Imagick::sharpenImage
(PECL imagick 2, PECL imagick 3)
Imagick::sharpenImage — Sharpens an image
Description
$radius
, float $sigma
, int $channel
= Imagick::CHANNEL_DEFAULT): boolSharpens an image. We convolve the image with a Gaussian operator of the given radius and standard deviation (sigma). For reasonable results, the radius should be larger than sigma. Use a radius of 0 and Imagick::sharpenImage() selects a suitable radius for you.
Parameters
-
radius
-
-
sigma
-
-
channel
-
Return Values
Returns true
on success.
Examples
Example #1 Imagick::sharpenImage()
<?php
function sharpenImage($imagePath, $radius, $sigma, $channel) {
$imagick = new \Imagick(realpath($imagePath));
$imagick->sharpenimage($radius, $sigma, $channel);
header("Content-Type: image/jpg");
echo $imagick->getImageBlob();
}
?>