No More Sibling Rivalry: Debiasing Human-Object Interaction Detection

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Hauptverfasser: Yang, Bin, Zhang, Yulin, Zhou, Hong-Yu, Yang, Sibei
Format: Preprint
Veröffentlicht: 2025
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author Yang, Bin
Zhang, Yulin
Zhou, Hong-Yu
Yang, Sibei
author_facet Yang, Bin
Zhang, Yulin
Zhou, Hong-Yu
Yang, Sibei
contents Detection transformers have been applied to human-object interaction (HOI) detection, enhancing the localization and recognition of human-action-object triplets in images. Despite remarkable progress, this study identifies a critical issue-"Toxic Siblings" bias-which hinders the interaction decoder's learning, as numerous similar yet distinct HOI triplets interfere with and even compete against each other both input side and output side to the interaction decoder. This bias arises from high confusion among sibling triplets/categories, where increased similarity paradoxically reduces precision, as one's gain comes at the expense of its toxic sibling's decline. To address this, we propose two novel debiasing learning objectives-"contrastive-then-calibration" and "merge-then-split"-targeting the input and output perspectives, respectively. The former samples sibling-like incorrect HOI triplets and reconstructs them into correct ones, guided by strong positional priors. The latter first learns shared features among sibling categories to distinguish them from other groups, then explicitly refines intra-group differentiation to preserve uniqueness. Experiments show that we significantly outperform both the baseline (+9.18% mAP on HICO-Det) and the state-of-the-art (+3.59% mAP) across various settings.
format Preprint
id arxiv_https___arxiv_org_abs_2509_00760
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle No More Sibling Rivalry: Debiasing Human-Object Interaction Detection
Yang, Bin
Zhang, Yulin
Zhou, Hong-Yu
Yang, Sibei
Computer Vision and Pattern Recognition
Detection transformers have been applied to human-object interaction (HOI) detection, enhancing the localization and recognition of human-action-object triplets in images. Despite remarkable progress, this study identifies a critical issue-"Toxic Siblings" bias-which hinders the interaction decoder's learning, as numerous similar yet distinct HOI triplets interfere with and even compete against each other both input side and output side to the interaction decoder. This bias arises from high confusion among sibling triplets/categories, where increased similarity paradoxically reduces precision, as one's gain comes at the expense of its toxic sibling's decline. To address this, we propose two novel debiasing learning objectives-"contrastive-then-calibration" and "merge-then-split"-targeting the input and output perspectives, respectively. The former samples sibling-like incorrect HOI triplets and reconstructs them into correct ones, guided by strong positional priors. The latter first learns shared features among sibling categories to distinguish them from other groups, then explicitly refines intra-group differentiation to preserve uniqueness. Experiments show that we significantly outperform both the baseline (+9.18% mAP on HICO-Det) and the state-of-the-art (+3.59% mAP) across various settings.
title No More Sibling Rivalry: Debiasing Human-Object Interaction Detection
topic Computer Vision and Pattern Recognition
url https://arxiv.org/abs/2509.00760