Imagick::orderedPosterizeImage

(PECL imagick 2.2.2)

Imagick::orderedPosterizeImage — Performs an ordered dither

说锟斤拷

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

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. 锟剿凤拷锟斤拷锟斤拷Imagick锟斤拷锟斤拷ImageMagick 6.3.1锟斤拷锟较版本锟斤拷锟斤拷时锟斤拷锟矫★拷

锟斤拷锟斤拷

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. Refer to this list of channel constants.

锟斤拷锟斤拷值

锟缴癸拷时锟斤拷锟斤拷 TRUE锟斤拷

锟斤拷锟斤拷锟届常

锟斤拷锟斤拷时锟阶筹拷 ImagickException锟斤拷

锟斤拷锟斤拷

Example #1 Imagick::orderedPosterizeImage()


<?php
function orderedPosterizeImage($imagePath, $orderedPosterizeType) {
    $imagick = new \Imagick(realpath($imagePath));
    
  
    $imagick->orderedPosterizeImage($orderedPosterizeType);
    $imagick->setImageFormat('png');
    
    header("Content-Type: image/png");
    echo $imagick->getImageBlob();
}

//orderedPosterizeImage($imagePath, 'o4x4,3,3');
//orderedPosterizeImage($imagePath, 'o8x8,6,6');
orderedPosterizeImage($imagePath, 'h8x8a');





?>