Abstract: In this paper, the rendering based on the three-layer material model, and the scattering effect of light on the surface of skin is simulated by bidirectional surface scattering reflectance distribution function (BSSRDF). A approach is proposed for real-time rendering of human skin, which uses the Radial Basis Function neural network to fit the subsurface scattering profile. The training data for neural network are precomputed by offline render. Experimental results show that the approach is capable of reducing the redundant training data, evaluating fast and rendering well.

Key words: BSSRDF, RBF neural network, three-layer material model, realistic rendering, real-time rendering