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. 2014 Oct 6;2:1800811. doi: 10.1109/JTEHM.2014.2360200

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2168-2372 © 2014 IEEE. Translations and content mining are permitted for academic research only. Personal use is also permitted, but republication/redistribution requires IEEE permission. See http://www.ieee.org/publications_standards/publications/rights/index.html for more information.

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FIGURE 6. — Box-and-whisker plot showing better correlation coefficients from in the RGB channels with minimum light intensity for (68%), 490 nm (38%), 505 nm (48%), 590 nm (9%), 600 nm (4%), 610 nm (3.8%), 625 nm (3.5%) and 660nm (2%) wavelengths. The red cross are drawn as outliers if they are larger than (q3 - q1) or smaller than q1 – 1.5(q3 - q1), where q1 and q3 are the 25th and 75th percentiles, respectively. These representative data are from twelve subjects.

Inline graphic — Box-and-whisker plot showing better correlation coefficients from in the RGB channels with minimum light intensity for (68%), 490 nm (38%), 505 nm (48%), 590 nm (9%), 600 nm (4%), 610 nm (3.8%), 625 nm (3.5%) and 660nm (2%) wavelengths. The red cross are drawn as outliers if they are larger than (q3 - q1) or smaller than q1 – 1.5(q3 - q1), where q1 and q3 are the 25th and 75th percentiles, respectively. These representative data are from twelve subjects.