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. 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 | |
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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