face_normals — 3D mesh_process op

• Data kinds: mesh → normals

• Call: import mesh_props; mesh_props.face_normals(mesh) -> 'np.ndarray' (or ops3d.get("face_normals"))

Usage

The face normals of a triangle mesh (the unit normal of each triangle). → (M,3).

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)

• mesh_props — py -3.11 examples_3d/mesh_props.py

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

icp_point2plane · compute_fpfh · shot_descriptor · fuse_to_voxel · reflect · refract · normal_consistency · ransac_cylinder

Same category (mesh_process)

laplacian_smooth · taubin_smooth · decimate_qem · vertex_normals · mesh_area · vertex_curvature

*Provenance: mesh_props.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.