polar_unwrap — 3D `curvilinear` op

• Data kinds: image2d → image2d

• Call: import match3d; match3d.polar_unwrap(image, center=None, r_in=0.0, r_out=None, ntheta=360, nr=64, device='cpu') (or ops3d.get("polar_unwrap"))

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

Usage

Unwrap an image's annulus or disc into a (θ × r) rectangle (industrial: inspecting labels, rings and bodies of revolution).

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)

• curvilinear_proj — py -3.11 examples_3d/curvilinear_proj.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 · fit_zernike · matcap_shade · antialias

Same category (`curvilinear`)

cylinder_unwrap · fit_zernike

*Provenance: match3d.py — 3D operator registry. This per-op note is generated by tools/opdocs.py md (do not hand-edit).*

polar_unwrap — 3D curvilinear op