Non-contact measurement of oxygen saturation with an RGB camera

A novel method (Sophia) is presented to track oxygen saturation changes in a controlled environment using an RGB camera placed approximately 1.5 m away from the subject. The method is evaluated on five healthy volunteers (Fitzpatrick skin phenotypes II, III, and IV) whose oxygen saturations were var...

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Bibliographic Details
Published inBiomedical optics express Vol. 6; no. 9; pp. 3320 - 3338
Main Authors Guazzi, Alessandro R., Villarroel, Mauricio, Jorge, João, Daly, Jonathan, Frise, Matthew C., Robbins, Peter A., Tarassenko, Lionel
Format Journal Article
LanguageEnglish
Published United States Optical Society of America 01.09.2015
Subjects
(170.0110) Imaging systems
(170.0170) Medical optics and biotechnology
(170.1460) Blood gas monitoring
(170.1470) Blood or tissue constituent monitoring
(170.3660) Light propagation in tissues
(280.0280) Remote sensing and sensors
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Summary:A novel method (Sophia) is presented to track oxygen saturation changes in a controlled environment using an RGB camera placed approximately 1.5 m away from the subject. The method is evaluated on five healthy volunteers (Fitzpatrick skin phenotypes II, III, and IV) whose oxygen saturations were varied between 80% and 100% in a purpose-built chamber over 40 minutes each. The method carefully selects regions of interest (ROI) in the camera image by calculating signal-to-noise ratios for each ROI. This allows it to track changes in oxygen saturation accurately with respect to a conventional pulse oximeter (median coefficient of determination, 0.85).
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ISSN:2156-7085
2156-7085
DOI:10.1364/BOE.6.003320