[opendtv] Re: New Chips Improve Color TV Dramatically
- From: Mark Schubin <tvmark@xxxxxxxxxxxxx>
- To: opendtv@xxxxxxxxxxxxx
- Date: Tue, 29 Jun 2004 17:36:51 -0400
I'm not sure there's much more value in pursuing this, but I'll take one
final crack. If, on a scale of tens of millions of years, I plot the
rise and demise of dinosaurs, that's pretty common. If, on the same
scale, I plot the birth of every person on this list, they will all
occupy a point at essentially the same coordinate. But we were not all
born at the same time.
Similarly, the CIE x,y coordinates are useful for many purposes but are
not ideal for identifying perceptually different color primaries. Once
again, I agree that the primaries being discussed ARE perceptually very
close (I was involved in some of the standardization). I simply point
out that the x,y coordinates are not a way to prove that they are close,
any more than a geological time scale is good for differentiating my
birth date from yours.
TTFN,
Mark
Alan Roberts wrote:
>Sorry, Mark, but elementary colour science does just that, as I explained.
>In any chromaticity space, those primaries are near identical sets. The
>table of numbers is only that, a table of numbers, but they represent
>colours which when plotted in any sensible chromaticity diagram or colour
>difference diagram, will show that they are darn near identical. Semantics
>can't get you away from that obvious conclusion.
>
>----- Original Message -----
>From: "Mark Schubin" <tvmark@xxxxxxxxxxxxx>
>To: <opendtv@xxxxxxxxxxxxx>
>Sent: Tuesday, June 29, 2004 1:59 PM
>Subject: [opendtv] Re: New Chips Improve Color TV Dramatically
>
>
>
>>1 - Granted, the primaries are perceptually similar, but
>>2 - You cannot prove that from your numbers.
>>
>>TTFN,
>>Mark
>>
>>
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