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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