Quanta AI Labs

Kosmo Research, SJTU & Tsinghua · 3D Reconstruction

GeoWeaver

Reconstructs long RGB video into globally consistent cameras and point clouds without losing local accuracy. A geometric prior model reads overlapping chunks to predict depth, confidence and camera parameters; test-time adaptation then does global Sim(3) alignment and hierarchical refinement. On Oxford Spires it reaches 0.575 degrees rotation error and 4.372m trajectory error.

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