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();
}

?>