5. Color Tools
| 第 14 章 工具 |

## 5. Color Tools

### 5.1. Overview

图 14.138. The Color tools in the Tools menu

Access to the Color tools through the “classical” Tools menu.

图 14.139. The Color tools in the Colors menu

Access through the Colors menu is easier and faster.

With the Color tools you can manipulate image colors in several ways:

- Modify the color balance: 第 5.2 节 “色彩平衡”

- Adjust hue, saturation and lightness levels: 第 5.3 节 “色调-饱和度”

- Render into a greyscale image seen through a colored glass: 第 5.4 节 “单色化”

- Adjust brightness and contrast levels: 第 5.5 节 “亮度-对比度”

- Transform into a black and white image depending on pixel value: 第 5.6 节 “阈值”

- Change the intensity range in a channel: 第 5.7 节 “色阶”

- Change color, brightness, contrast or transparency in a sophisticated way: 第 5.8 节 “曲线”

- Reduce the number of colors: 第 5.9 节 “色调分离”

- Convert all colors to corresponding shades of gray: 第 5.10 节 “去色”

#### 5.1.1. Color Tool Presets

Except Desaturate and Posterize, color tools have presets: saved tool settings that you can retrieve later.

Three elements:

- Presets: this drop-down list shows you the existing presets. Every time you change tool settings, a new preset is automatically saved, with date and hour; you must be aware of that, to preserve your computer memory.

- The cross: clicking on this cross opens a window where you can save current settings under the name you want.

- The small triangle: clicking on this triangle opens a small menu:

  Three options:

  - Import settings from file

  - Export settings to file

  - Manage settings

4.10. The Cage Tool |  | 5.2. 色彩平衡

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