refine_lm — 3D refine op

• Data kinds: voxel × voxel × position → table

• Call: import match3d; match3d.refine_lm(scene, template, init_pos, device='cpu', iters=50, scale=True, gain=False, lam0=0.001, tol=1e-08) (or ops3d.get("refine_lm"))

• GPU: this op has a GPU path (device="cuda")

Usage

Sub-voxel refinement of the translation (plus isotropic scale / intensity gain) by Levenberg-Marquardt.

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)

• refinement — py -3.11 examples_3d/refinement.py

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

fuse_to_voxel · mesh_select_lod

Same category (refine)

refine_peak_newton · refine_translation_lk · refine_rotation_z · icp_point2point_3d · icp_point2plane

*Provenance: match3d.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.