Iwin: Human-Object Interaction Detection via Transformer with Irregular Windows

• URL: http://arxiv.org/abs/2203.10537v1
• Date: Sun, 20 Mar 2022 12:04:50 GMT
• Title: Iwin: Human-Object Interaction Detection via Transformer with Irregular Windows
• Authors: Danyang Tu and Xiongkuo Min and Huiyu Duan and Guodong Guo and Guangtao Zhai and Wei Shen
• Abstract summary: Iwin Transformer is a hierarchical Transformer which progressively performs token representation learning and token agglomeration within irregular windows. The effectiveness and efficiency of Iwin Transformer are verified on the two standard HOI detection benchmark datasets.
• Score: 57.00864538284686
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: This paper presents a new vision Transformer, named Iwin Transformer, which is specifically designed for human-object interaction (HOI) detection, a detailed scene understanding task involving a sequential process of human/object detection and interaction recognition. Iwin Transformer is a hierarchical Transformer which progressively performs token representation learning and token agglomeration within irregular windows. The irregular windows, achieved by augmenting regular grid locations with learned offsets, 1) eliminate redundancy in token representation learning, which leads to efficient human/object detection, and 2) enable the agglomerated tokens to align with humans/objects with different shapes, which facilitates the acquisition of highly-abstracted visual semantics for interaction recognition. The effectiveness and efficiency of Iwin Transformer are verified on the two standard HOI detection benchmark datasets, HICO-DET and V-COCO. Results show our method outperforms existing Transformers-based methods by large margins (3.7 mAP gain on HICO-DET and 2.0 mAP gain on V-COCO) with fewer training epochs ($0.5 \times$).

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