8.4. Value Invert
| 8. The “Colors” Menu |

### 8.4. Value Invert

#### 8.4.1. Overview

图 16.122. Example for the “Value invert” filter

Original image

“Value Invert” applied

This filter inverts Value (luminosity) of the active layer or selection. Hue and Saturation will not be affected, although the color will sometimes be slightly different because of round-off error. If you want to invert Hue and Saturation also, use Colors → Invert.

Note that hue and saturation can be distorted quite a bit when applying twice this filter for colors with a high luminosity (for instance, HSV 102°,100%, 98%, a bright green, gives HSV 96°, 100%, 2% after a first application of the filter , and 96°, 100%, 98% after a second application). Thus, you should not expect to be able to apply this filter twice in a row and get back the image you started with.

图 16.123. Example of using this filter twice

Original image

First application of the filter

Second application: the image is not exactly the same as the original one.

#### 8.4.2. Activate the filter

You can access this command from the image menu bar through Colors → Value Invert.

8.3. Invert |  | 8.5. Use GEGL

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