(PECL imagick 3 >= 3.3.0)
Imagick::selectiveBlurImage — Description
$radius,$sigma,$threshold,$channel = Imagick::CHANNEL_DEFAULTSelectively blur an image within a contrast threshold. It is similar to the unsharpen mask that sharpens everything with contrast above a certain threshold.
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. 缺省為Imagick::CHANNEL_DEFAULT.
參考此 通道常數列表
成功時(shí)返回 true。
示例 #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();
}
?>