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(PECL imagick 2.0.0)
Imagick::adaptiveBlurImage — Adds adaptive blur filter to image
$radius
, float $sigma
[, int $channel
= Imagick::CHANNEL_DEFAULT
] )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。
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
成功时返回 TRUE
。
错误时抛出 ImagickException。
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:
[#1] michael at dodwell dot us [2014-08-28 00:59:28]
Be aware that this function is extremely CPU intensive.