Imagick::fxImage
Imagick::gaussianBlurImage
The Imagick class
PHP Manual

# Imagick::gammaImage

(PECL imagick 2.0.0)

Imagick::gammaImage — Gamma-corrects an image

### Descrição

bool Imagick::gammaImage ( float `$gamma` [, int `$channel`= Imagick::CHANNEL_ALL ] )
Aviso

Esta função não está documentada; somente a lista de argumentos está disponível.

Gamma-corrects an image. The same image viewed on different devices will have perceptual differences in the way the image's intensities are represented on the screen. Specify individual gamma levels for the red, green, and blue channels, or adjust all three with the gamma parameter. Values typically range from 0.8 to 2.3.

### Parâmetros

`gamma`

  The amount of gamma-correction.

`channel`

  Provide any channel constant that is valid for your channel mode. To apply to more than one channel, combine channeltype constants using bitwise operators. Defaults to `Imagick::CHANNEL_ALL`. Refer to this list of channel constants.

### Valor Retornado

Retorna `TRUE` em sucesso.

### Erros

Dispara ImagickException em erro.

Imagick::fxImage
Imagick::gaussianBlurImage
The Imagick class
PHP Manual