{"url":"/method/tridentnet-block","slug":"tridentnet-block","name":"TridentNet Block","full_name":"TridentNet Block","full_name_withheld":false,"description_markdown":"A **TridentNet Block** is a feature extractor used in object detection models. Instead of feeding in multi-scale inputs like the image pyramid, in a [TridentNet](https://paperswithcode.com/method/tridentnet) block we adapt the backbone network for different scales. These blocks create multiple scale-specific feature maps. With the help of dilated convolutions, different branches of trident blocks have the same network structure and share the\r\nsame parameters yet have different receptive fields. Furthermore, to avoid training objects with extreme scales, a scale-aware training scheme is employed to make each branch specific to a given scale range matching its receptive field. Weight sharing is used to prevent overfitting.","description_state":"present","introduced_year":null,"introduced_by":{"title":"Scale-Aware Trident Networks for Object Detection","paper":"/paper/scale-aware-trident-networks-for-object","first_author":"Yanghao Li","n_authors":4,"url_abs":null,"archive_paper_url":"https://paperswithcode.com/paper/scale-aware-trident-networks-for-object"},"source":{"url":"https://arxiv.org/abs/1901.01892v2","title":"Scale-Aware Trident Networks for Object Detection","url_on_a_paper_host":true},"code_snippet_url":"https://github.com/facebookresearch/detectron2/blob/d250fcc1b66d5a3686c15144480441b7abe31dec/projects/TridentNet/tridentnet/trident_backbone.py#L15","code_snippet_url_on_a_code_host":true,"categories":[{"area":"Computer Vision","area_id":"computer-vision","collection":"Feature Extractors","url":"/methods/category/feature-extractors","pwc_aliases":[]}],"n_papers_tagged":4,"archive_num_papers":4,"papers_newest_first":[{"paper":"/paper/deep-learning-approaches-to-building-rooftop","title":"Deep learning approaches to building rooftop thermal bridge detection from aerial images","date":"2022-12-12","arxiv_id":null,"n_code_links":1,"syntology":null},{"paper":null,"title":"DRPN: Making CNN Dynamically Handle Scale Variation","date":"2021-12-21","arxiv_id":"2112.10963","n_code_links":0,"syntology":null},{"paper":null,"title":"TGA: Two-level Group Attention for Assembly State Detection","date":"2020-10-12","arxiv_id":null,"n_code_links":0,"syntology":null},{"paper":"/paper/scale-aware-trident-networks-for-object","title":"Scale-Aware Trident Networks for Object Detection","date":"2019-01-07","arxiv_id":"1901.01892","n_code_links":4,"syntology":null}],"papers_shown":4,"tasks":[{"task":"/task/object-detection","name":"Object Detection","papers":3},{"task":"/task/object","name":"Object","papers":2},{"task":"/task/object-detection-1","name":"object-detection","papers":2},{"task":"/task/instance-segmentation","name":"Instance Segmentation","papers":1},{"task":"/task/state-estimation","name":"State Estimation","papers":1},{"task":"/task/two","name":"Vocal Bursts Valence Prediction","papers":1}],"tasks_shown":6,"n_tasks":6,"usage_by_year":[{"year":"2019","papers":1},{"year":"2020","papers":1},{"year":"2021","papers":1},{"year":"2022","papers":1}],"row_source":"methods_table","archive":{"source":"pwc-archive (Hugging Face), CC BY-SA 4.0","snapshot":"2025-07-28","archive_url":"https://paperswithcode.com/method/tridentnet-block"},"syntology_read_at":"2026-09-24T18:15:14+00:00"}