8.61. Local Threshold
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### 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. Možnosti

Slika 16.239. “Local Threshold” filter options

Presets

  “Presets” are a common feature for several Colors commands. You can find its description in Razdelek 8.1.1, “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 antialiasing, or set to 1 to disable antialiasing.

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.

Blending Options, Predogled, Merge filter, Split view

  These are common features described in Razdelek 8.1.1, “Colors Common Features”.

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