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    Imagick::setImageBias

    (PECL imagick 2, PECL imagick 3)

    Imagick::setImageBias — Sets the image bias for any method that convolves an image

    Avviso

    This function has been DEPRECATED as of Imagick 3.4.4. Relying on this function is highly discouraged.

    Descrizione

    public Imagick::setImageBias(float $bias): bool

    Sets the image bias for any method that convolves an image (e.g. Imagick::ConvolveImage()).

    Elenco dei parametri

    bias

    Valori restituiti

    Restituisce true in caso di successo.

    Errori/Eccezioni

    Lancia una ImagickException in caso di errore.

    Esempi

    Example #1 Imagick::setImageBias()

    <?php
    //requires ImageMagick version 6.9.0-1 to have an effect on convolveImage
    function setImageBias($bias) {
    $imagick = new \Imagick(realpath("images/stack.jpg"));

    $xKernel = array(
    -    0.70, 0, 0.70,
    -    0.70, 0, 0.70,
    -    0.70, 0, 0.70
    );

    $imagick->setImageBias($bias * \Imagick::getQuantum());
    $imagick->convolveImage($xKernel, \Imagick::CHANNEL_ALL);

    $imagick->setImageFormat('png');

    header('Content-type: image/png');
    echo     $imagick->getImageBlob();
    }

    ?>

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