- 9 July 2015: slides from our Eurographics 2015 presentation uploaded!
- 5 February 2015: web launched!
This paper presents a time-varying, multi-layered biophysically-based model of the optical properties of human skin, suitable for simulating appearance changes due to aging. We have identified the key aspects that cause such changes, both in terms of the structure of skin and its chromophore concentrations, and rely on the extensive medical and optical tissue literature for accurate data. Our model can be expressed in terms of biophysical parameters, optical parameters commonly used in graphics and rendering (such as spectral absorption and scattering coefficients), or more intuitively with higher-level parameters such as age, gender, skin care or skin type. It can be used with any rendering algorithm that uses diffusion profiles, and it allows to automatically simulate different types of skin at different stages of aging, avoiding the need for artistic input or costly capture processes.
We thank Dr. Maria P. Matilde for our insightful discussions about skin aging, Jose I. Echevarria for his help putting together the manuscript, and Sergio Garcia, Alex Huguet and Zbynek Kysela for the head models. This research has been partially funded by the EU FP7 Program, through projects GOLEM and VERVE, as well as the Spanish Ministry of Economy and Competitiveness through project LIGHTSLICE.