Imagick::selectiveBlurImage()

(No version information available, might only be in Git)

Description

说明

publicImagick::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.

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();
}
?>