3.5. Mean Curvature Blur

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. Activating the Filter

This filter is found in the main 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, Merge filter, 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