3.5. Mean Curvature Blur

3.5. Mean Curvature Blur
	3. 模糊滤镜

3.5.1. Overview

Regularize geometry at a speed proportional to the local mean curvature value: this filter uses the mean curvature algorithm to blur the image preserving edges.

The Mean Curvature algorithm is described on Wikipedia.

3.5.2. Activate the filter

You can find this filter in the image menu under Filters → Blur → Mean Curvature Blur…

3.5.3. Options

图 17.16. “Mean Curvature Blur” filter parameters

Presets, “Input Type”, Clipping, Blending Options, Preview, Split view

	注意
	These options are described in 第 2 节 “Common Features”.

Iterations

Increasing Iterations increases blur.

3.5.4. Examples

Original image

Iterations = 4

Mean Curvature Blur can be used to denoise an image:

图 17.17. Mean Curvature Blur to denoise

Original image

Iterations = 9