From CHandley@GANDALF.OTAGO.AC.NZ Ukn Aug 2 06:22:23 1993 Received: from YALEVM.YCC.YALE.EDU by MINERVA.CIS.YALE.EDU via SMTP; Mon, 2 Aug 1993 06:22:20 -0400 Received: from CUVMB.CC.COLUMBIA.EDU by YaleVM.YCC.Yale.Edu (IBM VM SMTP V2R2) with BSMTP id 9239; Mon, 02 Aug 93 06:21:10 EDT Received: from CUVMB.COLUMBIA.EDU by CUVMB.CC.COLUMBIA.EDU (Mailer R2.07) with BSMTP id 8498; Mon, 02 Aug 93 00:39:10 EDT Date: Mon, 2 Aug 1993 16:42:01 GMT+1200 Reply-To: Chris Handley Sender: Lojban list From: Chris Handley Organization: University of Otago Subject: Re: Color words (was: Re: comments on the batch of lujvo et To: Erik Rauch Status: RO X-Status: Message-ID: >Chris Handley asseverates: ++++++++++ > I agree with most of this. If you >think of the HLS cone (a cone with the point down) then the 'colours' can >be arranged around the perimeter with white at the centre of the disc on >the top and black at the point at the bottom. Then one specifies a hue by >(essentially) an angle, saturation by a number in the range [0,1] >(fractional distance from centre) and brightness by distance from the >point, again [0,1]. In this system 'white/whitish' as a sort of synonym for >'pale' or 'unsaturated' becomes reasonable. >Colin replies++++++++++++ > It's usual to use a double cone (points at top and bottom), because as the >brightness increases beyond the mid-point towards white, the maximum >perceived saturation decreases, until at white there is no freedom of >saturation or hue. > I'll buy that. ====================================================================== Chris Handley chandley@otago.ac.nz Dept of Computer Science Ph (+64) 3-479-8499 University of Otago Fax (+64) 3-479-8577 Dunedin, NZ ______________________________________________________________________ There are three types of Computer Scientist: those who can count and those who can't.