Imagick::setImageBias

(PECL imagick 2, PECL imagick 3)

Imagick::setImageBiasSets 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(
        -
0.7000.70,
        -
0.7000.70,
        -
0.7000.70
    
);

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

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

?>

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