Spatial Grafting: Grounding 3D Features for Flow-Matching Robot Policies
Pretrained robot manipulation policies such as vision-language-action models (VLAs) or world-action models (WAMs) leave interaction-relevant metric geometry implicit. Recent breakthroughs in spatial reconstruction can supply the necessary geometry reliably, but their features describe local shape without stating where...
Ding-Sheng Liu, Yang-Zheng Wu, Mahboubeh Asadi et al.
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