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About this paper

Qijian Tian, Jiayu Ying, Ke Fan, Lizhuang Ma, Xin Tan

V2W lets a model explore a reconstructed scene to gather visual and spatial evidence before answering questions. It combines estimated geometry and camera poses with language-grounded objects, exposed through visual and linguistic interfaces. On MindCube-Tiny, trained V2W with Qwen2.5-VL-7B scores 90.8% overall versus SpatialDreamer’s reported 84.9%; it ties on Rotation and scores lower on Around, in a non-controlled comparison.

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