, feature_dim=out_feature_dim)
optimizer = clf_optimizer.SteepestDescentLearn(num_iter=optim_iter, filter_size=filter_size, init_step_length=optim_init_step,
init_filter_reg=optim_init_reg, feature_dim=out_feature_dim,
init_gauss_sigma=init_gauss_sigma, num_dist_bins=num_dist_bins,
bin_displacement=bin_displacement, test_loss=test_loss, mask_init_factor=mask_init_factor)
classifier = target_clf.LinearFilter(filter_size=filter_size, filter_initializer=initializer,
filter_optimizer=optimizer, feature_extractor=clf_feature_extractor,
output_activation=output_activation, jitter_sigma_factor=jitter_sigma_factor)
# Bounding box regressor
# combine RGB and TIR by 2*
bb_regressor = bbmodels.AtomIoUNet(input_dim=(4*128,4*256), pred_input_dim=iou_input_dim, pred_inter_dim=iou_inter_dim)
# load pretrained model
pretrainmodel_path='/home/lichao/projects/pytracking_lichao/pytracking/DiMP_nets/sdlearn_300_onlytestloss_lr_causal_mg30_iou_nocf_res50_lfilt512_coco/OptimTracker_ep0040.pth.tar'
pretrainmodel = loading.torch_load_legacy(pretrainmodel_path)['net']
usepretrain = True; updback = True; updcls = True; updbb = True
if usepretrain:
if updback:
# update backbone
backbone_dict = backbone_net.state_dict()
pretrain_dict = {k[len('feature_extractor.'):]: v for k, v in pretrainmodel.items() if k[len('feature_extractor.'):] in backbone_dict}
backbone_net.load_state_dict(pretrain_dict)
if updcls:
# update classifier
pretrainmodel['classifier.feature_extractor.0.weight']=torch.cat((pretrainmodel['classifier.feature_extractor.0.weight'],pretrainmodel['classifier.feature_extractor.0.weight']),1)
classifier_dict = classifier.state_dict()
pretrain_dict = {k[len('classifier.'):]: v for k, v in pretrainmodel.items() if k[len('classifier.'):] in classifier_dict}
#classifier_dict.update(pretrain_dict)
classifier.load_state_dict(pretrain_dict)
if updbb:
# update Bounding box regressor
bb_regressor_dict = bb_regressor.state_dict()
pretrain_dict = {k[len('bb_regressor.'):]: v for k, v in pretrainmodel.items() if k[len('bb_regressor.'):] in bb_regressor_dict}
bb_regressor.load_state_dict(pretrain_dict)
net = OptimTracker(feature_extractor=backbone_net, classifier=classifier, bb_regressor=bb_regressor,
classification_layer=classification_layer, bb_regressor_layer=['layer2', 'layer3'])
return net
def dimpnet50(filter_size=1, optim_iter=5, optim_init_step=1.0, optim_init_reg=0.01,
classification_layer='layer3', feat_stride=16, backbone_pretrained=True, clf_feat_blocks=0,
clf_feat_norm=True, init_filter_norm=False, final_conv=True,
out_feature_dim=512, init_gauss_sigma=1.0, num_dist_bins=5, bin_displacement=1.0,
mask_init_factor=4.0, iou_input_dim=(256, 256), iou_inter_dim=(256, 256),
score_act='relu', act_param=None, target_mask_act='sigmoid',
detach_length=float('Inf'), frozen_backbone_layers=()):
# Backbone
backbone_net = backbones.resnet50(pretrained=backbone_pretrained, frozen_layers=frozen_backbone_layers)
# Feature normalization
norm_scale = math.sqrt(1.0 / (out_feature_dim * filter_size * filter_size))
# Classifier features
if classification_layer == 'layer3':
feature_dim = 256
elif classification_layer == 'layer4':
feature_dim = 512
else:
raise Exception
clf_feature_extractor = clf_features.residual_bottleneck(feature_dim=feature_dim,
num_blocks=clf_feat_blocks, l2norm=clf_feat_norm,
final_conv=final_conv, norm_scale=norm_scale,
out_dim=out_feature_dim)
