### 9.6. Aşındır

#### 9.6.1. Genel Görünüm

Şekil 17.197. Aşındır süzgeci uygulama örneği

Özgün görüntü

Filter applied

This filter widens and enhances dark areas of the active layer or selection.

For every image pixel, it brings the pixel Value (luminosity) into line with the lowest Value (the darkest) of the 8 neighboring pixels (3×3 matrix). So, a dark pixel is added around dark areas. An isolated pixel on a brighter background will be changed to a big “pixel”, composed of 9 pixels, and that will create some noise in the image.

In this image, the studied pixel has a red border and the studied 3×3 matrix has a green border. Thus when the pixel marked with “I” is inside the green border, the studied pixel turns to black.

A larger dark area will expand by one pixel in all directions:

Süzgeç 3 kez uygulanmıştır.

On more complex images, dark areas are widened and enhanced the same, and somewhat pixelated. Here, the filter was applied 3 times:

Of course, if background is darker than foreground, it will cover the whole image.

#### 9.6.2. Süzgeci Etkinleştirme

Bu süzgeç ana menüdeSüzgeçler → Genel → Aşındır altında bulunur.

#### 9.6.3. Örnekler

Şekil 17.198. Aşındır metin

9.5. Genişlet |  | 9.7. GEGL Grafik

Report a bug in GIMP Belgelendirme hatası