The Imagick class
PHP Manual

Imagick::getImageChannelExtrema

(PECL imagick 2.0.0)

Imagick::getImageChannelExtremaGets the extrema for one or more image channels

Описание

array Imagick::getImageChannelExtrema ( int $channel )
Предупреждение

Към момента тази функция не е документирана; наличен е единствено списъкът с аргументите й.

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

Параметри

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.

Връщани стойности

Връща TRUE при успех.

Грешки/Изключения

Хвърля ImagickException при грешка.


The Imagick class
PHP Manual