Re: Color

[brian whatcott <inet@INTELLISYS.NET>]

At 16:52 11/1/00 -0600, you wrote:
> Jim Green wrote in part:
>
> > BTW red/green color blind people perceive both colors the way
> > most do grey
> > -- although I don't know how anyone could tell.
> How about a modified Turing test.   You ask questions about perception of
> color to the two folks, in lots of different guises and circumstances. And
> if they always answer in isomorphic fashion, you might conclude that they
> are perceiving the colors the same way.

> Joel Rauber
> Joel_Rauber@sdstate.edu
Putting a little flesh on this - there is a job requirement in
some occupations that one distinguish color.
 For example, one can claim with some confidance that
 Hugh H and John D have normal color vision.

 The color charts used to elicit this information are both simple
and elegant - mildly colored dots cover a field. Folks with normal
 vision see a numeral which they are to call out - they discriminate
 on the basis of color, because the brightness of each dot is
controlled in a narrow band. These charts can be arranged so that
prevalent types of color defective vision encourage one to call a
different numeral (the brightness is not the same for them...)


brian whatcott <inet@intellisys.net>  Altus OK
                Eureka!