Physical Canvas: A Vision Tactile World Model For Robot Policy Evaluation And Learning

Zebin Xing, Yuhang Zheng, Yupeng Zheng, Yichen Zhang, Zichen Li, Shangqing Zhou, Yujie Zang, Yuchen Liu · 2026 · arXiv

DOI: 10.48550/arXiv.2610.28613 · open-access PDF

Abstract

Evaluating and post-training robot policies through physical interaction is costly and difficult to scale, motivating action-conditioned world models as interactive simulators. However, visually plausible predictions can misrepresent contact dynamics, providing unreliable feedback for policy evaluation and learning. We introduce PhysCanvas, a state-consistent visuo-tactile world model for contact-rich robot manipulation. PhysCanvas unifies multi-view RGB, tactile images, marker displacement, task state, and actions within a unified vision space. All modalities share a video VAE and pretrained

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