Imagick::commentImage
Imagick::compareImageLayers
The Imagick class
PHP Manual

# Imagick::compareImageChannels

(PECL imagick 2.0.0)

Imagick::compareImageChannels — Returns the difference in one or more images

### Descripción

array Imagick::compareImageChannels ( Imagick `$image` , int `$channelType` , int `$metricType` )
Warning

Esta función no está documentada actualmente, solamente se encuentra disponible la lista de parámetros.

Compares one or more images and returns the difference image.

### Lista de parámetros

`image`

  Imagick object containing the image to compare.

`channelType`

  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.

`metricType`

  One of the metric type constants.

### Valores retornados

Array consisting of new_wand and distortion.

### Errors/Exceptions

Throws ImagickException on error.

Imagick::commentImage
Imagick::compareImageLayers
The Imagick class
PHP Manual