Imagick::adaptiveBlurImage
(PECL imagick 2, PECL imagick 3)
Imagick::adaptiveBlurImage — Adds adaptive blur filter to image
說(shuō)明
$radius, float $sigma, int $channel = Imagick::CHANNEL_DEFAULT): boolAdds 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以上版本編譯時(shí)可用。
參數
-
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. 缺省為
Imagick::CHANNEL_DEFAULT. 參考此 通道常數列表
返回值
成功時(shí)返回 true。
錯誤／異常
錯誤時(shí)拋出 ImagickException。
范例
示例 #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;
?>
以上例程的輸出類(lèi)似于：
參見(jiàn)
- Imagick::blurImage() - Adds blur filter to image
- Imagick::motionBlurImage() - Simulates motion blur
- Imagick::radialBlurImage() - Radial blurs an image