### 8.37. Color Exchange

#### 8.37.1. Overview

图 16.189. “Color Exchange” filter example

Original image

Filter applied with From color RGB (122, 149, 199), To color RGB (255, 0, 0), Red threshold 0.106, Green threshold 0.100, Blue threshold 0.190.

This filter replaces a color with another one.

#### 8.37.2. Activating the Command

You can access this command from the main menu through Colors → Map → Color Exchange….

#### 8.37.3. Options

图 16.190. The “Color Exchange” Dialog

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

  | 注意
  These options are described in 第 8.1.2 节 “Colors Common Features”.

From color

  This is the color you want to replace. To choose a color you can either use the color button to open the Color Picker dialog, or you can use the Color Picker tool to pick a color from your image.

To color

  This is the new color you want to use. To choose a color you can either use the color button to open the Color Picker dialog, or you can use the Color Picker tool to pick a color from your image.

Red Threshold, Green Threshold, Blue Threshold

  These sliders allow you to set how sensitive the red, green and blue components are to differences from the From color. The higher the threshold, the more pixels will be affected.

8.36. Alien Map |  | 8.38. Rotate Colors

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