Jeppe Revall Frisvad is an associate professor at Technical University of Denmark (DTU). He received an MSc(Eng) in applied mathematics and a PhD in computer graphics both from DTU. Frisvad has more than 15 years of experience in material appearance modeling and rendering. As a highlight, his work includes the first directional dipole model for subsurface scattering, and his research on material appearance includes methods for both computation and photographic measurement of the optical properties of materials.