3.5. Selektiv gaussisk sløring

3.5. Selektiv gaussisk sløring
	3. Filtre til sløring

3.5.1. Overview

Figur 17.18. The Selective Gaussian Blur filter

Oprindelig

Blur applied

Contrary to the other blur plug-ins, the Selective Gaussian Blur plug-in doesn't act on all pixels: blur is applied only if the difference between its value and the value of the surrounding pixels is less than a defined Delta value. So, contrasts are preserved because difference is high on contrast limits. It is used to blur a background so that the foreground subject will stand out better. This add a sense of depth to the image with only a single operation.

3.5.2. Activate the filter

You can find this filter in the image menu under Filters → Blur → Selective Gaussian Blur…

3.5.3. Indstillinger

Figur 17.19. “Selective Gaussian” filter parameters settings

Presets, Preview, Split view: These options are common to GEGL-based filters. Please refer to Afsnit 2, “Fælles funktioner”.
Aux. input: If there is another image on screen, you can select it as auxiliary input.
Sløringsradius: Here you can set the blur intensity, in pixels.
Max. delta: Here you can set the maximum difference (0-255) between the pixel value and the surrounding pixel values. Above this Delta, blur will not be applied to that pixel.