Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!usc!wuarchive!zaphod.mps.ohio-state.edu!rpi!crdgw1!crdos1!davidsen
From: davidsen@crdos1.crd.ge.COM (Wm E Davidsen Jr)
Newsgroups: comp.arch
Subject: Re: Resolution, etc.
Message-ID: <2937@crdos1.crd.ge.COM>
Date: 20 Nov 90 14:50:22 GMT
References: <240@csinc.UUCP> <1990Nov15.052925.1265@imax.com> <2928@crdos1.crd.ge.COM> <1990Nov19.195042.19240@imax.com>
Reply-To: davidsen@crdos1.crd.ge.com (bill davidsen)
Followup-To: comp.graphics
Distribution: na
Organization: GE Corp R&D Center, Schenectady NY
Lines: 29

In article <1990Nov19.195042.19240@imax.com> dave@imax.com (Dave Martindale) writes:

| I said:
| >  Therefore I conclude that for human viewing of "real world" images
| >(ie. things which physically exist) you can do 8/24 bit mapping with
| >good results.
| 
| I suspect we have different definitions of "acceptable".  Mine is
| "you can't see any artifacts due to the transfer from film to digital".
| Yours may be "it looks pretty good".  This may be adequate for
| most people dealing with images, but it certainly isn't good enough for
| everyone.

  I think it's more a definition of "real world images." It sounds like
you are working with electronic images, rather than things you can
actually photograph. I'm talking about the realm of optical viewing of
physical objects, not any of the other image forming technologies.

  These images don't tend to have the wide smooth sweeps of slowly
changing color which show artifact. Not that you can't find some images
somewhere which produce this effect, but that typical images do not lose
information. Obviously you can say there is a world of information with
a 36 bit scanner, and I'm missing it all with my 24 bit scanner, so all
I can say is that what I see works with 256 colors.

  Redirected to comp.graphics...
-- 
bill davidsen	(davidsen@crdos1.crd.GE.COM -or- uunet!crdgw1!crdos1!davidsen)
    VMS is a text-only adventure game. If you win you can use unix.