vol_window_level — 3D gray op

• 数据种类:voxel → voxel

• 调用: import fullseye as fs; fs.ledger.vol_window_level(vol, center, width, out_range=(0.0, 1.0))(要直接调用实现,import volgray; volgray.vol_window_level(vol, center, width, out_range=(0.0, 1.0));从台账取用则 ops3d.get("vol_window_level"))

用法

CT 窗宽/窗位(HU 窗)—— 放射科医生每天用的线性重映射。

> 以下的详细说明为原文 —— 摘要与标题已翻译。

Maps the intensity window `[center - width/2, center + width/2]` linearly

onto *out_range* `(lo, hi); voxels below the window saturate at lo`,

voxels above at `hi` (clipped, by design — that is what a CT window

*does*). A bone window and a soft-tissue window on the same Hounsfield

volume make entirely different structures visible. HALCON analogue:

`scale_image` (the linear part), plus the clip.

Parameters

----------

vol : array_like, shape (D, H, W)

Input volume (coerced to float64; NaN/Inf rejected). Hounsfield units

or any other physical scale — *center* / *width* live on the same scale.

center, width : float

Window centre and full width. `width must be > 0` (fail-closed).

out_range : (float, float)

Output `(lo, hi) with lo < hi. Default (0.0, 1.0)`.

Returns

-------

ndarray, shape (D, H, W), float64

The windowed volume, everywhere inside `[lo, hi]`.

Raises

------

ValueError

Non-3-D / non-finite input, `width <= 0`, or a malformed *out_range*.

参考(示例数据・文献)

• 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。

可运行的示例(实际调用该算子并已验证的样例)

• gray_window_level — py -3.11 examples_3d/gray_window_level.py

类型可衔接的下一个算子(可接受 voxel 作为输入)

voxel_to_mips · voxel_to_mesh · signed_distance_field · to_points · sobel3d · hessian3d · curvature_maps · edt_jfa

同类别(gray)

vol_equalize · vol_gamma · 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.