Imagick::getImageChannelDistortion
Imagick::getImageChannelMean
The Imagick class
PHP Manual

# Imagick::getImageChannelExtrema

(PECL imagick 2.0.0)

Imagick::getImageChannelExtrema — Gets the extrema for one or more image channels

### Descrição

array Imagick::getImageChannelExtrema ( int `$channel` )
Aviso

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

Gets the extrema for one or more image channels. Return value is an associative array with the keys "minima" and "maxima".

### Parâmetros

`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.

### Valor Retornado

Retorna `TRUE` em sucesso.

### Erros

Dispara ImagickException em erro.

Imagick::getImageChannelDistortion
Imagick::getImageChannelMean
The Imagick class
PHP Manual