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Efficient Simulation and Rendering of Sub-surface Scattering
Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, The Institute of Technology.
2013 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

In this thesis, a new improved V-Ray subsurface scattering shader based on the improved diffusion theory is proposed. The new shader supports the better dipole and the quantized diffusion reflectance model for layered translucent materials. These new implemented models build on previous diffusion BSSRDFs and in the case of quantized diffusion uses an extended source function for the material layer. One of the main contributions and significant improvement over V-Ray’s existing subsurface scattering shader is the front and back subsurface scattering separation. This was achieved by dividing the illumination map that is used to calculate each shading’s point color, in two parts: the front part that comes of front lighting and the back one that comes of back lighting. Thus, the subsurface scattering layer can be divided in its consisting parts and each of them can be controlled, weighted and used independently. Finally, the project’s outcome is a new V-Ray material that provides all the above improvements in an intuitive, practical and efficient shader with several intuitive algorithm and light map controls, where artists can create subsurface scattering effects through three subsurface scattering layers.

Place, publisher, year, edition, pages
2013. , 51 p.
Keyword [en]
subsurface scattering, SSS, translucent materials, BSSRDF, shader, V-Ray, Maya, better dipole, quantized-diffusion
National Category
Media and Communication Technology
URN: urn:nbn:se:liu:diva-102754ISRN: LiU-ITN-TEK-A--13/065-SEOAI: diva2:681737
Subject / course
Media Technology
Available from: 2013-12-20 Created: 2013-12-20 Last updated: 2013-12-20Bibliographically approved

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Tsirikoglou, Apostolia
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