Imagick::selectiveBlurImage

(PECL imagick 3 >= 3.3.0)

Imagick::selectiveBlurImage — Selectively blur an image within a contrast threshold

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。

示例

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();
}

?>