Evaluating multi-spectral imaging system for real-time
mapping pigments in human skin

Masahiro OKUYAMA, Norimichi TSUMURA, and Yoichi MIYAKE

Department of Information and Image Sciences, Chiba University 1-33, Yayoi-cho, Inage-ku, Chiba 263-8522, Japan

OPTICAL REVIEW Vol. 10, No. 6, pp.580-584(2003). @

Abstract
The multi-spectral imaging system is evaluated for real-time mapping melanin density, totalhemoglobin density and oxygen saturation in human skin. The system is expected to obtain useful information about human health condition. In the system, the distribution of pigments in human skin are estimated and displayed from digital video signals in real time by using three precomputed look-up tables for color conversions. The accuracy of the system is analyzed based on the computer simulation by changing the number of bands, quantization levels of camera systemCdimension of approximation for spectral reflectance. The optimal system is examined for the point of feasibility of the system empirically.

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