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31 October 2016 Facial skin color measurement based on camera colorimetric characterization
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The objective measurement of facial skin color and its variance is of great significance as much information can be obtained from it. In this paper, we developed a new skin color measurement procedure which includes following parts: first, a new skin tone color checker made of pantone Skin Tone Color Checker was designed for camera colorimetric characterization; second, the chromaticity of light source was estimated via a new scene illumination estimation method considering several previous algorithms; third, chromatic adaption was used to convert the input facial image into output facial image which appears taken under canonical light; finally the validity and accuracy of our method was verified by comparing the results obtained by our procedure with these by spectrophotometer.
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Boquan Yang, Changhe Zhou, Shaoqing Wang, Xin Fan, and Chao Li "Facial skin color measurement based on camera colorimetric characterization", Proc. SPIE 10022, Holography, Diffractive Optics, and Applications VII, 1002218 (31 October 2016);

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