The Imagick class
PHP Manual

Imagick::adaptiveSharpenImage

(PECL imagick 2.0.0)

Imagick::adaptiveSharpenImageAdaptively sharpen the image

Описание

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. Този метод съществува ако Imagick е била компилирана за версия 6.2.9 на ImageMagick или по-нова.

Параметри

radius

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

sigma

The standard deviation of the Gaussian, in pixels.

channel

Provide any channel constant that is valid for your channel mode. To apply to more than one channel, combine channel constants using bitwise operators. Defaults to Imagick::CHANNEL_DEFAULT. Refer to this list of channel constants

Връщани стойности

Връща TRUE при успех.

Примери

Example #1 A Imagick::adaptiveSharpenImage() example

Adaptively sharpen the image with radius 2 and sigma 1.

<?php
try {
    
$image = new Imagick('image.png');
    
$image->adaptiveSharpenImage(2,1);
} catch(
ImagickException $e) {
    echo 
'Error: ' $e->getMessage();
    die();
}
header('Content-type: image/png');
echo 
$image;
?>

Вж. също


The Imagick class
PHP Manual