The Imagick class
PHP Manual

Imagick::orderedPosterizeImage

(PECL imagick 2.2.2)

Imagick::orderedPosterizeImagePerforms an ordered dither

Описание

bool Imagick::orderedPosterizeImage ( string $threshold_map [, int $channel= Imagick::CHANNEL_ALL ] )
Предупреждение

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

Performs an ordered dither based on a number of pre-defined dithering threshold maps, but over multiple intensity levels, which can be different for different channels, according to the input arguments.

Параметри

threshold_map

A string containing the name of the threshold dither map to use

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