fullseye

vol_wall_thickness — 3D 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。

使い方

Wall thicknesses along the probe p0 -> p1 — the industrial-CT

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.

参考(サンプルデータ・文献)

• 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。

実行できる例(この op を実際に呼ぶ検証済みサンプル)

• wall_thickness_probe — py -3.11 examples_3d/wall_thickness_probe.py

型が繋がる次の op(signal を入力に取れる)

fuse_to_voxel

同カテゴリ(probe)

vol_profile_line · vol_edge_probe

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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.

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