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Dieses Dokument verwendet PHP-Handbuch für chinesische Websites Freigeben
(PECL imagick 2.0.0)
Imagick::uniqueImageColors — Discards all but one of any pixel color
Discards all but one of any pixel color. 此方法在Imagick基于ImageMagick 6.2.9以上版本编译时可用。
成功时返回 TRUE
。
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 ();
}
?>