8.6. Sobel

8.6.1. Översikt

Figur 17.162. Applying example of the Sobel filter

Applying example of the Sobel filter

Ursprunglig bild

Applying example of the Sobel filter

Filter Sobel applied


Sobel's filter detects horizontal and vertical edges separately on a scaled image. Color images are turned into RGB scaled images. As with the Laplace filter, the result is a transparent image with black lines and some rest of colors.

8.6.2. Activating the filter

You can find this filter through FiltersEdge-DetectSobel….

8.6.3. Alternativ

Figur 17.163. Sobel filter options

Sobel filter options

Presets, Preview, Split view
[Notera] Notera

Dessa alternativ beskrivs i Avsnitt 2, ”Gemensamma funktioner”.

Horizontal

Renders near horizontal edges.

Vertical

Renders near vertical edges.

Keep sign

This option allows you to set how the filter will work if you have selected one direction for use only: a flat relief with bumps and hollows will be created.

Clipping

Resultatet av detta filer kan vara större än originalbilden. Med alternativet Justera kommer lagret automatiskt att ändra storlek som nödvändigt när filtret tillämpas. Med alternativet Klipp kommer resultatet att klippas till lagergränsen.