The authors used depth, calibrated camera rays and end-effector anchors to bind local reconstruction features to metric positions relative to the robot.
Robot-relative 3D features improve pretrained manipulation policies across diverse tasks
A lightweight module grounded reconstruction features in metric robot coordinates and improved four vision-language and world-action policy hosts without redesigning their perceptual backbones.
Chinese Tech
Dingsheng Liu · Yangzheng Wu · Mahboubeh Asadi · Zhiyuan Li · Jinbang Huang · Yixin Xiao · +2 more
University of Toronto · Huawei Noah’s Ark Lab · 2012 Labs
Research Digest··2 min read
Liu et al.
Why this paper
From Huawei Noah’s Ark Lab and 2 others
In one line
Spatial Grafting binds frozen 3D reconstruction features to metric robot-relative geometry to improve pretrained robot manipulation policies.
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