Imagick::adaptiveBlurImage()
(PECL imagick 2.0.0)
Adds adaptive blur filter to image
说明
Imagick::adaptiveBlurImage(float $radius,float $sigma[,int $channel= Imagick::CHANNEL_DEFAULT]): bool
Adds an adaptive blur filter to image. The intensity of an adaptive blur depends is dramatically decreased at edge of the image, whereas a standard blur is uniform across the image.此方法在Imagick基于ImageMagick 6.2.9以上版本编译时可用。
参数
- $radius
The radius of the Gaussian, in pixels, not counting the center pixel. Provide a value of 0 and the radius will be chosen automagically.
- $sigma
The standard deviation of the Gaussian, in pixels.
- $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。
错误／异常
错误时抛出 ImagickException。
范例
Example #1 Using Imagick::adaptiveBlurImage():
Adaptively blur an image, then display to the browser.
<?php
header('Content-type: image/jpeg');
$image = new Imagick('test.jpg');
$image->adaptiveBlurImage(5,3);
echo $image;
?>
以上例程的输出类似于：
参见
- Imagick::blurImage() Adds blur filter to image
- Imagick::motionBlurImage() Simulates motion blur
- Imagick::radialBlurImage() Radial blurs an image
Be aware that this function is extremely CPU intensive.