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<?php
namespace AmaTeam\Image\Projection\Image\Utility;
class Luma
{
/**
* @param int $color
* @return float
*/
public static function compute($color)
$red = ($color >> 24) & 0xFF;
$green = ($color >> 16) & 0xFF;
$blue = ($color >> 8) & 0xFF;
return (0.2126 * $red + 0.7152 * $green + 0.0722 * $blue) / 255;
}
ama-team /
php-projection-framework
