(PECL imagick 2.0.0)
Imagick::reduceNoiseImage — Smooths the contours of an image
$radius
) : boolSmooths the contours of an image while still preserving edge information. The algorithm works by replacing each pixel with its neighbor closest in value. A neighbor is defined by radius. Use a radius of 0 and Imagick::reduceNoiseImage() selects a suitable radius for you.
radius
成功时返回 TRUE。
错误时抛出 ImagickException。
Example #1 Imagick::reduceNoiseImage()
<?php
function reduceNoiseImage($imagePath, $reduceNoise) {
$imagick = new \Imagick(realpath($imagePath));
@$imagick->reduceNoiseImage($reduceNoise);
header("Content-Type: image/jpg");
echo $imagick->getImageBlob();
}
?>