Imagick::reduceNoiseImage()
(PECL imagick 2.0.0)
Smooths the contours of an image
说明
Imagick::reduceNoiseImage(float $radius): bool
Smooths 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.
参数
- $radius
返回值
成功时返回TRUE
。
错误/异常
错误时抛出 ImagickException。
范例
Example #1 Imagick::reduceNoiseImage()
<?php function reduceNoiseImage($imagePath, $reduceNoise) { $imagick = new \Imagick(realpath($imagePath)); @$imagick->reduceNoiseImage($reduceNoise); header("Content-Type: image/jpg"); echo $imagick->getImageBlob(); } ?>