Imagick::setImageBias
(PECL imagick 2, PECL imagick 3)
Imagick::setImageBias — Sets 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
$bias
) : boolSets the image bias for any method that convolves an image (e.g. Imagick::ConvolveImage()).
Parâmetros
-
bias -
Valor Retornado
Retorna true no sucesso.
Erros
Lança ImagickException em caso de erro.
Exemplos
Exemplo #1 Imagick::setImageBias()
<?php
//requires ImageMagick version 6.9.0-1 to have an effect on convolveImage
function setImageBias($bias) {
$imagick = new \Imagick(realpath("images/stack.jpg"));
$xKernel = array(
-0.70, 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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