[opendtv] Re: New Chips Improve Color TV Dramatically

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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