Human-in-the-Loop Local Corrections of 3D Scene Layouts via Infilling

We present a novel human-in-the-loop approach to estimate 3D scene layout that uses human feedback from an egocentric standpoint. We study this approach through introduction of a novel local correction task, where users identify local errors and prompt a model to automatically correct them. Building on SceneScript [3], a state-of-the-art framework for 3D scene layout estimation that leverages structured language, we propose a solution that structures this problem as "infilling", a task studied in natural language processing. We train a multi-task version of Sce-neScript that maintains performance on global predictions while significantly improving its local correction ability. We integrate this into a human-in-the-loop system, enabling a user to iteratively refine scene layout estimates via a lowfriction "one-click fix" workflow. Our system enables the final refined layout to diverge from the training distribution, allowing for more accurate modelling of complex layouts.