Php/docs/imagick.convolveimage
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Imagick::convolveImage
(PECL imagick 2, PECL imagick 3)
Imagick::convolveImage — Applies a custom convolution kernel to the image
Description
public Imagick::convolveImage
( array $kernel
[, int $channel = Imagick::CHANNEL_DEFAULT
] ) : bool
Applies a custom convolution kernel to the image.
Parameters
kernel- The convolution kernel
channel- Provide any channel constant that is valid for your channel mode. To apply to more than one channel, combine channeltype constants using bitwise operators. Refer to this list of channel constants.
Return Values
Returns TRUE on success.
Errors/Exceptions
Throws ImagickException on error.
Examples
Example #1 Imagick::convolveImage()
<?phpfunction convolveImage($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();}?>
