[Tig] Red channel missing

Bob Friesenhahn bfriesen at simple.dallas.tx.us
Tue Oct 28 18:05:31 GMT 2008


On Tue, 28 Oct 2008, wbpags wrote:
>
>    I have some footage shot on a dvcam that had a camera problem at 
> some points while shooting. Seems the red channel decided not to 
> work which of course made the image nice and green. I'm looking for 
> a fix. I'm working on a Baselight and have spent quite a bit of time

This would be a good time to explore the wonders of black/white.  Set 
the red channel to a constant value (I recommend 0.2126 of max range 
if this is sRGB or Rec.709, or 0.299 if it is Rec.601 video) and then 
convert to grayscale.  Then adjust contrast to suit.

Bob
======================================
Bob Friesenhahn
bfriesen at simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer,    http://www.GraphicsMagick.org/





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