Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!mcnc!thorin!homer!leech From: leech@homer.cs.unc.edu (Jonathan Leech) Newsgroups: comp.graphics Subject: Re: Lambert's Law & the Moon Message-ID: <17775@thorin.cs.unc.edu> Date: 27 Nov 90 16:05:23 GMT References: <27331@cs.yale.edu> <9237@pasteur.Berkeley.EDU> Sender: news@thorin.cs.unc.edu Reply-To: leech@homer.cs.unc.edu (Jonathan Leech) Organization: University of North Carolina, Chapel Hill Lines: 14 In article <9237@pasteur.Berkeley.EDU>, ph@miro.Berkeley.EDU (Paul Heckbert) writes: |>As others have mentioned, the moon and other dusty surfaces are not Lambertian. |>Blinn, in the paper cited below, says they follow the Hapke-Irvine |>illumination model more closely. This may also be of interest, although rather more technical than most computer graphics papers. A good deal of work would need to be done to convert the results into a lighting model. Lumme & Bowell, _Radiative Transfer in the Surfaces of Atmosphereless Bodies_, The Astronomical Journal 86:11, November 1981. This covers radiative transfer with multiple scattering in porous, rough surfaces.