Imagick::posterizeImage
(PECL imagick 2, PECL imagick 3)
Imagick::posterizeImage — Reduces the image to a limited number of color level
Description
public Imagick::posterizeImage ( int $levels , bool $dither ) : bool
Reduces the image to a limited number of color level.
Parameters
-
levels -
dither
Return Values
Returns true on success.
Examples
Example #1 Imagick::posterizeImage()
<?php
function posterizeImage($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);
?>
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https://www.php.net/manual/en/imagick.posterizeimage.php