Imagick::medianFilterImage
(PECL imagick 2, PECL imagick 3)
Imagick::medianFilterImage — Applies a digital filter
警告
此函数在 Imagick 3.4.4 中被 废弃,强烈建议不要应用此函数。
说明
public Imagick::medianFilterImage
( float
$radius
) : boolApplies a digital filter that improves the quality of a noisy image. Each pixel is replaced by the median in a set of neighboring pixels as defined by radius.
参数
-
radius
-
The radius of the pixel neighborhood.
返回值
成功时返回 true
。
错误/异常
错误时抛出 ImagickException。
范例
示例 #1 Imagick::medianFilterImage()
<?php
function medianFilterImage($radius, $imagePath) {
$imagick = new \Imagick(realpath($imagePath));
@$imagick->medianFilterImage($radius);
header("Content-Type: image/jpg");
echo $imagick->getImageBlob();
}
?>