Robust Respiration Detection from Remote Photoplethysmography
Photoplethysmography (PPG)-imaging is an emerging non-invasive technique that maps spatial blood-volume variations in living tissue with a video camera. In this paper, we clarify how cardiac-related (i.e., ballistocardiographic; BCG) artifacts occur in this imaging modality and address these using algorithms from the remote-PPG literature. Performance is assessed under stationary conditions at the immobilized hand. Our proposal outperforms the state-of-the-art, Blood Pulsation Imaging (Biomed. Opt. Express 5, 3123 (2014)), even in our best attempt to create diffused illumination. BCG-artifacts are suppressed to an order of magnitude below PPG-signal strength, which is sufficient to prevent interpretation errors.
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Robust Respiration Detection from Remote Photoplethysmography
M. van Gastel, S. Stuijk and G. de Haan.
In Biomedical Optics Express, volume 7, issue 12, 2016, pages 4941-4957. The Optical Society, USA, 2016. (abstract, pdf, doi).