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PHP Manual :: Imagick::unsharpMaskImage



Imagick::uniqueImageColors || Imagick::valid || Imagick || PHP Manual

(PECL imagick 2.0.0)

Imagick::unsharpMaskImageSharpens 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 || Imagick || PHP Manual
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