# Initializer for the DiMP classifier
initializer = clf_initializer.FilterInitializerLinear(filter_size=filter_size, filter_norm=init_filter_norm,
feature_dim=out_feature_dim)
# Optimizer for the DiMP classifier
optimizer = clf_optimizer.DiMPSteepestDescentGN(num_iter=optim_iter, feat_stride=feat_stride,
init_step_length=optim_init_step,
init_filter_reg=optim_init_reg, init_gauss_sigma=init_gauss_sigma,
num_dist_bins=num_dist_bins,
bin_displacement=bin_displacement,
mask_init_factor=mask_init_factor,
score_act=score_act, act_param=act_param, mask_act=target_mask_act,
detach_length=detach_length)
### Transformer
init_transformer = transformer.Transformer(d_model=512, nhead=1, num_layers=1)
# The classifier module
classifier = target_clf.LinearFilter(filter_size=filter_size, filter_initializer=initializer,
filter_optimizer=optimizer, feature_extractor=clf_feature_extractor, transformer=init_transformer)
# Bounding box regressor
bb_regressor = bbmodels.AtomIoUNet(input_dim=(4*128,4*256), pred_input_dim=iou_input_dim, pred_inter_dim=iou_inter_dim)
# DiMP network
net = DiMPnet(feature_extractor=backbone_net, classifier=classifier, bb_regressor=bb_regressor,
classification_layer=classification_layer, bb_regressor_layer=['layer2', 'layer3'])
return net
def klcedimpnet18(filter_size=1, optim_iter=5, optim_init_step=1.0, optim_init_reg=0.01,
classification_layer='layer3', feat_stride=16, backbone_pretrained=True, clf_feat_blocks=1,
clf_feat_norm=True, init_filter_norm=False, final_conv=True,
out_feature_dim=256, gauss_sigma=1.0,
iou_input_dim=(256, 256), iou_inter_dim=(256, 256),
detach_length=float('Inf'), alpha_eps=0.0, train_feature_extractor=True,
init_uni_weight=None, optim_min_reg=1e-3, init_initializer='default', normalize_label=False,
label_shrink=0, softmax_reg=None, label_threshold=0, final_relu=False, init_pool_square=False,
frozen_backbone_layers=()):
if not train_feature_extractor:
frozen_backbone_layers = 'all'
# Backbone
backbone_net = backbones.resnet18(pretrained=backbone_pretrained, frozen_layers=frozen_backbone_layers)
# Feature normalization
norm_scale = math.sqrt(1.0 / (out_feature_dim * filter_size * filter_size))
# Classifier features
clf_feature_extractor = clf_features.residual_basic_block(num_blocks=clf_feat_blocks, l2norm=clf_feat_norm,
final_conv=final_conv, norm_scale=norm_scale,
out_dim=out_feature_dim, final_relu=final_relu)
# Initializer for the DiMP classifier
initializer = clf_initializer.FilterInitializerLinear(filter_size=filter_size, filter_norm=init_filter_norm,
feature_dim=out_feature_dim, init_weights=init_initializer,
pool_square=init_pool_square)
# Optimizer for the DiMP classifier
optimizer = clf_optimizer.PrDiMPSteepestDescentNewton(num_iter=optim_iter, feat_stride=feat_stride,
init_step_length=optim_init_step,
init_filter_reg=optim_init_reg, gauss_sigma=gauss_sigma,
detach_length=detach_length, alpha_eps=alpha_eps,
init_uni_weight=init_uni_weight,
min_filter_reg=optim_min_reg, normalize_label=normalize_label,
label_shrink=label_shrink, softmax_reg=softmax_reg,
label_threshold=label_threshold)
# The classifier module
classifier = target_clf.LinearFilter(filter_size=filter_size, filter_initializer=initializer,
filter_optimizer=optimizer, feature_extractor=clf_feature_extractor)
# Bounding box regressor
bb_regressor = bbmodels.AtomIoUNet(pred_input_dim=iou_input_dim, pred_inter_dim=iou_inter_dim)
# DiMP network
net = DiMPnet(feature_extractor=backbone_net, classifier=classifier, bb_regressor=bb_regressor,
