Imagick::unsharpMaskImage
Imagick::unsharpMaskImage
(PECL imagick 2.0.0)
Imagick::unsharpMaskImage — Sharpens an image
Description
bool Imagick::unsharpMaskImage ( float $radius , float $sigma , float $amount , float $threshold [, int $channel = Imagick::CHANNEL_ALL ] )
Sharpens an image. We convolve the image with a Gaussian operator of the given radius and standard deviation (sigma). For reasonable results, radius should be larger than sigma. Use a radius of 0 and Imagick::UnsharpMaskImage() selects a suitable radius for you.
Parameters
radius sigma amount threshold channel
Return Values
Returns TRUE on success.
Errors/Exceptions
Throws ImagickException on error.
Examples
Example #1 Imagick::unsharpMaskImage()
<?php
function unsharpMaskImage($imagePath, $radius, $sigma, $amount, $unsharpThreshold) {
$imagick = new \Imagick(realpath($imagePath)
$imagick->unsharpMaskImage($radius, $sigma, $amount, $unsharpThreshold
header("Content-Type: image/jpg"
echo $imagick->getImageBlob(
}
?>
← Imagick::uniqueImageColors
Imagick::valid →
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https://secure.php.net/manual/en/imagick.unsharpmaskimage.php
