Imagick::colorMatrixImage
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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Licensed under the Creative Commons Attribution License v3.0 or later.
https://secure.php.net/manual/en/imagick.colormatriximage.php
