gray op• 数据种类:voxel → voxel
• 调用: import fullseye as fs; fs.ledger.vol_gamma(vol, gamma)(要直接调用实现,import volgray; volgray.vol_gamma(vol, gamma);从台账取用则 ops3d.get("vol_gamma"))
在体自身值域上的伽马(幂律)校正(HALCON `pow_image`)。
> 以下的详细说明为原文 —— 摘要与标题已翻译。
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`.
• 示例数据目录(下载 URL / 许可证) —— 2-D 用 skimage.data(BSD/公有领域)加合成图,3-D 给出真实数据源(Stanford/PDS 等)的下载 URL。
• 算子来历与参考文献 —— 该算子族所依据的研究/方法出处。
• gray_window_level — py -3.11 examples_3d/gray_window_level.py
voxel 作为输入)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 算子登记表。本条目由 tools/opdocs.py md 自动生成(请勿手工编辑)。*
© 2026 Kazufumi Furuse — Fullseye operator documentation. Licensed under Apache-2.0.