Path: utzoo!attcan!uunet!husc6!bloom-beacon!tut.cis.ohio-state.edu!mailrus!ames!pasteur!helios.ee.lbl.gov!nosc!humu!uhccux!xacct From: xacct@uhccux.uhcc.hawaii.edu (X-Windows Account) Newsgroups: comp.windows.x Subject: Re: Luminance from RGB Message-ID: <2635@uhccux.uhcc.hawaii.edu> Date: 14 Nov 88 14:39:57 GMT References: <8811132229.AA02726@dawn.steinmetz.GE.COM> Organization: University of Hawaii Lines: 16 From article <8811132229.AA02726@dawn.steinmetz.GE.COM>, by stpeters@dawn.UUCP: " " If you had a red phosphor that emitted primarily in two spectral peaks " and the proportional distribution between the peaks depended on the " excitation, you could perceive the emission from the red phosphor as " being blue or green at some intensities. (The emission would have to " be confined virtually entirely to the peaks, whereas real phosphors " emit a continuous background as well as peaks, so such a phosphor " would be very unlikely.) It might also have to part of a high resolution picture of a natural scene, if I recall Land's experiments correctly. I noticed that you used the term 'scene' above the quoted passage. Greg, lee@uhccux.uhcc.hawaii.edu