= 3.3.0)Imagick::selectiveBlurImage — Description說(shuō)明public Imagick::selectiveBlurImage( float $radius, ">

Imagick::selectiveBlurImage

(PECL imagick 3 >= 3.3.0)

Imagick::selectiveBlurImage — Description

說(shuō)明

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

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

參數(shù)

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(shù)列表

返回值

成功時(shí)返回 true。

范例

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();
}

?>