Open AccessOptical filter highlighting spectral features Part II: quantitative measurements of cosmetic foundation and assessment of their spatial distributions under realistic facial conditions
Author(s) -
Ken Nishino,
Mutsuko Nakamura,
Masayuki Matsumoto,
Osamu Tanno,
Shigeki Nakauchi
Publication year - 2011
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.19.006031
Subject(s) - foundation (evidence) , filter (signal processing) , face (sociological concept) , calibration , pixel , spatial filter , computer science , optical filter , optics , artificial intelligence , computer vision , mathematics , physics , statistics , social science , archaeology , sociology , history
We previously proposed a filter that could detect cosmetic foundations with high discrimination accuracy [Opt. Express 19, 6020 (2011)]. This study extends the filter's functionality to the quantification of the amount of foundation and applies the filter for the assessment of spatial distributions of foundation under realistic facial conditions. Human faces that are applied with quantitatively controlled amounts of cosmetic foundations were measured using the filter. A calibration curve between pixel values of the image and the amount of foundation was created. The optical filter was applied to visualize spatial foundation distributions under realistic facial conditions, which clearly indicated areas on the face where foundation remained even after cleansing. Results confirm that the proposed filter could visualize and nondestructively inspect the foundation distributions.