classification_layer=classification_layer, bb_regressor_layer=['layer2', 'layer3'])
return net
def L2dimpnet18(filter_size=1, optim_iter=5, optim_init_step=1.0, optim_init_reg=0.01,
classification_layer='layer3', feat_stride=16, backbone_pretrained=True, clf_feat_blocks=1,
clf_feat_norm=True, init_filter_norm=False, final_conv=True,
out_feature_dim=256, iou_input_dim=(256, 256), iou_inter_dim=(256, 256),
detach_length=float('Inf'), hinge_threshold=-999, gauss_sigma=1.0, alpha_eps=0):
# Backbone
backbone_net = backbones.resnet18(pretrained=backbone_pretrained)
# Feature normalization
norm_scale = math.sqrt(1.0 / (out_feature_dim * filter_size * filter_size))
# Classifier features
clf_feature_extractor = clf_features.residual_basic_block(num_blocks=clf_feat_blocks, l2norm=clf_feat_norm,
final_conv=final_conv, norm_scale=norm_scale,
out_dim=out_feature_dim)
# Initializer for the DiMP classifier
initializer = clf_initializer.FilterInitializerLinear(filter_size=filter_size, filter_norm=init_filter_norm,
feature_dim=out_feature_dim)
# Optimizer for the DiMP classifier
optimizer = clf_optimizer.DiMPL2SteepestDescentGN(num_iter=optim_iter, feat_stride=feat_stride,
init_step_length=optim_init_step, hinge_threshold=hinge_threshold,
init_filter_reg=optim_init_reg, gauss_sigma=gauss_sigma,
detach_length=detach_length, alpha_eps=alpha_eps)
# The classifier module
classifier = target_clf.LinearFilter(filter_size=filter_size, filter_initializer=initializer,
filter_optimizer=optimizer, feature_extractor=clf_feature_extractor)
# Bounding box regressor
bb_regressor = bbmodels.AtomIoUNet(pred_input_dim=iou_input_dim, pred_inter_dim=iou_inter_dim)
# DiMP network
net = DiMPnet(feature_extractor=backbone_net, classifier=classifier, bb_regressor=bb_regressor,
classification_layer=classification_layer, bb_regressor_layer=['layer2', 'layer3'])
return net
def kysnet_res50(filter_size=4,
optim_iter=3,
appearance_feature_dim=512,
optim_init_step=0.9,
optim_init_reg=0.1,
classification_layer='layer3',
backbone_pretrained=True,
clf_feat_blocks=0,
clf_feat_norm=True,
final_conv=True,
init_filter_norm=False,
mask_init_factor=3.0,
score_act='relu',
target_mask_act='sigmoid',
num_dist_bins=100,
bin_displacement=0.1,
detach_length=float('Inf'),
train_feature_extractor=True,
train_iounet=True,
iou_input_dim=(256, 256),
iou_inter_dim=(256, 256),
cv_kernel_size=3,
cv_max_displacement=9,
cv_stride=1,
init_gauss_sigma=1.0,
state_dim=8,
representation_predictor_dims=(64, 32),
gru_ksz=3,
conf_measure='max',
dimp_thresh=None):
# ######################## backbone ########################
backbone_net = backbones.resnet50(pretrained=backbone_pretrained)
norm_scale = math.sqrt(
1.0 / (appearance_feature_dim * filter_size * filter_size))
# ######################## classifier ########################
clf_feature_extractor = clf_features.residual_bottleneck(
num_blocks=clf_feat_blocks,
l2norm=clf_feat_norm,
final_conv=final_conv,
norm_scale=norm_scale,
out_dim=appearance_feature_dim)
# Initializer for the DiMP classifier
initializer = clf_initializer.FilterInitializerLinear(
filter_size=filter_size,
filter_norm=init_filter_norm,
feature_dim=appearance_feature_dim)
# Optimizer for the DiMP classifier
optimizer = clf_optimizer.DiMPSteepestDescentGN(
num_iter=optim_iter,
feat_stride=16,
init_step_length=optim_init_step,
init_filter_reg=optim_init_reg,
