Imagick::medianFilterImage
(PECL imagick 2.0.0)
Imagick::medianFilterImage — 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();
}
?>