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Automatically detecting human-object interaction by an instance part-level attention deep framework
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AI
DOI：10.1016/j.patcog.2022.109110.png)
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Abstract
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Automatically detecting human-object interactions (HOIs) from an image is a very important but chal-lenging task in computer vision. One of the significant problems in HOI detection is that similar human -object interactions are difficult to distinguish. Recently, many instance-centric HOI detection schemes, based on appearance features and coarse spatial information, have been proposed. These methods, how-ever, lack the capacity of capturing and analyzing the fine-grained context between human poses and object parts, which plays a crucial role in HOI detection. To address these problems, we propose a novel instance part-level attention deep framework for HOI detection. Specifically, our approach consists of a human/object-part detection phase and an HOI detection phase. In the former phase, a part-level vi-sual pattern estimation model is designed for capturing the fine-grained human body parts and object parts. In the latter phase, a self-attention-based deep network is proposed to learn the visual compos-ite around the human-object pair that implicitly expresses the consistent spatial, scale, co-occurrence, and viewpoint relationships among human body parts and object parts across images, which are effec-tive for predicting HOI. To the best of our knowledge, we are the first to propose a framework where the fine-grained part-level mutual context of a human-object pair is extracted to improve HOI detec-tion. By comparing our approach with state-of-the-art HOI detection methods on benchmark datasets, we demonstrated that our proposed framework outperformed the existing HOI detection methods, such as significantly improving the performance of part-level visual pattern estimation, HOI detection, and the quality of the self-attention-based deep network structure.(c) 2022 Elsevier Ltd. All rights reserved.
Keywords:
Human -object interaction
Instance part -level correlations
Self -attention -based model
Image context
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