init_gauss_sigma=init_gauss_sigma,
num_dist_bins=num_dist_bins,
bin_displacement=bin_displacement,
mask_init_factor=mask_init_factor,
score_act=score_act,
act_param=None,
mask_act=target_mask_act,
detach_length=detach_length)
# The classifier module
classifier = target_clf.LinearFilter(
filter_size=filter_size,
filter_initializer=initializer,
filter_optimizer=optimizer,
feature_extractor=clf_feature_extractor)
# Bounding box regressor
bb_regressor = bbmodels.AtomIoUNet(input_dim=(4 * 128, 4 * 256),
pred_input_dim=iou_input_dim,
pred_inter_dim=iou_inter_dim)
cost_volume_layer = cost_volume.CostVolume(cv_kernel_size,
cv_max_displacement,
stride=cv_stride,
abs_coordinate_output=True)
motion_response_predictor = resp_pred.ResponsePredictor(
state_dim=state_dim,
representation_predictor_dims=representation_predictor_dims,
gru_ksz=gru_ksz,
conf_measure=conf_measure,
dimp_thresh=dimp_thresh)
response_predictor = predictor_wrappers.PredictorWrapper(
cost_volume_layer, motion_response_predictor)
net = KYSNet(backbone_feature_extractor=backbone_net,
dimp_classifier=classifier,
predictor=response_predictor,
bb_regressor=bb_regressor,
classification_layer=classification_layer,
bb_regressor_layer=['layer2', 'layer3'],
train_feature_extractor=train_feature_extractor,
train_iounet=train_iounet)
return net
def dimpnet50(filter_size=1,
optim_iter=5,
optim_init_step=1.0,
optim_init_reg=0.01,
classification_layer='layer3',
feat_stride=16,
backbone_pretrained=True,
clf_feat_blocks=0,
clf_feat_norm=True,
init_filter_norm=False,
final_conv=True,
out_feature_dim=512,
init_gauss_sigma=1.0,
num_dist_bins=5,
bin_displacement=1.0,
mask_init_factor=4.0,
iou_input_dim=(256, 256),
iou_inter_dim=(256, 256),
score_act='relu',
act_param=None,
target_mask_act='sigmoid',
detach_length=float('Inf')):
# Backbone
backbone_net = backbones.resnet50(pretrained=backbone_pretrained)
# Feature normalization
norm_scale = math.sqrt(1.0 / (out_feature_dim * filter_size * filter_size))
# Classifier features
clf_feature_extractor = clf_features.residual_bottleneck(
num_blocks=clf_feat_blocks,
l2norm=clf_feat_norm,
final_conv=final_conv,
norm_scale=norm_scale,
out_dim=out_feature_dim)
# Initializer for the DiMP classifier
initializer = clf_initializer.FilterInitializerLinear(
settings=settings,
filter_size=filter_size,
filter_norm=init_filter_norm,
feature_dim=out_feature_dim)
# Optimizer for the DiMP classifier
optimizer = clf_optimizer.DiMPSteepestDescentGN(
settings=settings,
num_iter=optim_iter,
feat_stride=feat_stride,
init_step_length=optim_init_step,
init_filter_reg=optim_init_reg,
init_gauss_sigma=init_gauss_sigma,
num_dist_bins=num_dist_bins,
bin_displacement=bin_displacement,
mask_init_factor=mask_init_factor,
score_act=score_act,
act_param=act_param,
mask_act=target_mask_act,
detach_length=detach_length)
print(
'Song in ltr.models.tracking.DiMPnet_rgbd_blend1.py line 233, before classifier, target_clf.LinearFilter ...'
)
# The classifier module
classifier = target_clf.LinearFilter(
settings=settings,
filter_size=filter_size,
filter_initializer=initializer,
filter_optimizer=optimizer,
feature_extractor=clf_feature_extractor)
# Bounding box regressor for rgb
bb_regressor = bbmodels.AtomIoUNet(settings=settings,
input_dim=(4 * 128, 4 * 256),
pred_input_dim=iou_input_dim,
pred_inter_dim=iou_inter_dim)
print(
'Song in ltr.models.tracking.DiMPnet_rgbd_blend1.py line 240, dimpnet50 model_constructor ...'
