arxivcs.LGcs.CG2026-07-15
HyperShadow: A Benchmark for Detecting 3D Projections of Higher-Dimensional Spatial Objects
Machine-learning datasets labelled "4D" universally denote three spatial dimensions plus time. We introduce HyperShadow, the first public benchmark in which the fourth, fifth, and sixth dimensions are spatial: the task is to decide whether a 3D point cloud is a native three-dimen…