Applies a digital filter

# 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 function 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。

### 示例

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();
    }

    ?>

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