DSM heightmap mesh built from the USGS 3DEP point cloud, colored with NAIP aerial. Radius ±1.4km. Spikes flattened (top-hat despike 3×3/3m). No splat → no smear/floaters.
—triangles
—vertices
±1.4kmradius
Still missing (later steps): • Buildings "melt" — no vertical walls yet → City3D LoD2 • Ponds/lakes = black holes (LiDAR doesn't return off water) • Facade texture — aerial imagery can't see walls