curvilinear op• Data kinds: voxel → voxel
• Call: import fullseye as fs; fs.ledger.cylinder_unwrap(vol, center=None, r_in=0.0, r_out=None, ntheta=180, nr=32, device='cpu') (to call the implementation directly, import match3d; match3d.cylinder_unwrap(vol, center=None, r_in=0.0, r_out=None, ntheta=180, nr=32, device='cpu'); from the registry, ops3d.get("cylinder_unwrap"))
• GPU: this op has a GPU path (device="cuda")
Unwrap the cylindrical surface of a voxel volume into (height × θ × r) — for inspecting the inner and outer walls of cylindrical parts and pipes. The axis is z (the D axis).
> The detailed description below is the original text — the summary and the headings are translated.
θ 軸は endpoint 無しの周期グリッド(polar_unwrap と同じ 2026-08-30 修正)。
Raises ValueError: 入力に NaN/Inf/float32 桁あふれがある場合。
引数: `vol は (D,H,W)、center=(cy, cx)` は各 z スライス内の (行, 列)(既定は
スライス中心)。`r_in〜r_out(voxel、既定 min(H,W)/2 − 1)を nr` 等分、角度を
`ntheta 等分。出力 (D, ntheta, nr)` float32: 軸 0 は z(高さ、入力と同じ)、行 k の角度
`θ = k·2π/ntheta、列 j の半径。サンプル点は (z, cy + r sinθ, cx + r cosθ)`、volume 外は 0。
D, H, W が 1 の軸は正規化で 0 除算になる(`polar_unwrap` と違い検査は無い)。
後段: `[:, :, j]` を取れば半径 j の円筒面が (D×θ) の 2-D 画像になり、2-D の傷検査・
`ncc_locate` が使える。
• 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.
• curvilinear_proj — py -3.11 examples_3d/curvilinear_proj.py
voxel as input)voxel_to_mips · voxel_to_mesh · signed_distance_field · to_points · sobel3d · hessian3d · curvature_maps · edt_jfa
curvilinear)*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.