Re: gray point correction

Posted by michael shaffer on Jan 11, 2006; 10:26pm
URL: http://imagej.273.s1.nabble.com/Serial-communication-tp3704088p3704090.html

 Martin writes ...


> Is there a color correction tool for ImageJ?  If not, can
> someone point me to a source that discusses how to achieve
> this (a la Photoshop or Gimp).  All I have been able to find
> so far are tutorials on how to use Gimp gray point correction
> or papers on color constancy.  I'm looking for something in
> between, hopefully.

You can use the "gray" eyedropper with PS.  It's in the levels and curves
dialog boxes.  Its use should be described in the PS PDF manual.

HTH ...