Imagick::convolveImage

    (PECL imagick 2, PECL imagick 3)

    Imagick::convolveImage — Applies a custom convolution kernel to the image

    Descrição

    publicImagick::convolveImage(array$kernel, int$channel = Imagick::CHANNEL_DEFAULT): bool

    Applies a custom convolution kernel to the image.

    Parâmetros

    kernel

    The convolution kernel

    channel

    Provide any channel constant that is valid for your channel mode. To apply to more than one channel, combine channeltype constants using bitwise operators. Refer to this list of channel constants.

    Valor Retornado

    Retorna true em caso de sucesso.

    Erros/Exceções

    Lança uma exceção ImagickException em caso de erro.

    Exemplos

    Exemplo #1 Imagick::convolveImage()

    <?php
    function convolveImage($imagePath, $bias, $kernelMatrix) {
    $imagick = new \Imagick(realpath($imagePath));
    //$edgeFindingKernel = [-1, -1, -1, -1, 8, -1, -1, -1, -1,];
    $imagick->setImageBias($bias * \Imagick::getQuantum());
    $imagick->convolveImage($kernelMatrix);
    header("Content-Type: image/jpg");
    echo     $imagick->getImageBlob();
    }

    ?>
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