arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2509.00210cs.CVcs.AI

超越像素:通过时空对齐为基于视频的具身模型引入几何-语义世界先验

Beyond Pixels: Introducing Geometric-Semantic World Priors for Video-based Embodied Models via Spatio-temporal Alignment

Jinzhou Tang, Jusheng zhang, Sidi Liu, Waikit Xiu, Qinhan Lv, Xiying Li

AI总结:

针对视觉语言模型在具身智能任务中时空推理能力不足的问题,提出含三大组件的VEME跨模态对齐方法,通过引入几何-语义世界先验提升动态环境推理规划能力,在相关基准上实现1%-3%的性能提升。

摘要:

在未知环境中完成复杂任务的深度学习模型实现类人推理,仍是具身智能领域的关键挑战。先进的视觉语言模型(VLM)虽擅长静态场景理解,但因对细粒度时空线索建模不足、缺乏对物理世界的理解,其在时空推理以及适配任务导向导航、具身问答(EQA)等动态开放集任务方面仍存在局限。为解决这一问题,我们提出VEME,这是一种新型跨模态对齐方法,通过学习以自我为中心、以经验为核心的世界模型,提升模型在未见过场景中的泛化能力。我们的框架包含三个核心组件:(1)跨模态对齐框架,将物体、空间表征、视觉语义与时空线索相关联,增强VLM的上下文学习能力;(2)由世界嵌入激活的动态隐式认知地图,可实现与任务相关的几何-语义记忆召回;(3)基于指令的导航与推理框架,利用具身先验进行长期规划与高效探索。通过嵌入具备几何感知的时空情景经验,我们的方法显著提升了动态环境中的推理与规划能力。在VSI-Bench和VLN-CE上的实验结果表明,与传统方法相比,该方法在准确率和探索效率上提升了1%-3%。

英文摘要:

Achieving human-like reasoning in deep learning models for complex tasks in unknown environments remains a critical challenge in embodied intelligence. While advanced vision-language models (VLMs) excel in static scene understanding, their limitations in spatio-temporal reasoning and adaptation to dynamic, open-set tasks like task-oriented navigation and embodied question answering (EQA) persist due to inadequate modeling of fine-grained spatio-temporal cues and physical world comprehension. To address this, we propose VEME, a novel cross-modal alignment method that enhances generalization in unseen scenes by learning an ego-centric, experience-centered world model. Our framework integrates three key components: (1) a cross-modal alignment framework bridging objects, spatial representations, and visual semantics with spatio-temporal cues to enhance VLM in-context learning; (2) a dynamic, implicit cognitive map activated by world embedding to enable task-relevant geometric-semantic memory recall; and (3) an instruction-based navigation and reasoning framework leveraging embodied priors for long-term planning and efficient exploration. By embedding geometry-aware spatio-temporal episodic experiences, our method significantly improves reasoning and planning in dynamic environments. Experimental results on VSI-Bench and VLN-CE demonstrate 1%-3% accuracy and exploration efficiency improvement compared to traditional approaches.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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