Surg-UniWorld: Unified Surgical World Model with Multimodal Control

A recent paper published on arXiv (2608.06770) presents Surg-UniWorld, a comprehensive surgical world model aimed at creating realistic interactions between instruments and tissues for surgical AI and simulation. This model overcomes the shortcomings of current techniques by introducing a unified multimodal control framework. It develops a Hierarchical Surgical Anchor utilizing initial frame appearance and hierarchical semantic masks to maintain scene identity, anatomical structure, and interaction limits. Subsequently, Anchor-Relative Modality Experts analyze edge, depth, and optical-flow data in relation to the shared anchor, effectively capturing boundary, geometric, and motion details. This method seeks to address challenges such as anatomical distortion, instrument appearance drift, and inconsistencies in interactions. The paper has been announced as a new submission on arXiv.