### 4.5. Noise Reduction

#### 4.5.1. 概観

図17.42 Example for the 「Noise Reduction」 filter

元画像

「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. オプション

図17.43 Noise Reduction filter options

Presets, 「Input Type」, Clipping, Blending Options, プレビュー, Merge filter, Split view

  | 注記
  These options are described in 「Common Features」.

Strength

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

4.4. High Pass |  | 4.6. 赤目除去...

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