Imagick::equalizeImage
Imagick::flattenImages
The Imagick class
PHP Manual

# Imagick::evaluateImage

(PECL imagick 2.0.0)

Imagick::evaluateImage — Applies an expression to an image

### Описание

bool Imagick::evaluateImage ( int `$op` , float `$constant` [, int `$channel`= Imagick::CHANNEL_ALL ] )
Внимание

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

Applys an arithmetic, relational, or logical expression to an image. Use these operators to lighten or darken an image, to increase or decrease contrast in an image, or to produce the "negative" of an image.

### Список параметров

`op`

  The operator

`constant`

  The value of the operator

`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::equalizeImage
Imagick::flattenImages
The Imagick class
PHP Manual