19 April 2000 Validation of self-reported skin color via analysis of diffuse reflectance spectra of skin
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Proceedings Volume 3917, Optical Biopsy III; (2000) https://doi.org/10.1117/12.382739
Event: BiOS 2000 The International Symposium on Biomedical Optics, 2000, San Jose, CA, United States
The validity of self-reported skin color was assessed by comparing the responses of a skin color survey with the external measure of diffuse reflectance spectrophotometry. Reflectance spectra of 108 subjects were measured at sites on the arm normally exposed to sunlight and sites normally unexposed to sunlight. The reflectance spectra were analyzed with a variety of discriminating algorithms, such as principal component analysis, and competitive neural networks. For subjects with light and dark skin, there was good correspondence between the survey results and groupings derived by the neural network analysis. For those people reporting medium skin color, the correspondence with the neural network groupings was poor. It was unclear if this was due to poor self-reporting or deficiencies in the spectral analysis.
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Robert A. Weersink, Robert A. Weersink, Lorraine D. Marrett, Lorraine D. Marrett, Lothar D. Lilge, Lothar D. Lilge, Mark Purdue, Mark Purdue, Stephen Walter, Stephen Walter, "Validation of self-reported skin color via analysis of diffuse reflectance spectra of skin", Proc. SPIE 3917, Optical Biopsy III, (19 April 2000); doi: 10.1117/12.382739; https://doi.org/10.1117/12.382739

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