[Physltest] [Phys-L] Re: LED mini-flashlight price break

[Brian Whatcott <betwys1@SBCGLOBAL.NET>]

Here's a slide show that reviews some interesting ratios and quantifiers...

  <http://www.cs.ucf.edu/graphics/HDR_SNP_PresentationFinal.ppt>


Brian W

At 07:06 PM 1/27/2005, you wrote:
> Actually, tho poorly, one may stimulate the cones by pulsing w/ white
> lite.   This is a DOJ vu.
>
> Using monochromatic lite would require two colors, because the response
> of all three don't overlap.
>
> bc
>
> John Clement wrote:
>
> > Actually if you look at the current set of primaries used in TV, they cover
> > only a portion of the chromaticity diagram.  An alternate set might give
> > just as good reproduction.  Indeed Edwin Land demonstrated that only 2
> > colors can be used for very good, but not necessarily excellent
> > reproduction.  It is probably easier to get good reproduction with RGB.
> >
> > The subject of actual color vision is very different from the engineering
> > model which uses the chromaticity diagram.  This is because the eye-brain
> > renormalizes the perception across color boundaries to make color vision
> cut


Brian Whatcott    Altus OK    Eureka!
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