Imagick::compareImageChannels
Imagick::compareImages
The Imagick class
PHP Manual

# Imagick::compareImageLayers

(PECL imagick 2.0.0)

Imagick::compareImageLayers — Returns the maximum bounding region between images

### Descrição

Imagick Imagick::compareImageLayers ( int `$method` )

Compares each image with the next in a sequence and returns the maximum bounding region of any pixel differences it discovers. Este método esta disponível apenas se Imagick foi compilado com ImageMagick versão 6.2.9 ou mais nova.

### Parâmetros

`method`

  One of the layer method constants.

### Valor Retornado

Retorna `TRUE` em sucesso.

### Erros

Dispara ImagickException em erro.

### Exemplos

Exemplo #1 Using Imagick::compareImageLayers()

Comparing image layers

`<?php
/* create new imagick object */
$im = new Imagick("test.gif");
/* optimize the image layers */
$result = $im->compareImageLayers(imagick::LAYERMETHOD_COALESCE);
/* work on the $result */
?>`

### Veja Também

- Imagick::optimizeImageLayers() - Removes repeated portions of images to optimize
- Imagick::writeImages() - Writes an image or image sequence
- Imagick::writeImage() - Writes an image to the specified filename

Imagick::compareImageChannels
Imagick::compareImages
The Imagick class
PHP Manual