probe op• データ種: voxel → signal
• 呼び出し: import fullseye as fs; fs.ledger.vol_wall_thickness(vol, p0, p1, sigma=1.0, threshold=0.1, spacing=None) (実装を直接呼ぶなら import volprobe; volprobe.vol_wall_thickness(vol, p0, p1, sigma=1.0, threshold=0.1, spacing=None)、台帳から引くなら ops3d.get("vol_wall_thickness"))
• 台帳経由の戻り値: fullseye.ledger.vol_wall_thickness(...) は**宣言 out 型 signal の値だけ**を返す(本体は補助情報も返す)。捨てられた側が要るときは fullseye.ledger.vol_wall_thickness.raw(...)、または volprobe.vol_wall_thickness を直接呼ぶ。
プローブ `p0 -> p1` に沿った肉厚 —— 産業用 CT の定番計測。
> 以下の詳細説明は原文のままです —— 要約と見出しは訳出済み。
measurement itself.
Runs :func:vol_edge_probe (all polarities) and pairs consecutive
opposite-polarity edges *rising -> falling* in probe order: each pair is
one traversal of bright material (entry surface -> exit surface), and its
thickness is the difference of the two edges' `t_mm` (physical units —
mm with a spacing, voxels without). A probe crossing both walls of a pipe
therefore yields two thicknesses.
Edges that do not complete a rising -> falling pair (a probe starting or
ending inside material, consecutive same-polarity edges) are ignored,
not paired creatively — the count of returned thicknesses can be smaller
than `len(edges) // 2`. Dark walls on a bright background need an
inverted volume (the pairing convention is bright material).
Returns a list of float thicknesses, in probe order (possibly empty).
Raises `ValueError` on the same malformed inputs as
:func:vol_edge_probe.
• サンプルデータ カタログ(DL URL / ライセンス) — 2-D は skimage.data(BSD/public)+ 合成、3-D は実データ源(Stanford/PDS 等)の DL URL。
• 演算子の来歴・参考文献 — この op 族の元になった研究/手法の出典。
• wall_thickness_probe — py -3.11 examples_3d/wall_thickness_probe.py
signal を入力に取れる)probe)vol_profile_line · vol_edge_probe
*Provenance: volprobe.py — 3D operator registry. この per-op ノートは tools/opdocs.py md が自動生成(手編集しない)。*
© 2026 Kazufumi Furuse — Fullseye operator documentation. Licensed under Apache-2.0.