### 4.5. Noise Reduction

#### 4.5.1. Overview

Obrázok 17.42. Example for the “Noise Reduction” filter

Original image

“Noise Reduction” applied. Strength = 5

A simple GEGL filter to reduce noise.

#### 4.5.2. Activating the Filter

This filter is found in the main menu under Filters → Enhance → Noise Reduction….

#### 4.5.3. Options

Obrázok 17.43. Noise Reduction filter options

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

  | Poznámka
  These options are described in Oddiel 2, “Common Features”.

Strength

  Increasing Strength lessens noise, and increases blur: find compromise using the on-canvas preview.

4.4. High Pass |  | 4.6. Red Eye Removal

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