Visualization of reflectance, transmittance, and application amount distribution of the cosmetic foundation layer on skin

Abstract

We developed a method for visualization of makeup finishing with structured lighting. By analyzing images with a sequence of projection patterns, reflectance and transmittance of the cosmetic foundation (FD) layer were extracted as spatial maps using the difference between the light spread of bare skin and made-up skin. The spatial maps reflect conditions and distribution of applied FD under real situations. By calibrating the relationship between optical properties and the amount of FD applied, the application amount distribution was also estimated. Additionally, we proposed approximation formulae to estimate the above values without images of bare skin. These formulae provide good agreement with the original formula for reflectance.