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