[opendtv] Re: New Chips Improve Color TV Dramatically

With a perceptually constant scale.

TTFN,
Mark


John Willkie wrote:

>What is a good way to prove that they're close, Mark?
>
>John Willkie
>
>-----Original Message-----
>From: opendtv-bounce@xxxxxxxxxxxxx
>[mailto:opendtv-bounce@xxxxxxxxxxxxx]On Behalf Of Mark Schubin
>Sent: Tuesday, June 29, 2004 2:37 PM
>To: opendtv@xxxxxxxxxxxxx
>Subject: [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.
>>    
>>
>
>
> 
> 
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