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();
    }

    ?>

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