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http://dx.doi.org/10.6109/jkiice.2015.19.4.917

Evaluation of PPG signals regarding to video attributes of smart-phone camera  

Lee, Haena (Department of Emotion Engineering, Graduate School, Sangmyung University)
Kim, Minhee (Department of Emotion Engineering, Graduate School, Sangmyung University)
Whang, MinCheol (Department of Media Software, College of Software, Sangmyung University)
Kim, Dong Keun (Department of Media Software, College of Software, Sangmyung University)
Publication Information
Journal of the Korea Institute of Information and Communication Engineering / v.19, no.4, 2015 , pp. 917-924 More about this Journal
Abstract
In this study, we study that the video attributes captured by built-in camera in smart-phone can effect on the quality of PPG signal. The conditions of video attributes were composed of the bitrate, the resolution, the flash. As each condition, we measured a change in the red value of the video image and calculated a PPI(Pulse to Pulse Interval) for extracting the pulse wave signal. 20 subjects participated in the experiment and this experiment was carried out 18 tasks. The PPG signal was measured simultaneously for two minutes with the PPG sensor in the middle finger and Smart-phone in the forefinger of the right hand. By proceeding the correlation analysis, we obtained the highest correlation condition(83%, p=0.01), which the resolution was $640{\times}480$, bitrate was 5000kbps, flash was on. As a result, this study will be a useful guide for quality of signals in the pulse signal measurement system using built-in camera in smart-phone.
Keywords
PPG Signal; Video Attribute; