Preprint
Aug 2026
HiSC: Hierarchical Spatial Clustering Token Compression for Efficient 3D Scene Understanding
A training-free framework for hierarchical spatial clustering token compression in 3D VLMs, which performs hierarchical compression across clusters and within clusters, preserving object instance completeness while retaining fine-grained details for important regions.
Jiuhe Qu, Yingping Liang, Ying Fu
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