Author

Xiang-Yu Sun

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Preprint Sep 2026

Does the VGGT Family Need All Its Layers?

Which layers of a feed-forward geometry model are needed to preserve both camera poses and dense 3D structure? We study layer redundancy in VGGT, $\pi^3$, and VGGT-$\Omega$: 3,018 pruned configurations, scored on seven camera-pose and dense-geometry metrics across four indoor and outdoor datasets. Four findings follow:...

Feng-Yi Zhang, Holger Caesar, Xiang-Yu Sun et al. · 0 citations

Jul 2026

Scene-SAM3D: Multi-View Scene Asset Generation Without Fine-Tuning

Scene-SAM3D is introduced, a training-free framework that extends SAM3D from single-view object generation to calibrated multi-view scene asset generation, and performs step-efficient latent velocity fusion to integrate multi-view evidence and suppress cross-view conflicts in canonical space.

Yuqi Zhang, Ya-Dan Luo, Xiang-Yu Sun et al. · arXiv.org · 0 citations