voxel_grid_downsample — 3D preprocess op

• Data kinds: points → points

• Call: import pcl_filter; pcl_filter.voxel_grid_downsample(points, voxel_size: 'float') (or ops3d.get("voxel_grid_downsample"))

Usage

Thin a point set on a lattice of edge voxel_size, collapsing each cell to one centroid point (deterministic).

Background guides (the physics and conventions behind this op)

• depth_sensors — 深度センサの知識 — 測距原理・実機の値・欠測の出方

References (sample data, literature)

• Sample-data catalog (download URLs / licences) — 2-D uses skimage.data (BSD/public domain) plus synthetic images; 3-D lists download URLs for real data sources (Stanford, PDS, …).

• Operator provenance and references — the sources of the research/methods this op family came from.

Runnable examples (verified samples that actually call this op)

• pointcloud_downsampling — py -3.11 examples_3d/pointcloud_downsampling.py

Ops the type connects to (they accept points as input)

points_to_voxel · gaussians_to_voxel · estimate_point_normals · to_points · match_points_ncc · match_pca · moment_axes · icp_point2point_3d

Same category (preprocess)

statistical_outlier_removal · radius_outlier_removal · mls_smooth · volume_downsample

*Provenance: pcl_filter.py — 3D operator registry. This per-op note is generated by tools/opdocs.py md (do not hand-edit).*

© 2026 Kazufumi Furuse — Fullseye operator documentation. Licensed under Apache-2.0.