def _make_detr( backbone_name: str, num_queries=100, mask=False, qa_dataset=None, predict_final=False, text_encoder="roberta-base", contrastive_align_loss=True, ): hidden_dim = 256 backbone = _make_backbone(backbone_name, mask) transformer = Transformer(d_model=hidden_dim, return_intermediate_dec=True, text_encoder_type=text_encoder) detr = MDETR( backbone, transformer, num_classes=255, num_queries=num_queries, qa_dataset=qa_dataset, predict_final=predict_final, contrastive_align_loss=contrastive_align_loss, contrastive_hdim=64, ) if mask: return DETRsegm(detr) return detr
def _make_detr(backbone_name: str, dilation=False, num_classes=91, mask=False): hidden_dim = 256 backbone = Backbone(backbone_name, train_backbone=True, return_interm_layers=mask, dilation=dilation) pos_enc = PositionEmbeddingSine(hidden_dim // 2, normalize=True) backbone_with_pos_enc = Joiner(backbone, pos_enc) backbone_with_pos_enc.num_channels = backbone.num_channels transformer = Transformer(d_model=hidden_dim, return_intermediate_dec=True) detr = DETR(backbone_with_pos_enc, transformer, num_classes=num_classes, num_queries=100) if mask: return DETRsegm(detr) return detr
def build(args): num_classes = 20 if args.dataset_file != 'coco' else 91 if args.dataset_file == "coco_panoptic": num_classes = 250 device = torch.device(args.device) backbone = build_backbone(args) transformer = build_transformer(args) model = DETR( args, backbone, transformer, num_classes=num_classes, num_queries=args.num_queries, aux_loss=args.aux_loss, ) if args.masks: model = DETRsegm(model, freeze_detr=(args.frozen_weights is not None)) matcher = build_matcher(args) weight_dict = {'loss_ce': 1, 'loss_bbox': args.bbox_loss_coef} weight_dict['loss_giou'] = args.giou_loss_coef if args.masks: weight_dict["loss_mask"] = args.mask_loss_coef weight_dict["loss_dice"] = args.dice_loss_coef # TODO this is a hack if args.aux_loss: aux_weight_dict = {} for i in range(args.dec_layers - 1): aux_weight_dict.update( {k + f'_{i}': v for k, v in weight_dict.items()}) weight_dict.update(aux_weight_dict) losses = ['labels', 'boxes', 'cardinality'] if args.masks: losses += ["masks"] criterion = SetCriterion(num_classes, matcher=matcher, weight_dict=weight_dict, eos_coef=args.eos_coef, losses=losses) criterion.to(device) postprocessors = {'bbox': PostProcess()} if args.masks: postprocessors['segm'] = PostProcessSegm() if args.dataset_file == "coco_panoptic": is_thing_map = {i: i <= 90 for i in range(201)} postprocessors["panoptic"] = PostProcessPanoptic(is_thing_map, threshold=0.85) return model, criterion, postprocessors
def build(args): # the `num_classes` naming here is somewhat misleading. # it indeed corresponds to `max_obj_id + 1`, where max_obj_id # is the maximum id for a class in your dataset. For example, # COCO has a max_obj_id of 90, so we pass `num_classes` to be 91. # As another example, for a dataset that has a single class with id 1, # you should pass `num_classes` to be 2 (max_obj_id + 1). # For more details on this, check the following discussion # https://github.com/facebookresearch/detr/issues/108#issuecomment-650269223 num_classes = 20 if args.dataset_file != 'coco' else 91 if args.dataset_file == "coco_panoptic": # for panoptic, we just add a num_classes that is large enough to hold # max_obj_id + 1, but the exact value doesn't really matter num_classes = 250 device = torch.device(args.device) backbone = build_backbone(args) if int(os.environ.get("cross_transformer", 0)): transformer = build_cross_transformer(args) elif int(os.environ.get("sparse_transformer", 0)): transformer = build_sparse_transformer(args) elif int(os.environ.get("linear_transformer", 0)): transformer = build_linear_transformer(args) else: transformer = build_transformer(args) model = DETR( backbone, transformer, num_classes=num_classes, num_queries=args.num_queries, aux_loss=args.aux_loss, ) if args.masks: model = DETRsegm(model, freeze_detr=(args.frozen_weights is not None)) matcher = build_matcher(args) weight_dict = {'loss_ce': 1, 'loss_bbox': args.bbox_loss_coef} weight_dict['loss_giou'] = args.giou_loss_coef if args.masks: weight_dict["loss_mask"] = args.mask_loss_coef weight_dict["loss_dice"] = args.dice_loss_coef # TODO this is a hack if args.aux_loss: aux_weight_dict = {} for i in range(args.dec_layers - 1): aux_weight_dict.update( {k + f'_{i}': v for k, v in weight_dict.items()}) weight_dict.update(aux_weight_dict) losses = ['labels', 'boxes', 'cardinality'] if args.masks: losses += ["masks"] criterion = SetCriterion(num_classes, matcher=matcher, weight_dict=weight_dict, eos_coef=args.eos_coef, losses=losses) criterion.to(device) postprocessors = {'bbox': PostProcess()} if args.masks: postprocessors['segm'] = PostProcessSegm() if args.dataset_file == "coco_panoptic": is_thing_map = {i: i <= 90 for i in range(201)} postprocessors["panoptic"] = PostProcessPanoptic(is_thing_map, threshold=0.85) return model, criterion, postprocessors
def __init__(self, cfg): super().__init__() self.device = torch.device(cfg.MODEL.DEVICE) self.num_classes = cfg.MODEL.DETR.NUM_CLASSES self.mask_on = cfg.MODEL.MASK_ON hidden_dim = cfg.MODEL.DETR.HIDDEN_DIM num_queries = cfg.MODEL.DETR.NUM_OBJECT_QUERIES # Transformer parameters: nheads = cfg.MODEL.DETR.NHEADS dropout = cfg.MODEL.DETR.DROPOUT dim_feedforward = cfg.MODEL.DETR.DIM_FEEDFORWARD enc_layers = cfg.MODEL.DETR.ENC_LAYERS dec_layers = cfg.MODEL.DETR.DEC_LAYERS pre_norm = cfg.MODEL.DETR.PRE_NORM # Loss parameters: giou_weight = cfg.MODEL.DETR.GIOU_WEIGHT l1_weight = cfg.MODEL.DETR.L1_WEIGHT deep_supervision = cfg.MODEL.DETR.DEEP_SUPERVISION no_object_weight = cfg.MODEL.DETR.NO_OBJECT_WEIGHT N_steps = hidden_dim // 2 d2_backbone = MaskedBackbone(cfg) backbone = Joiner(d2_backbone, PositionEmbeddingSine(N_steps, normalize=True)) backbone.num_channels = d2_backbone.num_channels transformer = Transformer( d_model=hidden_dim, dropout=dropout, nhead=nheads, dim_feedforward=dim_feedforward, num_encoder_layers=enc_layers, num_decoder_layers=dec_layers, normalize_before=pre_norm, return_intermediate_dec=deep_supervision, ) self.detr = DETR(backbone, transformer, num_classes=self.num_classes, num_queries=num_queries, aux_loss=deep_supervision) if self.mask_on: frozen_weights = cfg.MODEL.DETR.FROZEN_WEIGHTS if frozen_weights != '': print("LOAD pre-trained weights") weight = torch.load( frozen_weights, map_location=lambda storage, loc: storage)['model'] new_weight = {} for k, v in weight.items(): if 'detr.' in k: new_weight[k.replace('detr.', '')] = v else: print(f"Skipping loading weight {k} from frozen model") del weight self.detr.load_state_dict(new_weight) del new_weight self.detr = DETRsegm(self.detr, freeze_detr=(frozen_weights != '')) self.seg_postprocess = PostProcessSegm self.detr.to(self.device) # building criterion matcher = HungarianMatcher(cost_class=1, cost_bbox=l1_weight, cost_giou=giou_weight) weight_dict = {"loss_ce": 1, "loss_bbox": l1_weight} weight_dict["loss_giou"] = giou_weight if deep_supervision: aux_weight_dict = {} for i in range(dec_layers - 1): aux_weight_dict.update( {k + f"_{i}": v for k, v in weight_dict.items()}) weight_dict.update(aux_weight_dict) losses = ["labels", "boxes", "cardinality"] if self.mask_on: losses += ["masks"] self.criterion = SetCriterion( self.num_classes, matcher=matcher, weight_dict=weight_dict, eos_coef=no_object_weight, losses=losses, ) self.criterion.to(self.device) pixel_mean = torch.Tensor(cfg.MODEL.PIXEL_MEAN).to(self.device).view( 3, 1, 1) pixel_std = torch.Tensor(cfg.MODEL.PIXEL_STD).to(self.device).view( 3, 1, 1) self.normalizer = lambda x: (x - pixel_mean) / pixel_std self.to(self.device)