8.57. Posteriser

Dette verktøyet vektlegg på ein «intelligent» måte pikselfargane i utvalet eller det aktive laget og reduserer talet på fargar slik at biletet likevel beheld karakteristikken sin best mogleg.

8.57.1. Activating the filter

Du har tilgang til denne funksjonen på biletmenyen via FargarPosterisering

8.57.2. Innstillingar

Figur 16.257. Posterize filter dialog

Posterize filter dialog

Presets

«Presets» are a common feature for several Colors commands. You can find its description in Del 8.1.1, «Colors Common Features».

Posteriseringsnivå

Here, «level» means «number of colors per channel ».

This slider and the input boxes with arrowheads allow you to set the number of levels (2-256) in each RGB channel that the tool uses to describe the active layer. The maximum total number of colors is the combination of these levels. A level to 3 will give 33 = 27 colors.

Blending Options, Preview and Split view

These are common features described in Del 8.1.1, «Colors Common Features».

8.57.3. Eksempel

Original image. A Colorcube Analysis of the original image shows a great number of colors.

Original image posterized in 3 levels. The Colorcube Analysis shows 11 colors (less than the possible number 27).