CrossFit-GS on arXiv: out-of-fold pose estimation cuts drift in COLMAP-free 3DGS

kwangmoo_yi · x · 2026-10-22

The author shares the arXiv link (2610.28190) for CrossFit-GS, a deferred-commitment progressive framework that mitigates cumulative trajectory drift in pose-free 3D Gaussian Splatting.

Core mechanism: interleaved sequence subsets with two complementary submaps; each candidate pose is cross-refined against a frozen opposite submap that never saw that frame.
Checkerboard validation and spatial-coverage safeguards reject unreliable updates; after refinement, intermediate submaps are discarded and the final representation is retrained from scratch with fixed poses.
Consistently beats prior methods on pose estimation and novel-view synthesis across multiple benchmarks.

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CrossFit-GS on arXiv: out-of-fold pose estimation cuts drift in COLMAP-free 3DGS

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