What if Agents Could Imagine? Reinforcing Open-Vocabulary HOI Comprehension through Generation

Fuente: arXiv
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Autori principali: Yuan, Zhenlong, Wang, Yue, Zhang, Dapeng, Cui, Kejin, Chen, Rui, Tang, Jing, Sun, Lei, Yu, Hongwei, Qian, Chengxuan, Chu, Xiangxiang, Li, Shuo, Zhou, Yuyin
Natura: Preprint
Pubblicazione: 2026
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author Yuan, Zhenlong
Wang, Yue
Zhang, Dapeng
Cui, Kejin
Chen, Rui
Tang, Jing
Sun, Lei
Yu, Hongwei
Qian, Chengxuan
Chu, Xiangxiang
Li, Shuo
Zhou, Yuyin
author_facet Yuan, Zhenlong
Wang, Yue
Zhang, Dapeng
Cui, Kejin
Chen, Rui
Tang, Jing
Sun, Lei
Yu, Hongwei
Qian, Chengxuan
Chu, Xiangxiang
Li, Shuo
Zhou, Yuyin
contents Multimodal Large Language Models have shown promising capabilities in bridging visual and textual reasoning, yet their reasoning capabilities in Open-Vocabulary Human-Object Interaction (OV-HOI) are limited by cross-modal hallucinations and limited viewpoints of images. To address this, we propose ImagineAgent, an agentic framework that integrates cognitive mapping, tool-augmented reinforcement learning (RL), and generative world modeling for robust OV-HOI understanding. Specifically, we first propose an innovative CoT dataset named hicodet-6K for supervised fine-tuning (SFT), which effectively bridges the perception-to-cognition gap by structuring perceived entities into interaction pairs for comprehensive predictions. Subsequently, we develop a multimodal tool library integrating online retrieval, image cropping, and generative modeling, enabling the agent to dynamically augment reasoning with domain-specific tools to resolve visual-semantic ambiguities and hallucinations during inference. Moreover, we incorporate a generative model to reconstruct alternative viewpoints, enabling the agent to 'imagine' under limited viewpoints. Finally, we propose a composite reward mechanism to jointly optimize prediction accuracy and tool efficiency. Evaluations on both SWIG-HOI and HICO-DET datasets demonstrate that our method achieves state-of-the-art performance while requiring merely 36.7% of the training data compared to existing methods, validating our robustness, empirical effectiveness and efficiency.
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id arxiv_https___arxiv_org_abs_2602_11499
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle What if Agents Could Imagine? Reinforcing Open-Vocabulary HOI Comprehension through Generation
Yuan, Zhenlong
Wang, Yue
Zhang, Dapeng
Cui, Kejin
Chen, Rui
Tang, Jing
Sun, Lei
Yu, Hongwei
Qian, Chengxuan
Chu, Xiangxiang
Li, Shuo
Zhou, Yuyin
Computer Vision and Pattern Recognition
Multimodal Large Language Models have shown promising capabilities in bridging visual and textual reasoning, yet their reasoning capabilities in Open-Vocabulary Human-Object Interaction (OV-HOI) are limited by cross-modal hallucinations and limited viewpoints of images. To address this, we propose ImagineAgent, an agentic framework that integrates cognitive mapping, tool-augmented reinforcement learning (RL), and generative world modeling for robust OV-HOI understanding. Specifically, we first propose an innovative CoT dataset named hicodet-6K for supervised fine-tuning (SFT), which effectively bridges the perception-to-cognition gap by structuring perceived entities into interaction pairs for comprehensive predictions. Subsequently, we develop a multimodal tool library integrating online retrieval, image cropping, and generative modeling, enabling the agent to dynamically augment reasoning with domain-specific tools to resolve visual-semantic ambiguities and hallucinations during inference. Moreover, we incorporate a generative model to reconstruct alternative viewpoints, enabling the agent to 'imagine' under limited viewpoints. Finally, we propose a composite reward mechanism to jointly optimize prediction accuracy and tool efficiency. Evaluations on both SWIG-HOI and HICO-DET datasets demonstrate that our method achieves state-of-the-art performance while requiring merely 36.7% of the training data compared to existing methods, validating our robustness, empirical effectiveness and efficiency.
title What if Agents Could Imagine? Reinforcing Open-Vocabulary HOI Comprehension through Generation
topic Computer Vision and Pattern Recognition
url https://arxiv.org/abs/2602.11499