)
# DiMP network
net = DiMPnet_rgbd_blend1(settings=settings,
feature_extractor=backbone_net,
classifier=classifier,
bb_regressor=bb_regressor,
classification_layer=classification_layer,
bb_regressor_layer=['layer2', 'layer3'])
return net
def fcotnet(clf_filter_size=4,
reg_filter_size=3,
optim_iter=5,
optim_init_step=1.0,
optim_init_reg=0.01,
classification_layer='layer3',
feat_stride=16,
backbone_pretrained=True,
clf_feat_blocks=0,
clf_feat_norm=True,
init_filter_norm=False,
final_conv=True,
out_feature_dim=512,
norm_scale_coef=2,
init_gauss_sigma=1.0,
num_dist_bins=5,
bin_displacement=1.0,
mask_init_factor=4.0,
score_act='relu',
act_param=None,
target_mask_act='sigmoid',
detach_length=float('Inf'),
train_cls_72_and_reg_init=True,
train_reg_optimizer=False,
train_cls_18=False):
# Backbone
backbone_net = backbones.resnet50(pretrained=backbone_pretrained)
pyramid_first_conv = FPNUpBlock(res_channels=1024,
planes=256,
smooth_output=False,
first_conv=True)
up_36 = FPNUpBlock(res_channels=512,
planes=256,
smooth_output=False,
first_conv=False)
up_72 = FPNUpBlock(res_channels=256,
planes=256,
smooth_output=True,
first_conv=False)
# classifier_72
norm_scale_72 = math.sqrt(norm_scale_coef /
(256 * clf_filter_size * clf_filter_size))
clf_head_72 = clf_features.clf_head_72(feature_dim=256,
l2norm=clf_feat_norm,
norm_scale=norm_scale_72,
out_dim=256,
inner_dim=128)
initializer_72 = clf_initializer.FilterInitializerLinear(
filter_size=clf_filter_size,
filter_norm=init_filter_norm,
feature_dim=256,
feature_stride=4)
optimizer_72 = clf_optimizer.DiMPSteepestDescentGN(
num_iter=optim_iter,
feat_stride=4,
init_step_length=optim_init_step,
init_filter_reg=optim_init_reg,
init_gauss_sigma=init_gauss_sigma,
num_dist_bins=num_dist_bins,
bin_displacement=bin_displacement,
mask_init_factor=mask_init_factor,
score_act=score_act,
act_param=act_param,
mask_act=target_mask_act,
detach_length=detach_length)
classifier_72 = target_clf.LinearFilter(filter_size=clf_filter_size,
filter_initializer=initializer_72,
filter_optimizer=optimizer_72,
feature_extractor=clf_head_72)
# classifier_18 (We use the same architecture of classifier_18 with DiMP.)
norm_scale_18 = math.sqrt(
1.0 / (out_feature_dim * clf_filter_size * clf_filter_size))
clf_head_18 = clf_features.clf_head_18(num_blocks=clf_feat_blocks,
l2norm=clf_feat_norm,
final_conv=final_conv,
norm_scale=norm_scale_18,
out_dim=out_feature_dim)
initializer_18 = clf_initializer.FilterInitializerLinear(
filter_size=clf_filter_size,
filter_norm=init_filter_norm,
feature_dim=out_feature_dim)
optimizer_18 = clf_optimizer.DiMPSteepestDescentGN(
num_iter=optim_iter,
feat_stride=feat_stride,
init_step_length=optim_init_step,
init_filter_reg=optim_init_reg,
init_gauss_sigma=init_gauss_sigma,
num_dist_bins=num_dist_bins,
bin_displacement=bin_displacement,
mask_init_factor=mask_init_factor,
score_act=score_act,
act_param=act_param,
mask_act=target_mask_act,
detach_length=detach_length)
classifier_18 = target_clf.LinearFilter(filter_size=clf_filter_size,
filter_initializer=initializer_18,
filter_optimizer=optimizer_18,
feature_extractor=clf_head_18)
# regressor_72
reg_optimizer_72 = reg_optimizer.RegSteepestDescentGN(
num_iter=optim_iter,
feat_stride=4,
init_step_length=1.0,
init_filter_reg=optim_init_reg,
detach_length=detach_length)
regressor_72 = RegFilter(
