Tomonori YUASA¹, Ryosuke HONMA¹, Hideki FUNAMIZU¹, Izumi NISHIDATE², and Yoshihisa AIZU¹

¹Instrumentation Systems Engineering Laboratory, Muroran Institute of Technology, Muroran, Hokkaido 050-8585, Japan
²Graduate School of Bio-Applications and Systems Engineering, Tokyo University of Agriculture and Technology, Koganei, Tokyo 184-8588, Japan

(Received October 15, 2013; Accepted January 13, 2014)

We are developing a daily health monitoring system that uses mobile phones with cameras and analyzes physiological conditions from R, G, and B intensity levels. However, since it is affected by various imaging conditions of the image input, color correction is required for accurate health monitoring. Therefore, we developed and validated a color-correction algorithm to derive reliable color information by correcting the spectral reflectance using the Wiener estimation and a color chart.

Key words: color correction, color chart, Wiener estimation, spectral reflectance