Imagick::selectiveBlurImage

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Imagick::selectiveBlurImageDescription

说明

public bool Imagick::selectiveBlurImage ( float $radius , float $sigma , float $threshold [, int $channel = Imagick::CHANNEL_DEFAULT ] )

Selectively blur an image within a contrast threshold. It is similar to the unsharpen mask that sharpens everything with contrast above a certain threshold.

参数

radius

sigma

threshold

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::selectiveBlurImage()

<?php
function selectiveBlurImage($imagePath$radius$sigma$threshold$channel) {
    
$imagick = new \Imagick(realpath($imagePath));
    
$imagick->selectiveBlurImage($radius$sigma$threshold$channel);
    
header("Content-Type: image/jpg");
    echo 
$imagick->getImageBlob();
}

?>

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