VideoAfford: Grounding 3D Affordance from Human-Object-Interaction Videos via Multimodal Large Language Model
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| Format: | Preprint |
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2026
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| author | Wang, Hanqing Liu, Mingyu Chen, Xiaoyu MA, Chengwei Zhong, Yiming Yin, Wenti Liu, Yuhao Cui, Zhiqing Yuan, Jiahao Dai, Lu Ma, Zhiyuan Xiong, Hui |
| author_facet | Wang, Hanqing Liu, Mingyu Chen, Xiaoyu MA, Chengwei Zhong, Yiming Yin, Wenti Liu, Yuhao Cui, Zhiqing Yuan, Jiahao Dai, Lu Ma, Zhiyuan Xiong, Hui |
| contents | 3D affordance grounding aims to highlight the actionable regions on 3D objects, which is crucial for robotic manipulation. Previous research primarily focused on learning affordance knowledge from static cues such as language and images, which struggle to provide sufficient dynamic interaction context that can reveal temporal and causal cues. To alleviate this predicament, we collect a comprehensive video-based 3D affordance dataset, \textit{VIDA}, which contains 38K human-object-interaction videos covering 16 affordance types, 38 object categories, and 22K point clouds. Based on \textit{VIDA}, we propose a strong baseline: VideoAfford, which activates multimodal large language models with additional affordance segmentation capabilities, enabling both world knowledge reasoning and fine-grained affordance grounding within a unified framework. To enhance action understanding capability, we leverage a latent action encoder to extract dynamic interaction priors from HOI videos. Moreover, we introduce a \textit{spatial-aware} loss function to enable VideoAfford to obtain comprehensive 3D spatial knowledge. Extensive experimental evaluations demonstrate that our model significantly outperforms well-established methods and exhibits strong open-world generalization with affordance reasoning abilities. All datasets and code will be publicly released to advance research in this area. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2602_09638 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | VideoAfford: Grounding 3D Affordance from Human-Object-Interaction Videos via Multimodal Large Language Model Wang, Hanqing Liu, Mingyu Chen, Xiaoyu MA, Chengwei Zhong, Yiming Yin, Wenti Liu, Yuhao Cui, Zhiqing Yuan, Jiahao Dai, Lu Ma, Zhiyuan Xiong, Hui Computer Vision and Pattern Recognition 3D affordance grounding aims to highlight the actionable regions on 3D objects, which is crucial for robotic manipulation. Previous research primarily focused on learning affordance knowledge from static cues such as language and images, which struggle to provide sufficient dynamic interaction context that can reveal temporal and causal cues. To alleviate this predicament, we collect a comprehensive video-based 3D affordance dataset, \textit{VIDA}, which contains 38K human-object-interaction videos covering 16 affordance types, 38 object categories, and 22K point clouds. Based on \textit{VIDA}, we propose a strong baseline: VideoAfford, which activates multimodal large language models with additional affordance segmentation capabilities, enabling both world knowledge reasoning and fine-grained affordance grounding within a unified framework. To enhance action understanding capability, we leverage a latent action encoder to extract dynamic interaction priors from HOI videos. Moreover, we introduce a \textit{spatial-aware} loss function to enable VideoAfford to obtain comprehensive 3D spatial knowledge. Extensive experimental evaluations demonstrate that our model significantly outperforms well-established methods and exhibits strong open-world generalization with affordance reasoning abilities. All datasets and code will be publicly released to advance research in this area. |
| title | VideoAfford: Grounding 3D Affordance from Human-Object-Interaction Videos via Multimodal Large Language Model |
| topic | Computer Vision and Pattern Recognition |
| url | https://arxiv.org/abs/2602.09638 |