Layered Skin

Jambert · Post by **Jambert** » Fri Dec 04, 2009 10:07 pm

from this post http://www.indigorenderer.com/forum/vie ... f=7&t=7525

Do someone could give us some explanation, how to create layered skin, what kind of material on the layers?
would be nice to see new absorption layer transmittance in action and get a real skin material for indigo

thx

Post by **OnoSendai** » Sat Dec 05, 2009 12:55 pm

I would recommend glossy transparent, exponent < 100, with a SSS medium with red-coloured absorption and uniform scattering, plus a mostly-white absorption layer transmittance texture applied to glossy transparent material for skin blemishes.

Jambert · Post by **Jambert** » Tue Dec 08, 2009 8:41 pm

Thx, will try it whenn I'll get enough time

Whaat · Post by **Whaat** » Wed Dec 09, 2009 2:10 am

Here's a test but without any absorption layer. The bump map is not the best.

Glossy Transparent
IOR=1.15
Exponent=75
SSS=1000
Absorption=86,282,369

Jambert · Post by **Jambert** » Wed Dec 09, 2009 2:33 am

Great, how many spp?

Whaat · Post by **Whaat** » Wed Dec 09, 2009 2:58 am

Jambert wrote:Great, how many spp?

I think about 3500. I'm rendering another version right now without the bump map for reference.

Whaat · Post by **Whaat** » Wed Dec 09, 2009 6:20 am

Another test, no bump, but with blemishes

benn · Post by **benn** » Wed Dec 09, 2009 7:18 am

Gross. It looks like meat.

Meelis · Post by **Meelis** » Wed Dec 09, 2009 8:51 am

Hi

Some info, don't really know how useful.

Simulation of light scattering in human skin
http://www.photonik.de/fileadmin/pdf/fa ... _1_084.pdf

Rendering human skin using a multi-layer reflection model
http://www.naun.org/journals/mcs/mcs-116.pdf

Modified discrete particle model of optical scattering in skin tissue accounting for multiparticle scattering
http://obel.ee.uwa.edu.au/publications/ ... heinze.pdf

Human Skin Modelling and Rendering
http://etd.uwaterloo.ca/etd/gpoirier2004.pdf

Rendering Human Skin
http://www.cg.tuwien.ac.at/research/pub ... _SKIN-.pdf

Post by **OnoSendai** » Wed Dec 09, 2009 10:11 am

nice tests Whaat. The results actually look quite gross and disgusting, which I guess is a good thing as it means it looks realistic

Whaat · Post by **Whaat** » Wed Dec 09, 2009 10:30 am

OnoSendai wrote:nice tests Whaat. The results actually look quite gross and disgusting, which I guess is a good thing as it means it looks realistic

I guess people from NZ must have perfect skin or something! Here in Canada, our skin looks like meat!

Here's another test that came out better. I made some changes to the blemish map (there's still too many of them, but it's just for testing purposes) The skin tone is getting much closer to my own.

Post by **OnoSendai** » Wed Dec 09, 2009 11:28 am

I think that looks pretty good. All that's needed now is some oily patches, and some small hairs, for perfect realism at least.

Jambert · Post by **Jambert** » Wed Dec 09, 2009 9:37 pm

Color is better and better, realy good mat

OnoSendai wrote:I think that looks pretty good. All that's needed now is some oily patches, and some small hairs, for perfect realism at least.

Particul support woulb be nice for hairs?

Jambert · Post by **Jambert** » Wed Dec 09, 2009 9:39 pm

Color is better and better, realy good mat

OnoSendai wrote:I think that looks pretty good. All that's needed now is some oily patches, and some small hairs, for perfect realism at least.

Particul support woulb be nice for hairs?

pixie · Post by **pixie** » Wed Dec 09, 2009 9:58 pm

Just some tweaks I've made:

: skin2.jpg (85.71 KiB) Viewed 9761 times

: skin_f.jpg (96.37 KiB) Viewed 9764 times

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