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 Working on MakeHuman, we have finally found the most easy and robust way to have sss in human skin. We have written a short article (it's WIP !) about how to obtain a good SSS effect using Blender and Gimp. Take a look, and when you improve the basic tecnique (I'm sure of this!) report me the most impressive images. http://makewiki.aleppax.it/pmwiki/pm...BlenderAndGimp Note this is the most basic implementation of this method, perfect to explain the concept, but, of course, it's possible work without use Gimp, in example with these nodes (thanks Alessandro Proglio): http://www.aleppax.it/img/blur-sssUV.jpg Ciao, Manuel (MHteam admin) |
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#1
19-Apr-07, 16:27
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Thanks, I shall surely check this one out! =)
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I'm friends with the King of the Universe website @ www.falgor.net | try this custom theme for the forum! my live music @ youtube |
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#2
19-Apr-07, 16:57
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Have you seen this yet? -> mke3.net / Footprints in a digital world by Matt Ebb » Archive » Fast fake SSS
broken posted this to his blog a while ago and does virtually the same thing, but all within Blender. BgDM
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Forum questions/problems: derek at blenderartists dot org Reality is an illusion caused by lack of alcohol. |
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#3
19-Apr-07, 16:59
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Yeah I did see it. I thought this was something very new... But then again, knowing what is probably coming... secrets... Ton Roosendaal secrets...
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I'm friends with the King of the Universe website @ www.falgor.net | try this custom theme for the forum! my live music @ youtube |
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#4
19-Apr-07, 17:01
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Yeah, I like Matt's way better....less work
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threadless.profile | shirt and print designs my.flickr ((yoj.song)) | music.project Last edited by free_ality; 19-Apr-07 at 18:22. |
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#5
19-Apr-07, 17:07
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Quote:
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#6
19-Apr-07, 17:40
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Manuel
Interesting tut you've got there Manuel! Oh, and I hope makehuman is progresing nicely as it is so useful to me at the moment. Keep up the great work I'm seeing on the Makehuman blog! Koba
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[Sanity is not statistical] |
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#7
19-Apr-07, 17:45
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Nah, I meant Mike.....
not, yeah typo. I was talking to my friend mike...
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threadless.profile | shirt and print designs my.flickr ((yoj.song)) | music.project |
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#8
19-Apr-07, 18:22
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Quote:
Here are more images from our tests:  A simple model with a flat color, without textures and head  The same model but the sss channel is mixed with the render using the "overlay" method.
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 insults: if set,sudo will insult users when they enter an incorrect password. This flag is off by default.
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#9
19-Apr-07, 18:45
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aleppax,
maybe it is the light setup, but the SSS does not work on the cylinder at all!
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C l a a s E i c k e K u h n e n Assistant Professor Industrial Design Kendall College of Art and Design |
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#10
19-Apr-07, 20:48
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the cylinder is there only to be sure that the node setup in the compositor doesn't affect other parts of the scene.
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insults: if set,sudo will insult users when they enter an incorrect password. This flag is off by default.
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#11
19-Apr-07, 23:50
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edit:
Oops, I misread the above node setup, and made a mistaken comment. My bad!
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web log Last edited by broken; 20-Apr-07 at 04:05. |
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#12
20-Apr-07, 03:08
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That certainly is looking very close to what I was getting a few years back from my own renderer. You might remember Manuel, I think you saw that too back then on the old yafray forums.
Thing is, I found these color changes not very natural looking, and worked on it so long trying to improve it that I eventually grew tired of it, and so never did anything with it (as usual...) Anyway, as reference, for those that didn't see it back then, here is what my results looked like for skin, upper left is without sss, the others are various tweaks of the sss method I was using.  As for blurring, you probably want to use a special kind of blur. If you could make a graph of it, it would look like a fast exponential falloff, not like a gaussian blur or any other filters available in blender, but with a sharp peak at it's center, then decaying fast. At least, that is what I think it looks like, can't remember anymore, too long ago.
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There is no excellent beauty that hath not some strangeness in the proportion. Sir Francis Bacon (1561 - 1626) |
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#13
20-Apr-07, 04:14
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To aleppax:
claas is slapping himself  ... somehow some of the renderings look like color dispersentions or viewed through a 3d stereo glasses. I see blue and red edges a lot.
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C l a a s E i c k e K u h n e n Assistant Professor Industrial Design Kendall College of Art and Design |
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#14
20-Apr-07, 04:25
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I've made a compositor node that does that same effect, but without the need for a uv map and baking, and the exponential falloff functions built-in. So no translucency, but only 'blurring the light' over the surface as done here. If you've got a blender compiled you can try the patch:
http://users.pandora.be/blendix/scatter.html |
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#15
20-Apr-07, 04:30
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That is all looking *very* good brecht, well done! From a very quick look at the source, it all looks quite familiar
I spent so long tweaking all those equations...Anyway, very well done, brecht, Keep up the good work! 
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There is no excellent beauty that hath not some strangeness in the proportion. Sir Francis Bacon (1561 - 1626) |
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#16
20-Apr-07, 04:38
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Hey Brecht, that is a nice compositor node... If you read this I do have a few questions:
Is it reall SSS or still some kind of fake method? This is now a compositor node, but is there also some way of making it a material node?...so that you could specify the scattering per material...
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Elissa, female (nudity) : http://blenderartists.org/forum/showthread.php?t=85904 Monster: http://blenderartists.org/forum/show...489#post900489 Kahlan, female (nudity) : http://blenderartists.org/forum/show...=124591&page=3 |
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#17
20-Apr-07, 06:10
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@ BgDM:
We didn't know about Matt's article, anyway the simulation of different light frequency scatter is very important to have a good result. Anyway we can do all using only Blender:  @Eeshlo! Ho eeshlo!! Od course I remember your work! Too bad you have not released it! About blur type...it's just gaussian. Here is a sshot (sorry for italian):  @Brecht: Nice work. We should force Ton to include it in official reelase... |
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#18
20-Apr-07, 07:35
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Interesting node Brecht!
Any chance it will make its way into the CVS? Koba
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[Sanity is not statistical] |
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#19
20-Apr-07, 11:42
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Yesss , i hope too , that this node will be added into the CVS .
Thanks for your nice job Brecht and everybody else for your research .Peace  .
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here's all the blender hotkeys (that is now customizable in blender 2.5) Last edited by kaeru; 20-Apr-07 at 12:32. |
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#20
20-Apr-07, 12:27
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