Imagick::posterizeImage

(PECL imagick 2.0.0)

Imagick::posterizeImage — Reduces the image to a limited number of color level

˵��

Imagick::posterizeImage ( int $levels , bool $dither ) : bool

Reduces the image to a limited number of color level.

����

levels

dither

����ֵ

�ɹ�ʱ���� TRUE��

����

Example #1 Imagick::posterizeImage()

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

posterizeImage($imagePath, \Imagick::DITHERMETHOD_RIEMERSMA, 8);

?>