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imagegd2> <imagefttext
Last updated: Sun, 25 Nov 2007

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imagegammacorrect

(PHP 4, PHP 5)

imagegammacorrect — Εφαρμόστε μία gamma διόρθωση σε μία GD εικόνα

Περιγραφή

int imagegammacorrect ( resource $image , float $inputgamma , float $outputgamma )

Η συνάρτηση imagegammacorrect() εφαρμόζει μία gamma διόρθωση σε ένα gd image stream (image ) δοθείσης μίας input gamma τιμής, μέσω της παραμέτρου inputgamma και μίας άλλης output gamma, μέσω της outputgamma .



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imagegammacorrect
brian dot duncan at fife dot co dot uk
26-Jan-2002 05:46
Just thought I'd add how I used the gamma correction function (seeing as no-one had done so previously).  works great.

I used a form which has a parameter $GAMMA, so I usually type in something like 1.6

$image = ImageCreateFromJpeg ( "pictures/".$PICTURE2 ) ;
if ($GAMMA != "")
{
    $GammaFloat = (double) $GAMMA ;
    imagegammacorrect ($image, 1.0, $GammaFloat ) ;
        // now save the file
    imagejpeg ( $image, "pictures/"."$PICTURE2", 90 ) ;
}

imagegd2> <imagefttext
Last updated: Sun, 25 Nov 2007
 
 
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