Abstract
This work deals with contactless detection of heart rate from facial region using the principles of photoplethysmography imaging (PPGI) and low-cost web camera. Our proposed algorithm was realized in MATLAB environment. Using suitable face trackers, the face is tracked, then the signal is obtained from skin and subsequently the signal processing was performed. After obtaining heart rate, it is compared with heart rate signal obtained from traditional contact photoplethysmography (PPG). Obtained heart rate (BPM) can be used in stress evaluation in educational process.
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