Imagick::uniqueImageColors
(PECL imagick 2,PECL imagick 3)
Imagick::uniqueImageColors — Discards all but one of any pixel color
Description
public Imagick::uniqueImageColors(): bool
Discards all but one of any pixel color. This method is available if Imagick has been compiled against ImageMagick version 6.2.9 or newer.
Parameters
This function has no parameters.
Return Values
Returns true on success.
Examples
Example #1 Imagick::uniqueImageColors()
<?php
function uniqueImageColors($imagePath) {
$imagick = new \Imagick(realpath($imagePath));
//Reduce the image to 256 colours nicely.
$imagick->quantizeImage(256, \Imagick::COLORSPACE_YIQ, 0, false, false);
$imagick->uniqueImageColors();
$imagick->scaleimage($imagick->getImageWidth(), $imagick->getImageHeight() * 20);
header("Content-Type: image/png");
echo $imagick->getImageBlob();
}
?>
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