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 ] ) : 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();
}

?>