Sharpens an image. We convolve the image with a Gaussian operator
of the given radius and standard deviation (sigma). For reasonable
results, the radius should be larger than sigma. Use a radius of
0 and Imagick::sharpenImage selects a suitable radius
for you.
Parameters
radius
sigma
channel
Return Values
Returns TRUE on success.
Examples
Example #1 Imagick::sharpenImage
<?php function sharpenImage($imagePath, $radius, $sigma, $channel) { $imagick = new \Imagick(realpath($imagePath)); $imagick->sharpenimage($radius, $sigma, $channel); header("Content-Type: image/jpg"); echo $imagick->getImageBlob(); }