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在视觉基础模型中探索空间状态表示方式

原文标题 · Probing Spatial State Representations in Visual Foundation Models

作者:Baiqiao Yin、Zhongang Cai、Ruisui Wang | 观察者只能看到周围世界的一部分,但必须持续关注当前视野之外的景象。因此,空间感知不仅仅涉及识别单个图像,还需要一种能够随着物体的移动而不断更新并用于指导行为的空间状态。视觉基础模型是否能够提供支持这种状态的表征呢?我们通过研究这个问题来探讨这一问题。

来源:arXiv cs.AI/CL/LG · arxiv.org

正文为英文,可一键机器翻译(仅首次需要等待)

Computer Science > Computer Vision and Pattern Recognition

Title: Probing Spatial State Representations in Visual Foundation Models

Abstract: An observer sees only part of the surrounding world, yet must keep track of what lies beyond the current view. Spatial perception therefore involves more than recognizing individual images: it calls for a persistent spatial state that is updated under self-motion and used to guide action. Do visual foundation models provide representations that support such a state? We study this question through four levels of spatial capability---spatial structure, object persistence, predictive spatial update, and actionability---using frozen-feature probes on ten representations under streaming egocentric observations of static indoor environments. The resulting capability profiles vary across tasks, network layers, and prefix lengths: strong readout of the visible scene does not ensure accurate object persistence or future-feature retrieval. Matched controls separate readout accuracy from reliance on visual history and motion. Native future prediction retains recoverable spatial structure, but a spatial reader trained on real features does not transfer to predicted features unchanged. Finally, goal-dependent candidate selection does not establish reliable continuous action utility: predicted actions respond to goal changes, yet supplying the correct goal does not reliably improve progress. Across the four levels, object persistence and actionability build on camera-pose readout, whereas feature prediction builds on visible-scene readout. Together, these findings motivate evaluating spatial representations not only by what can be decoded from them, but by whether that information is maintained beyond observation, updated predictively, and used for goal-directed action.

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