8.56. Posterize

8.56.1. Overview

شكل 16.224. Example for the “Posterize” filter

Original image

“Posterize” with 3 levels applied

This tool is designed to intelligently weigh the pixel colors of the selection or active layer and reduce the number of colors while maintaining a semblance of the original image characteristics.

8.56.2. Activating the Filter

This filter is found in the main menu under Colors → Posterize….

8.56.3. Options

شكل 16.225. Posterize filter dialog

Presets, Blending Options, Preview, Merge filter, Split view

	ياداشت
	These options are described in قسمت 8.1.2, “Colors Common Features” .

Posterize Levels

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.