(PHP 4, PHP 5)
imagegammacorrect — Apply a gamma correction to a GD image
Applies gamma correction to the given gd image given an input and an output gamma.
An image resource, returned by one of the image creation functions, such as imagecreatetruecolor().
The input gamma.
The output gamma.
Returns TRUE on success or FALSE on failure.
Example #1 imagegammacorrect() usage
<?php// Create image instance$im = imagecreatefromgif('php.gif');// Correct gamma, out = 1.537imagegammacorrect($im, 1.0, 1.537);// Save and free imageimagegif($im, './php_gamma_corrected.gif');imagedestroy($im);?>
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