arXiv AI By Zengqi Zhao, Zun Wang, Shoubin Yu, Mohit Bansal, Yue Zhang

Representing the Unseen: Rethinking Visual Imagination for Spatial Reasoning

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The paper introduces ImagiRep, a benchmark that tests spatial reasoning using seven question types across two settings, offering RGB and six alternative representations of imagined states. It shows that accurate RGB generation does not guarantee correct spatial reasoning and that different questions benefit from different representations such as depth, panoramic views, or top‑down geometry. Building on these insights, the authors present GEARS, a lightweight strategy that adaptively selects representations at test time, outperforming existing methods and demonstrating that reasoning about unseen states requires more than just RGB generation.

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