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Erschienen in:
2013 | OriginalPaper | Buchkapitel
ROI Selection for Remote Photoplethysmography
verfasst von : Georg Lempe, Sebastian Zaunseder, Tom Wirthgen, Stephan Zipser, Hagen Malberg
Erschienen in: Bildverarbeitung für die Medizin 2013
Verlag: Springer Berlin Heidelberg
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Camera-based remote photoplethysmography (rPPG) is a technique that can be used to measure vital signs contactlessly. In order to optimize the extraction of photoplethysmographic signals from video sequences, we investigate the spatial dependence of the photoplethysmographic signal. For an evaluation of the suitability of various regions of interest for rPPG measurements, we conducted a study on 20 healthy subjects. We analysed the videos using a refined pulse amplitude mapping approach. Our results show that the signal-to-noise ratio of rPPG signals can be improved by limiting the region of interest to certain regions of the face.