Interactive rendering for realistic face via three-layer material model

An interactive rendering platform is designed based on three-layer material model. The specular reflection of human skin is approximated based on the bidirectional reflectance distribution function, and the subsurface scattering is effectively simulated using sum-of-Gaussians blur and texture coordinates stretch correction. Combining specular reflection with subsurface scattering, the final real-time rendering for realistic face is obtained. The interactive platform provides a friendly interface for user to operate digital character, views the reflection and scattering effect when the incoming light is rotating, adds high-dynamic range environment map in real-time, and adjusts intensity of illumination and degree of blur, which greatly help user to control and design digital character.