Imagick::medianFilterImage()
(PECL imagick 2.0.0)
Applies a digital filter
说明
Imagick::medianFilterImage(float $radius): bool
Applies a digital filter that improves the quality of a noisy image. Each pixel is replaced by the median in a set of neighboring pixels as defined by radius.
参数
- $radius
The radius of the pixel neighborhood.
返回值
成功时返回TRUE
。
错误/异常
错误时抛出 ImagickException。
范例
Example #1 Imagick::medianFilterImage()
<?php function medianFilterImage($radius, $imagePath) { $imagick = new \Imagick(realpath($imagePath)); @$imagick->medianFilterImage($radius); header("Content-Type: image/jpg"); echo $imagick->getImageBlob(); } ?>