gray op• 資料種類:voxel → voxel
• 呼叫: import fullseye as fs; fs.ledger.vol_gamma(vol, gamma)(要直接呼叫實作,import volgray; volgray.vol_gamma(vol, gamma);從台帳取用則 ops3d.get("vol_gamma"))
在體自身值域上的伽瑪(冪律)校正(HALCON `pow_image`)。
> 以下的詳細說明為原文 —— 摘要與標題已翻譯。
Normalises `[min, max] to [0, 1], applies t**gamma`, and maps the
result back to the original `[min, max]` — so the volume's extremes are
fixed points and only the mid-tones move: `gamma > 1` darkens them,
`gamma < 1 brightens them, gamma == 1` is the identity. The transform
is strictly monotone, so intensity *ordering* is always preserved.
A constant volume is returned unchanged (no range to normalise —
see the module docstring's flat-volume note).
Parameters
----------
vol : array_like, shape (D, H, W)
Input volume (coerced to float64; NaN/Inf rejected).
gamma : float
Exponent, `> 0 (fail-closed: gamma <= 0` is not a monotone
intensity map).
Returns
-------
ndarray, shape (D, H, W), float64
The gamma-corrected volume, same `[min, max]` range as the input.
Raises
------
ValueError
Non-3-D / non-finite input, or `gamma <= 0`.
• 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。
• gray_window_level — py -3.11 examples_3d/gray_window_level.py
voxel 作為輸入)voxel_to_mips · voxel_to_mesh · signed_distance_field · to_points · sobel3d · hessian3d · curvature_maps · edt_jfa
gray)vol_window_level · vol_equalize · vol_stretch
*Provenance: volgray.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.