Mining the Benefits of Two-stage and One-stage HOI Detection

• URL: http://arxiv.org/abs/2108.05077v1
• Date: Wed, 11 Aug 2021 07:38:09 GMT
• Title: Mining the Benefits of Two-stage and One-stage HOI Detection
• Authors: Aixi Zhang, Yue Liao, Si Liu, Miao Lu, Yongliang Wang, Chen Gao, Xiaobo Li
• Abstract summary: Two-stage methods have dominated Human-Object Interaction (HOI) detection for several years. One-stage methods are challenging to make an appropriate trade-off on multi-task learning, i.e., object detection, and interaction classification. We propose a novel one-stage framework with disentangling human-object detection and interaction classification in a cascade manner.
• Score: 26.919979955155664
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Two-stage methods have dominated Human-Object Interaction (HOI) detection for several years. Recently, one-stage HOI detection methods have become popular. In this paper, we aim to explore the essential pros and cons of two-stage and one-stage methods. With this as the goal, we find that conventional two-stage methods mainly suffer from positioning positive interactive human-object pairs, while one-stage methods are challenging to make an appropriate trade-off on multi-task learning, i.e., object detection, and interaction classification. Therefore, a core problem is how to take the essence and discard the dregs from the conventional two types of methods. To this end, we propose a novel one-stage framework with disentangling human-object detection and interaction classification in a cascade manner. In detail, we first design a human-object pair generator based on a state-of-the-art one-stage HOI detector by removing the interaction classification module or head and then design a relatively isolated interaction classifier to classify each human-object pair. Two cascade decoders in our proposed framework can focus on one specific task, detection or interaction classification. In terms of the specific implementation, we adopt a transformer-based HOI detector as our base model. The newly introduced disentangling paradigm outperforms existing methods by a large margin, with a significant relative mAP gain of 9.32% on HICO-Det.

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