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- W2765521554 abstract "Heart rate monitoring via optically remote noncontact technique was reported in this research. A green laser (5 mW, 532±10 nm) was projected onto the left carotid artery. The reflected laser light on the screen carried the deviation of the interference patterns. The interference patterns were recorded by the digital camera. The recorded videos of the interference patterns were frame by frame analysed by 2 standard digital image processing (DIP) techniques, block matching (BM) and optical flow (OF) techniques. The region of interest (ROI) pixels within the interference patterns were analysed for periodically changes of the interference patterns due to the heart pumping action. Both results of BM and OF techniques were compared with the reference medical heart rate monitoring device by which a contact measurement using pulse transit technique. The results obtained from BM technique was 74.67 bpm (beats per minute) and OF technique was 75.95 bpm. Those results when compared with the reference value of 75.43±1 bpm, the errors were found to be 1.01% and 0.69%, respectively." @default.
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- W2765521554 date "2017-09-01" @default.
- W2765521554 modified "2023-09-25" @default.
- W2765521554 title "Optically Remote Noncontact Heart Rates Sensing Technique" @default.
- W2765521554 cites W2480570980 @default.
- W2765521554 doi "https://doi.org/10.1088/1742-6596/901/1/012108" @default.
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