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(PECL imagick 2.0.0)

Imagick::adaptiveSharpenImageAdaptively sharpen the image


bool Imagick::adaptiveSharpenImage ( float $radius , float $sigma [, int $channel = Imagick::CHANNEL_DEFAULT ] )

Adaptively sharpen the image by sharpening more intensely near image edges and less intensely far from edges. Questo metodo è disponibile se Imagick è stato compilato con ImageMagick versione 6.2.9 o successive.

Elenco dei parametri


The radius of the Gaussian, in pixels, not counting the center pixel. Use 0 for auto-select.


The standard deviation of the Gaussian, in pixels.


Provide any channel constant that is valid for your channel mode. To apply to more than one channel, combine channel constants using bitwise operators. Per default è Imagick::CHANNEL_DEFAULT. Fare riferimento a questa lista di costanti di canale

Valori restituiti

Restituisce TRUE in caso di successo.


Example #1 A Imagick::adaptiveSharpenImage() example

Adaptively sharpen the image with radius 2 and sigma 1.

try {
$image = new Imagick('image.png');
} catch(
ImagickException $e) {
'Error: ' $e->getMessage();
header('Content-type: image/png');

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