10.13. Value Propagate
| 10. Distort filters |

### 10.13. Value Propagate

#### 10.13.1. Overview

This filter is found in Image>Filters/Distorts/Value Propagate

It works on color borders. It spreads pixels that have a Value between selected thresholds, in selected directions.

#### 10.13.2. Options

Preview

  The result of your settings will appear in the Preview without affecting the image until you click on OK.

Propagate Mode

  The examples will be about the following image (zoom x8):

  Figure 16.143. Example

  - More White: Pixels will be propagated from upper Value pixels towards lower Value pixels. So bright areas will enlarge.

    Figure 16.144. More White

  - More Black: Pixels will be propagated from lower Value pixels towards upper Value pixels. So dark areas will enlarge.

    Figure 16.145. More Black

  - Middle Value to Peaks: On a border between the selected thresholds, it blends the two colors.

    Figure 16.146. Middle Value to Peaks

  - Foreground to Peaks: The propagated areas will be filled with the foreground color of the toolbox.

    Figure 16.147. Foreground to Peaks

  - Only Foreground: Only areas with the Foreground color will propagate.

    Figure 16.148. Only Foreground

  - Only Background: Only areas with the Background color will propagate.

  - More Opaque and More Transparent: These commands work like More White and More Black. Propagated areas will be more opaque or more transparent. These commands need an image with an Alpha channel.

Parameters Settings
  Lower / Upper Threshold

    Lower Threshold and Upper Threshold: These commands allow you to set the Value range that will be concerned by Propagate.

  Propagating Rate

    Propagating Rate: That's the propagating amount. The higher it will be the more colored the propagation will be.

  Propagating Direction

    Propagating Direction: You can select one or more directions.

10.12. Video |  | 10.14. Waves