A novel image-based BRDF measurement system and its application to human skin

Jeffrey R. Bintz; Michael J. Mendenhall; Michael A. Marciniak; Samuel D. Butler; James Tommy Lloyd

doi:10.1117/12.2239119

26 September 2016 A novel image-based BRDF measurement system and its application to human skin

Jeffrey R. Bintz, Michael J. Mendenhall, Michael A. Marciniak, Samuel D. Butler, James Tommy Lloyd

Proceedings Volume 9961, Reflection, Scattering, and Diffraction from Surfaces V; 996108 (2016) https://doi.org/10.1117/12.2239119
Event: SPIE Optical Engineering + Applications, 2016, San Diego, California, United States

Abstract

Human skin detection is an important first step in search and rescue (SAR) scenarios. Previous research performed human skin detection through an application specific camera system that ex- ploits the spectral properties of human skin at two visible and two near-infrared (NIR) wavelengths. The current theory assumes human skin is diffuse; however, it is observed that human skin exhibits specular and diffuse reflectance properties. This paper presents a novel image-based bidirectional reflectance distribution function (BRDF) measurement system, and applies it to the collection of human skin BRDF. The system uses a grid projecting laser and a novel signal processing chain to extract the surface normal from each grid location. Human skin BRDF measurements are shown for a variety of melanin content and hair coverage at the four spectral channels needed for human skin detection. The NIR results represent a novel contribution to the existing body of human skin BRDF measurements.

Citation Download Citation

Jeffrey R. Bintz, Michael J. Mendenhall, Michael A. Marciniak, Samuel D. Butler, and James Tommy Lloyd "A novel image-based BRDF measurement system and its application to human skin", Proc. SPIE 9961, Reflection, Scattering, and Diffraction from Surfaces V, 996108 (26 September 2016); https://doi.org/10.1117/12.2239119

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