(PECL imagick 2.0.0)
Applies a custom convolution kernel to the image
bool Imagick::convolveImage ( array $kernel [, int $channel = Imagick::CHANNEL_ALL ] )
Applies a custom convolution kernel to the image.
Parameters:
kernel
The convolution kernel
channel
Provide any channel constant that is valid for your channel mode. To apply to more than one channel, combine channeltype constants using bitwise operators. Refer to this list of channel constants.
Returns:
Returns TRUE on success.
Exception:
Throws ImagickException on error.
Examples:
Imagick::convolveImage()
<?php
function convolveImage($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();
}
?>
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