pool_size=reg_filter_size,
filter_dim=4,
filter_channel=256,
input_features_size=72,
input_features_channel=256,
inner_channel=128,
filter_optimizer=reg_optimizer_72,
train_reg_optimizer=train_reg_optimizer,
train_cls_72_and_reg_init=train_cls_72_and_reg_init)
# FCOT network
net = FCOTNet(feature_extractor=backbone_net,
classification_layer=classification_layer,
pyramid_first_conv=pyramid_first_conv,
pyramid_36=up_36,
pyramid_72=up_72,
classifier_18=classifier_18,
classifier_72=classifier_72,
regressor_72=regressor_72,
train_reg_optimizer=train_reg_optimizer,
train_cls_18=train_cls_18,
train_cls_72_and_reg_init=train_cls_72_and_reg_init)
return net
def initialize(self, image, gt_bbox, backbone, extract_classification_feat,
info: dict) -> dict:
# Initialize some stuff
self.frame_num = 1
if not self.params.has('device'):
self.params.device = 'cuda' if self.params.use_gpu else 'cpu'
self.backbone = backbone
self.extract_classification_feat = extract_classification_feat
# Initializer for the DiMP classifier
self.initializer = clf_initializer.FilterInitializerLinear(
filter_size=1, filter_norm=False,
feature_dim=512) #check cls out feature dim
# Optimizer for the DiMP classifier
self.optimizer = clf_optimizer.DiMPSteepestDescentGN(
num_iter=5,
feat_stride=8,
init_step_length=1.0,
init_filter_reg=0.01,
init_gauss_sigma=1.0,
num_dist_bins=5,
bin_displacement=1.0,
mask_init_factor=4.0,
score_act='relu',
act_param=None,
mask_act='sigmoid',
detach_length=float('Inf'))
# The classifier module
self.classifier = target_clf.LinearFilter(
filter_size=1,
filter_initializer=self.initializer,
filter_optimizer=self.optimizer,
feature_extractor=self.extract_classification_feat)
# Time initialization
tic = time.time()
# Convert image
im = numpy_to_torch(image)
# Get target position and size
state = gt_bbox
self.pos = torch.Tensor(
[state[1] + (state[3] - 1) / 2, state[0] + (state[2] - 1) / 2])
self.target_sz = torch.Tensor([state[3], state[2]]) #hw
# Set sizes
self.image_sz = torch.Tensor([im.shape[2], im.shape[3]])
sz = self.params.image_sample_size
sz = torch.Tensor([sz, sz] if isinstance(sz, int) else sz)
if self.params.get('use_image_aspect_ratio', False):
sz = self.image_sz * sz.prod().sqrt() / self.image_sz.prod().sqrt()
stride = self.params.get('feature_stride', 8)
sz = torch.round(sz / stride) * stride
self.img_sample_sz = sz
self.img_support_sz = self.img_sample_sz
# Set search area
search_area = torch.prod(self.target_sz *
self.params.search_area_scale).item()
self.target_scale = math.sqrt(
search_area) / self.img_sample_sz.prod().sqrt()
# Target size in base scale
self.base_target_sz = self.target_sz / self.target_scale
# Setup scale factors
if not self.params.has('scale_factors'):
self.params.scale_factors = torch.ones(1)
elif isinstance(self.params.scale_factors, (list, tuple)):
self.params.scale_factors = torch.Tensor(self.params.scale_factors)
# Setup scale bounds
self.min_scale_factor = torch.max(10 / self.base_target_sz)
self.max_scale_factor = torch.min(self.image_sz / self.base_target_sz)
# Extract and transform sample
init_backbone_feat = self.generate_init_samples(im)
# Initialize classifier
self.init_classifier(init_backbone_feat)
# Initialize IoUNet
if self.params.get('use_iou_net', True):
self.init_iou_net(init_backbone_feat)
out = {'time': time.time() - tic}
return out
