imagegammacorrect
(PHP 4, PHP 5, PHP 7)
imagegammacorrect — Apply a gamma correction to a GD image
Descrição
bool imagegammacorrect
( resource
$image
, float $inputgamma
, float $outputgamma
)
Applies gamma correction to the given gd image
given an input and an output gamma.
Parâmetros
-
image -
An image resource, returned by one of the image creation functions, such as imagecreatetruecolor().
-
inputgamma -
The input gamma.
-
outputgamma -
The output gamma.
Valor Retornado
Retorna TRUE em caso de sucesso ou FALSE em caso de falha.
Exemplos
Example #1 imagegammacorrect() usage
<?php
// Create image instance
$im = imagecreatefromgif('php.gif');
// Correct gamma, out = 1.537
imagegammacorrect($im, 1.0, 1.537);
// Save and free image
imagegif($im, './php_gamma_corrected.gif');
imagedestroy($im);
?>