imagegammacorrect
(PHP 4, PHP 5)
imagegammacorrect — Apply a gamma correction to a GD image
說明
bool imagegammacorrect
( resource $image
, float $inputgamma
, float $outputgamma
)
Applies gamma correction to the given gd image given an input and an output gamma.
參數
- image
-
An image resource, returned by one of the image creation functions, such as imagecreatetruecolor().
- inputgamma
-
The input gamma
- outputgamma
-
The output gamma
Return值
如果成功則回傳 TRUE，失敗則回傳 FALSE。