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();
}

?>