Imagick::convolveImage
PHP function
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(PECL imagick 2, PECL imagick 3)
Applies a custom convolution kernel to the image
Description
Imagick::convolveImage(array $kernel, int $channel = Imagick::CHANNEL_DEFAULT): bool
Applies a custom convolution kernel to the image.
Parameters
kernelThe convolution kernel
channelProvide any channel constant that is valid for your channel mode. To apply to more than one channel, combine channeltype constants using bitwise operators. Refer to this list of channel constants.
Return Values
Success
Errors/Exceptions
Throws
Examples
php
<?php
function convolveImage($imagePath, $bias, $kernelMatrix) {
$imagick = new \Imagick(realpath($imagePath));
//$edgeFindingKernel = [-1, -1, -1, -1, 8, -1, -1, -1, -1,];
$imagick->setImageBias($bias * \Imagick::getQuantum());
$imagick->convolveImage($kernelMatrix);
header("Content-Type: image/jpg");
echo $imagick->getImageBlob();
}
?>