   #PHP Manual Image functions imagefttext imagegd2

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                               imagegammacorrect

   (PHP 3>= 3.0.13, PHP 4 )
   imagegammacorrect -- Apply a gamma correction to a GD image

Description

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

   The imagegammacorrect() function applies gamma correction to a gd
   image stream (image) given an input gamma, the parameter inputgamma
   and an output gamma, the parameter outputgamma.
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