[opendtv] Re: "we'll forever be stuck with by going ATSC"
- From: Henry Baker <hbaker1@xxxxxxxxxxxx>
- To: opendtv@xxxxxxxxxxxxx
- Date: Wed, 12 Jan 2005 19:12:20 -0800
R,G,B are relative to standard "primaries". Negative R,G,B values come from
going outside the standard color triangle on the CIE diagram -- i.e., using
a camera that has a wider gamut than a "normal" TV camera -- e.g., a film
camera.
Ditto on the display side. >4 color displays -- e.g., Genoa -- can provide
wider
color gamuts than a "normal" TV monitor.
I assume that Poynton could cover this at HPA -- perhaps we need to twist his
arm?
At 10:04 AM 1/12/2005, John Shutt wrote:
>I see how you can manipulate the numeric values of component to create a
>negative value of RGB, but how does a camera produce a negative value of
>RGB? (Does light shoot out of the CCD?) How does a CRT, LCD, or Plasma set
>display a negative value of RGB (does the room get darker?)
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