Imagick::getImageChannelDepth
Imagick::getImageChannelDistortions
The Imagick class
PHP Manual

# Imagick::getImageChannelDistortion

(PECL imagick 2.0.0)

Imagick::getImageChannelDistortion — Compares image channels of an image to a reconstructed image

### Descrição

float Imagick::getImageChannelDistortion ( Imagick `$reference` , int `$channel` , int `$metric` )
Aviso

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

Compares one or more image channels of an image to a reconstructed image and returns the specified distortion metric.

### Parâmetros

`reference`

  Imagick object to compare to.

`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. Refer to this list of channel constants.

`metric`

  One of the metric type constants.

### Valor Retornado

Retorna `TRUE` em sucesso.

### Erros

Dispara ImagickException em erro.

Imagick::getImageChannelDepth
Imagick::getImageChannelDistortions
The Imagick class
PHP Manual