Imagick::convolveImage
(PECL imagick 2.0.0)
Imagick::convolveImage — Applies a custom convolution kernel to the image
Description
bool Imagick::convolveImage ( array $kernel [, int $channel = Imagick::CHANNEL_ALL ] )Applies a custom convolution kernel to the image.
Parameters
kernel
The convolution kernel
channel
Provide any channel constant that is valid for your channel mode. To apply to more than one channel, combine channeltype constants using bitwise operators. Refer to this list of channel constants.
Return Values
Returns TRUE on success.
Errors/Exceptions
Throws ImagickException on error.
Examples
Example #1 Imagick::convolveImage()
<?php
function?convolveImage($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();
}
?>← Imagick::contrastStretchImage
Imagick::count →
? 1997–2017 The PHP Documentation GroupLicensed under the Creative Commons Attribution License v3.0 or later.
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