Imagick::unsharpMaskImage
PHP function
Edit on GitHub ✎
(PECL imagick 2, PECL imagick 3)
Sharpens an image
Description
Imagick::unsharpMaskImage(float $radius, float $sigma, float $amount, float $threshold, int $channel = Imagick::CHANNEL_DEFAULT): bool
Sharpens an image. We convolve the image with a Gaussian operator of the given radius and standard deviation (sigma). For reasonable results, radius should be larger than sigma. Use a radius of 0 and Imagick::UnsharpMaskImage() selects a suitable radius for you.
Parameters
radiussigmaamountthresholdchannel
Return Values
Success
Errors/Exceptions
Throws
Examples
php
<?php
function unsharpMaskImage($imagePath, $radius, $sigma, $amount, $unsharpThreshold) {
$imagick = new \Imagick(realpath($imagePath));
$imagick->unsharpMaskImage($radius, $sigma, $amount, $unsharpThreshold);
header("Content-Type: image/jpg");
echo $imagick->getImageBlob();
}
?>