Imagick::colorMatrixImage
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Imagick::colorMatrixImage — Description
Description
public void Imagick::colorMatrixImage ( string $color_matrix = Imagick::CHANNEL_DEFAULT )Apply color transformation to an image. The method permits saturation changes, hue rotation, luminance to alpha, and various other effects. Although variable-sized transformation matrices can be used, typically one uses a 5x5 matrix for an RGBA image and a 6x6 for CMYKA (or RGBA with offsets). The matrix is similar to those used by Adobe Flash except offsets are in column 6 rather than 5 (in support of CMYKA images) and offsets are normalized (divide Flash offset by 255)
Parameters
color_matrix
Return Values
Examples
Example #1 Imagick::colorMatrixImage()
<?php
function?colorMatrixImage($imagePath,?$colorMatrix)?{
????$imagick?=?new?\Imagick(realpath($imagePath));
????$imagick->setImageOpacity(1);
????//A?color?matrix?should?look?like:
????//????$colorMatrix?=?[
????//????????1.5,?0.0,?0.0,?0.0,?0.0,?-0.157,
????//????????0.0,?1.0,?0.5,?0.0,?0.0,?-0.157,
????//????????0.0,?0.0,?1.5,?0.0,?0.0,?-0.157,
????//????????0.0,?0.0,?0.0,?1.0,?0.0,??0.0,
????//????????0.0,?0.0,?0.0,?0.0,?1.0,??0.0,
????//????????0.0,?0.0,?0.0,?0.0,?0.0,??1.0
????//????];
????$background?=?new?\Imagick();
????$background->newPseudoImage($imagick->getImageWidth(),?$imagick->getImageHeight(),??"pattern:checkerboard");
????$background->setImageFormat('png');
????$imagick->setImageFormat('png');
????$imagick->colorMatrixImage($colorMatrix);
????
????$background->compositeImage($imagick,?\Imagick::COMPOSITE_ATOP,?0,?0);
????header("Content-Type:?image/png");
????echo?$background->getImageBlob();
}
?>← Imagick::colorizeImage
Imagick::combineImages →
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