23 February 2009 A remote approach to measure blood perfusion from the human face
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A CMOS camera-based imaging photoplethysmography (PPG) system has been previously demonstrated for the contactless measurement of skin blood perfusion over a wide tissue area. An improved system with a more sensitive CCD camera and a multi-wavelength RCLED ring light source was developed to measure blood perfusion from the human face. The signals acquired by the PPG imaging system were compared to signals captured concurrently from a conventional PPG finger probe. Experimental results from eight subjects demonstrate that the camera-based PPG imaging technique is able to measure pulse rate and blood perfusion.
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Jia Zheng, Jia Zheng, Sijung Hu, Sijung Hu, Angelos S. Echiadis, Angelos S. Echiadis, Vince Azorin-Peris, Vince Azorin-Peris, Ping Shi, Ping Shi, Vasilios Chouliaras, Vasilios Chouliaras, } "A remote approach to measure blood perfusion from the human face", Proc. SPIE 7169, Advanced Biomedical and Clinical Diagnostic Systems VII, 716917 (23 February 2009); doi: 10.1117/12.807354; https://doi.org/10.1117/12.807354

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