probe op• 資料種類:voxel → signal
• 呼叫: import fullseye as fs; fs.ledger.vol_wall_thickness(vol, p0, p1, sigma=1.0, threshold=0.1, spacing=None)(要直接呼叫實作,import volprobe; volprobe.vol_wall_thickness(vol, p0, p1, sigma=1.0, threshold=0.1, spacing=None);從台帳取用則 ops3d.get("vol_wall_thickness"))
• 經台帳呼叫的回傳值: fullseye.ledger.vol_wall_thickness(...) 只回傳宣告的 out 型別 signal 的值(底層函式還會回傳輔助資訊)。需要被捨棄的部分時,請用 fullseye.ledger.vol_wall_thickness.raw(...),或直接呼叫 volprobe.vol_wall_thickness。
沿探針 p0 -> p1 的壁厚 —— 工業 CT 計量本身。
> 以下的詳細說明為原文 —— 摘要與標題已翻譯。
Runs 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 vol_edge_probe.
• 範例資料目錄(下載 URL / 授權) —— 2-D 用 skimage.data(BSD/公有領域)加合成圖,3-D 給出真實資料源(Stanford/PDS 等)的下載 URL。
• 運算子來歷與參考文獻 —— 該運算子族所依據的研究/方法出處。
• wall_thickness_probe — py -3.11 examples_3d/wall_thickness_probe.py
signal 作為輸入)probe)vol_profile_line · vol_edge_probe
*Provenance: volprobe.py — 3D 運算子登記表。本條目由 tools/opdocs.py md 自動產生(請勿手動編輯)。*
© 2026 Kazufumi Furuse — Fullseye operator documentation. Licensed under Apache-2.0.