# Imagick::addNoiseImage

(PECL imagick 2, PECL imagick 3)

Imagick::addNoiseImage — Adds random noise to the image

### 说明

public Imagick::addNoiseImage(int `$noise_type`, int `$channel` = Imagick::CHANNEL_DEFAULT): bool

Adds random noise to the image.

### 参数

`noise_type`

  The type of the noise. Refer to this list of noise constants.

`channel`

  Provide any channel constant that is valid for your channel mode. To apply to more than one channel, combine channel constants using bitwise operators. 缺省为`Imagick::CHANNEL_DEFAULT`. 参考此 通道常数列表

### 返回值

成功时返回 `true`。

### 示例

示例 #1 Imagick::addNoiseImage()

`<?php
function addNoiseImage($noiseType, $imagePath, $channel) {
$imagick = new \Imagick(realpath($imagePath));
$imagick->addNoiseImage($noiseType, $channel);
header("Content-Type: image/jpg");
echo $imagick->getImageBlob();
}
?>`
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