Imagick::adaptiveBlurImage

(PECL imagick 2, PECL imagick 3)

Imagick::adaptiveBlurImage — Adds adaptive blur filter to image

说明

public 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。

示例

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;

?>

以上示例的输出类似于：

Output of example : Using Imagick::adaptiveBlurImage()

参见

Imagick::blurImage() - Adds blur filter to image
Imagick::motionBlurImage() - Simulates motion blur
Imagick::radialBlurImage() - Radial blurs an image

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User Contributed Notes 1 note

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michael at dodwell dot us ¶

9 years ago

Be aware that this function is extremely CPU intensive.

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