Imagick::setImageBias
Imagick::setImageBias
(PECL imagick 2.0.0)
Imagick::setImageBias — Sets the image bias for any method that convolves an image
Description
bool Imagick::setImageBias ( float $bias )
Sets the image bias for any method that convolves an image (e.g. Imagick::ConvolveImage()).
Parameters
-
bias
Return Values
Returns TRUE
on success.
Errors/Exceptions
Throws ImagickException on error.
Examples
Example #1 Imagick::setImageBias()
<?php //requires ImageMagick version 6.9.0-1 to have an effect on convolveImage function setImageBias($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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