3.3. Desfocagem gaussiana

3.3.1. Visão-geral

Figura 17.11. Exemplo para o filtro Desfocagem gaussiana

Exemplo para o filtro “Desfocagem gaussiana”


Exemplo para o filtro “Desfocagem gaussiana”

Desfocagem aplicada

The Gaussian Blur plug-in acts on each pixel of the active layer or selection, setting its Value to the average of all pixel Values present in a radius defined in the dialog. A higher Value will produce a higher amount of blur. The blur can be set to act in one direction more than the other by clicking the Chain Button so that it is broken, and altering the radius. GIMP supports two implementations of Gaussian Blur: FIR and RLE. They both produce the same results, but each one can be faster in some cases.

3.3.2. Ativar o filtro

You can find this filter in the image menu under FiltersBlurGaussian Blur…

3.3.3. Opções

Figura 17.12. Parâmetros de configuração do filtro Desfocagem gaussiana

Parâmetros de configuração do filtro “Desfocagem gaussiana”

Presets, Input Type, Clipping, Blending Options, Preview, Split view
[Nota] Nota

These options are described in Seção 2, “Common Features”.

Size X, Size Y

Here you can set the blur intensity. By altering the ratio of horizontal to vertical blur, you can give the effect of a motion blur.


Auto: Try to select the right filter automatically.

FIR: stands for Finite Impulse Response. For photographic or scanned images.

RLE: stands for run-length encoding. RLE Gaussian Blur is best used on computer-generated images or those with large areas of constant intensity.

Abyss policy

Abyss policy (border management) is treated with Abyss policy.

Clip to the input extent

Should the output extent be clipped to the input extent: this option removes unwanted pixels created on borders by blurring.

Figura 17.13. Example


Right-up corner of the image, zoom x800


Clip to the input extent unchecked


Clip to the input extent checked

The Gaussian Blur filter doesn't preserve edges in the image:

Left: Origin

Middle: Median

Right: Gaussian