In this study, skin erythema assessment of 90 rosacea patients was estimated by a simple, low-cost RGB imaging device. RGB imaging can be used to estimate the level of redness by analyzing absorption in the green and red spectral channels of a simple RGB camera, as there is an increased absorption of skin chromophore hemoglobin in the spectral range of 500-600nm (corresponding to the green channel) and very little absorption of hemoglobin in the spectral range of 600-700nm (red channel). Different algorithms are used for comparison, and a new erythema index assessment algorithm is proposed and clinically validated. Comparison with dermatologist’s visual assessment shows high correlation.

© 2015 Optical Society of America

PDF Article


You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
Login to access OSA Member Subscription