Imagick::selectiveBlurImage
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Imagick::selectiveBlurImage — Description
说明
public Imagick::selectiveBlurImage
( float
$radius
, float $sigma
, float $threshold
[, int $channel = Imagick::CHANNEL_DEFAULT
] ) : boolSelectively blur an image within a contrast threshold. It is similar to the unsharpen mask that sharpens everything with contrast above a certain threshold.
参数
-
radius -
-
sigma -
-
threshold -
-
channel -
Provide any channel constant that is valid for your channel mode. To apply to more than one channel, combine channel constants using bitwise operators. 缺省为
Imagick::CHANNEL_DEFAULT. 参考此 通道常数列表
返回值
成功时返回 TRUE。
范例
Example #1 Imagick::selectiveBlurImage()
<?php
function selectiveBlurImage($imagePath, $radius, $sigma, $threshold, $channel) {
$imagick = new \Imagick(realpath($imagePath));
$imagick->selectiveBlurImage($radius, $sigma, $threshold, $channel);
header("Content-Type: image/jpg");
echo $imagick->getImageBlob();
}
?>