4.6. Red Eye Removal
| 4. Enhance Filters |

### 4.6. Red Eye Removal

#### 4.6.1. Overview

Figura 17.40. Example for the “Red Eye Removal” filter

Original image

“Red Eye Removal” applied

The aim of this filter is - guess what - to remove red eyes from an image. Before applying the “Red Eye Removal” you must do a selection (lasso or elliptical) of the boundary of the iris of the eye(s) having a red pupil. After only you can apply the filter on this selection. If you don't make this selection, the filter inform you that: “Manually selecting the eyes may improve the results”.

#### 4.6.2. Activating the Filter

This filter is found in the main menu under Filters → Enhance → Red Eye Removal….

#### 4.6.3. Options

Figura 17.41. “Red Eye Removal” options

Presets, “Input Type”, Clipping, Blending Options, Preview, Merge filter, Split view

  | Nota
  These options are described in Secção 2, “Common Features”.

Threshold

  If you move the cursor of threshold the amount of red color to eliminate will vary.

4.5. Noise Reduction |  | 4.7. Symmetric Nearest Neighbor

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