Bob Friesenhahn wrote: > My understanding regarding video is that it uses a gamma of 1.0 and is > the linear equivalent to the electrical signal values which would be > sent to a display device. Charles Poynton's "Digital Video And HDTV" > seems to be a fantastic book on these subjects but I have not sat down > and read much of it yet.
the one thing as far as colour people go is that video is not gamma 1.0 encoded, nor is it reproduced with the original scene gamma... video gets encoded usign a variety of transfer functions with the undestanding it will be shown in a particular viewing condition. The above mentioned book goes into some detail to cover the details, but needless to say there are a whole heap of standards involved. Not all of which do the correct thing as regards accepted colour science e.g. weightings for luma/luminance. Charles' web site also goes into some of these items. Kevin -- | Kevin Wheatley, Cinesite (Europe) Ltd | Nobody thinks this | | Senior Technology | My employer for certain | | And Network Systems Architect | Not even myself | ------------------------------------------------------- This SF.Net email is sponsored by Oracle Space Sweepstakes Want to be the first software developer in space? Enter now for the Oracle Space Sweepstakes! http://ads.osdn.com/?ad_id=7412&alloc_id=16344&op=click _______________________________________________ Lcms-user mailing list Lcms-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/lcms-user
