Apply a gamma correction to a GD image
$image
$inputgamma
$outputgamma
Applies gamma correction to the given gd image given an input and an output gamma.
image
An image resource, returned by one of the image creation functions, such as imagecreatetruecolor.
inputgamma
The input gamma.
outputgamma
The output gamma.
Returns TRUE on success or FALSE on failure.
TRUE
FALSE
Example #1 imagegammacorrect usage
<?php// Create image instance$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);?>