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

# Imagick::gammaImage

(PECL imagick 2.0.0)

Imagick::gammaImage — Gamma-corrects an image

### Описание

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

К настоящему времени эта функция еще не была документирована; для ознакомления доступен только список аргументов.

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.

### Список параметров

`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.

### Возвращаемые значения

Returns `TRUE` on success.

### Errors/Exceptions

Throws ImagickException on error.

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