Yuliya Gitlina
Daljit Singh J. Dhillon
ABSTRACT
Realistic appearance modeling of human skin is an important research topic with a variety of application in computer graphics. Various diffusion based BSSRDF models [Jensen et al. 2001, Donner and Jensen 2005, Donner and Jensen 2006] have been introduced in graphics to efficiently simulate subsurface scattering in skin including modeling its layered structure. These models however assume homogeneous subsurface scattering parameters and produce spatial color variation using an albedo map. In this work, we build upon the spectral scattering model of [Donner and Jensen 2006] and target a practical measurement-based rendering approach for such a spectral BSSRDF. The model assumes scattering in the two primary layers of skin (epidermis and dermis respectively) can be modeled with relative melanin and hemoglobin chromophore concentrations respectively. To drive this model for realistic rendering, we employ measurements of skin patches using an off-the-shelf Miravex Antera 3D camera which provides spatially varying maps of these chromophore concentrations as well as corresponding 3D surface geometry (see Figure 1) using a custom imaging setup.
Supplemental Material
- Jensen, H. W., Marschner, S. R., Levoy, M., and Hanrahan, P. 2001. A practical model for subsurface light transport. In Proceedings of ACM SIGGRAPH 2001, 511--518. Google Scholar
Digital Library
- Donner, C., and Jensen, H. W. 2005. Light diffusion in multi-layered translucent materials. ACM Trans. Graphic. 24, 3, 1032--1039. Google ScholarDigital Library
- Paul Kubelka, "New Contributions to the Optics of Intensely Light-Scattering Materials. Part II: Nonhomogeneous Layers*," J. Opt. Soc. Am. 44, 330--335 (1954).Google Scholar
- Donner, C., and Jensen, H. W. 2006. A spectral BSSRDF for shading human skin. In Rendering Techniques, 409--417. Google ScholarDigital Library
- Donner, C., Weyrich, T., Deon, E., Ramamoorthi, R., and Rusinkiewicz, S. 2008. A Layered, Heterogeneous Reflectance Model for Acquiring and Rendering Human Skin. In Trans. on Graphics (Proc. SIGGRAPH Asia), Vol. 27, 10:1 10:12. Google ScholarDigital Library
Index Terms
Practical measurement-based spectral rendering of human skin
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