Imagick::addNoiseImage()
(PECL imagick 2.0.0)
Adds random noise to the image
说明
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.
- $channel
Provide any channel constant that is valid for your channel mode. To apply to more than one channel, combine channel constants using bitwise operators.缺省为
Imagick::CHANNEL_DEFAULT
.参考此通道常数列表
返回值
成功时返回TRUE
。
范例
Example #1 Imagick::addNoiseImage()
<?php function addNoiseImage($noiseType, $imagePath, $channel) { $imagick = new \Imagick(realpath($imagePath)); $imagick->addNoiseImage($noiseType, $channel); header("Content-Type: image/jpg"); echo $imagick->getImageBlob(); } ?>