Author

Yong-Long Zhang

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Preprint Aug 2026

GeoDistill-Refine: Silhouette-First Geometry Distillation for Annotation-Free Spacecraft Segmentation

GeoDistill-Refine is presented, a two-stage framework that transfers offline SAM 3 pseudo-masks to a compact segmentation network and a sample-level gate, computed from prompt agreement, the valid-prompt ratio, and pseudo-mask area plausibility, reduces the influence of unreliable pseudo-geometry.

Yong-Long Zhang, Zong-Wu Xie, Yang Liu · 0 citations

Preprint Jul 2026

GAP-GDRNet: Geometry-aware monocular 6D pose estimation for spacecraft using synthetic geometric supervision

GAP-GDRNet is presented, a geometry-aware RGB framework built on GDR-Net for a single-target synthetic spacecraft benchmark and shows consistent gains over the reproduced baseline on textureless and occluded non-spacecraft objects.

Zongwu Xie, Yonglong Zhang, Yifan Yang et al. · 0 citations