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Imagick::setImageBias

(PECL imagick 2, PECL imagick 3)

Imagick::setImageBiasSets the image bias for any method that convolves an image

Aviso

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

Descrição

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

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

Parâmetros

bias

Valor Retornado

Retorna true no sucesso.

Erros

Lança ImagickException em caso de erro.

Exemplos

Exemplo #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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