tag:blogger.com,1999:blog-2999230124118604245.post5437142430609098231..comments2024-03-28T06:18:17.942-04:00Comments on Gurney Journey: Subsurface Scattering IJames Gurneyhttp://www.blogger.com/profile/01870848001990898499noreply@blogger.comBlogger6125tag:blogger.com,1999:blog-2999230124118604245.post-6130151021839395892008-05-11T20:51:00.000-04:002008-05-11T20:51:00.000-04:00Thanks!-SarahThanks!<BR/>-SarahSarah Stevensonhttps://www.blogger.com/profile/16534942492714970282noreply@blogger.comtag:blogger.com,1999:blog-2999230124118604245.post-31137259156406413952008-05-09T21:07:00.000-04:002008-05-09T21:07:00.000-04:00A. fortis: The classic materials for subsurface sc...A. fortis: The classic materials for subsurface scattering are skin, wax, marble, jade, and milk. The idea is that the material should have some volume, so that you can see how far the light travels into it. How big? I suppose a huge iceberg could scatter light pretty far inside.<BR/><BR/>A translucent bathroom window or a backlit leaf or a piece of stained glass is similar, but that falls more into the category of "transmitted light" since it's more two-dimensional.James Gurneyhttps://www.blogger.com/profile/01870848001990898499noreply@blogger.comtag:blogger.com,1999:blog-2999230124118604245.post-68816564815940099892008-05-09T20:45:00.000-04:002008-05-09T20:45:00.000-04:00I wonder how large an object can get before this e...I wonder how large an object can get before this effect starts to break down? Or if there are any particularly large objects that show subsurface scattering? <BR/><BR/>Is this the same effect that I'm seeing when I look, for instance, at my opaque bathroom window, which simply shows an evenly distributed glow when backlit? Or is subsurface scattering specific to fleshy objects? <BR/><BR/>Sorry--I'm full of questions today! This is interesting, though...now I kind of want to do enormous paintings of backlit orange slices...Sarah Stevensonhttps://www.blogger.com/profile/16534942492714970282noreply@blogger.comtag:blogger.com,1999:blog-2999230124118604245.post-54893171933814675612008-05-08T08:45:00.000-04:002008-05-08T08:45:00.000-04:00Being from Antwerp, this is the best post ever, be...Being from Antwerp, this is the best post ever, because it features a face painted by a neighbour of mine - my good friend Peter Paul!<BR/>In fact this head he painted is one of my all time favorite painted faces.<BR/>It's from a biblical scene and portrays a (hypocritical) high priest, confronting Jesus with an adulterous woman, which lead to Jesus proclaiming the famous words "Let him who is without sin cast the first stone".<BR/><BR/>Should pay my good neighbour a visit.<BR/>Haven't seen him for a while - since...1640 I think.Erik Bongershttps://www.blogger.com/profile/02409523352634066030noreply@blogger.comtag:blogger.com,1999:blog-2999230124118604245.post-36129705687215833262008-05-08T07:25:00.000-04:002008-05-08T07:25:00.000-04:00Thanks for that fascinating link. And I completely...Thanks for that fascinating link. And I completely agree with you about how the pioneering work of the CGI people really benefits traditional painters.James Gurneyhttps://www.blogger.com/profile/01870848001990898499noreply@blogger.comtag:blogger.com,1999:blog-2999230124118604245.post-78712123267910651322008-05-08T04:19:00.000-04:002008-05-08T04:19:00.000-04:00For an in depth look at subsurface scattering it's...For an in depth look at subsurface scattering it's worth reading Henrik Wann Jensen's papers as he, in the realm of computer graphics anyway, is the grand-daddy of all of this. <A HREF="http://graphics.ucsd.edu/~henrik/images/subsurf.html" REL="nofollow">Link</A>.<BR/><BR/>It's really cool that you're covering some of this hard science here. Although I started out as a traditional fine artist I've ended up making CGI for films and I do find that the techniques and scientific theory I've learned doing VFX work feed back into my painting and drawing. It's quite a symbiotic relationship with ideas and theories from one field informing the other.Mr Atrocityhttps://www.blogger.com/profile/09221966730193590245noreply@blogger.com