integrate_normals — 3D photometric op

• Data kinds: normalmap → image2d

• Call: import photometric; photometric.integrate_normals(normals, mask=None) (or ops3d.get("integrate_normals"))

Usage

Normal field → height field z by Frankot-Chellappa integration. → z, HxW (a constant offset is free; referenced to zero mean).

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)

• photometric_stereo — py -3.11 examples_3d/photometric_stereo.py

Ops the type connects to (they accept image2d as input)

fuse_to_voxel · fit_poly_surface · eval_poly_surface · surface_form_error · background_flatten · polar_unwrap · fit_zernike · matcap_shade

Same category (photometric)

photometric_stereo · surface_normals · render_lambertian

*Provenance: photometric.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.