3.3. Mean Curvature Blur

3.3. Mean Curvature Blur
	3. Filtre blur

3.3.1. Prezentare generală

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. Activarea filtrului

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

3.3.3. Opțiuni

Fig. 17.12. „Mean Curvature Blur” filter parameters

Presetări, Previzualizare, Vizualizare divizată: Aceste opțiuni sunt comune filtrelor bazate pe GEGL. ConsultațiSecțiune 2, „Caracteristici obișnuite”.
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

Original image

Iterations = 4

Mean Curvature Blur can be used to denoise an image:

Fig. 17.13. Mean Curvature Blur to denoise

Original image

Iterations = 9