Php/docs/imagick.uniqueimagecolors
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.
Return Values
Returns TRUE
on success.
Examples
Example #1 Imagick::uniqueImageColors()
<?phpfunction 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();}?>