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. 2018 Apr 12;6:2700111. doi: 10.1109/JTEHM.2018.2818687

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2168-2372 © 2018 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 3. — Figure showing the heart and respiratory rate obtained from a video of captured from a face captured using phone-flash. (1) Image of a face corresponding to the first frame, superimposed with detected face (red box), detected eyes (blue box) and the detected forehead (green box.). (2) Average Hue as a function of time for the forehead region and it’s corresponding frequency spectrum. (3) Average post-processed Hue (from 0 – 0.1) as a function of time for the forehead region using HR and RR IIR bandpass filters and , and it’s corresponding frequency spectrum and .

Inline graphic — Figure showing the heart and respiratory rate obtained from a video of captured from a face captured using phone-flash. (1) Image of a face corresponding to the first frame, superimposed with detected face (red box), detected eyes (blue box) and the detected forehead (green box.). (2) Average Hue as a function of time for the forehead region and it’s corresponding frequency spectrum. (3) Average post-processed Hue (from 0 – 0.1) as a function of time for the forehead region using HR and RR IIR bandpass filters and , and it’s corresponding frequency spectrum and .