3.3. Mean Curvature Blur

3.3. Mean Curvature Blur
	3. Weichzeichnen

3.3.1. Wirkungsweise

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.

Mean Curvature algorithm is describes in Wikipedia

3.3.2. Filteraufruf

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

3.3.3. Eigenschaften

Abbildung 17.12. „Mean Curvature Blur“ filter parameters

Einstellungen, Vorschau, Ansicht teilen: Diese Optionen sind in allen GEGL-basierten Filtern vorhanden, siehe Abschnitt 2, „Gemeinsame Funktionsmerkmale“.
Iterations: Increasing Iterations increases blur.
Clipping: The result of this filter can be larger than the original image. With the default Adjust option, the layer will be automatically resized as necessary when the filter is applied. With the Clip option the result will be clipped to the layer boundary.

3.3.4. Examples

Ausgangsbild

Iterations = 4

Mean Curvature Blur can be used to denoise an image:

Abbildung 17.13. Mean Curvature Blur to denoise

Ausgangsbild

Iterations = 9