The reformulate city-scale 3D grounding as structured constraint reasoning, where description semantics are organized into computable cross-modal constraints over open-vocabulary 3D entities, attributes, and spatial relations, and introduces CitySTAR-3D, an enhanced benchmark that improves semantic coverage, instance c...
Shuai Zhang, Hong-Ye Hou, Qing-He Liu et al.· 0 citations
SkyAnchor treats the existing aerial scene as a fixed scaffold for ground-view registration and scene update instead of jointly reconstructing aerial and ground imagery from scratch, and inserts filtered ground Gaussians while preserving the aerial view, followed by lightweight joint refinement.
Zhuo-Xiao Li, Xin-Yi Liu, Tao-Yu Wu et al.· 0 citations
Abstract. Open-vocabulary 3D segmentation offers an attractive alternative to closed-set scene parsing, yet directly transferring 2D vision-language models to outdoor point clouds remains difficult because projection disrupts geometric continuity and sparse sampling weakens mask quality. This paper presents GeoOpen3D,...
Shuai Zhang, Zhuo Li, Jing Ou et al.· The International Archives o...· 0 citations
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