The Imagick::uniqueImageColors() function is an inbuilt function in PHP which is used to discards all but one of any pixel color. This function is available in version 6.2.9 or newer.
Syntax:
bool Imagick::uniqueImageColors( void )
Parameters: This function does not accepts any parameters.
Return Value: This function returns True on success.
Below program illustrates the Imagick::uniqueImageColors() function in PHP:
Program:
<?php // Create an Imagick object $imagick = new Imagick(
// Reduce the image to 256 colours nicely. $imagick ->quantizeImage(256, \Imagick::COLORSPACE_YIQ, 0, false, false);
// Use uniqueImageColors function to distinguish the color of image $imagick ->uniqueImageColors();
// Scale the output image $imagick ->scaleimage( $imagick ->getImageWidth() * 10,
$imagick ->getImageHeight() * 50);
header( "Content-Type: image/png" );
// Display the output image echo $imagick ->getImageBlob();
?> |
Output:
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Reference: http://php.net/manual/en/imagick.uniqueimagecolors.php