### 8.61. Local Threshold

#### 8.61.1. Activating the Filter

This filter is found in the main menu under Colors → Local Threshold….

#### 8.61.2. オプション

図16.233 「Local Threshold」 filter options

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

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

Radius

  Standard deviation of gaussian neighborhood average for computing local contrast. If 0 is used a global threshold is used instead of one based on local contrast.

Antialiasing

  This sets a rough target of levels of accuracy for anti-aliasing, or set to 1 to disable anti-aliasing.

Threshold level

  Thresholding level consists of two values. Change the lower threshold towards 0 to minimize shadows or towards 1.0 to minimize highlights. The high threshold decides the maximum values to include, above this it gets set to 0.

8.60. Hot… |  | 9. 「ツール」メニュー

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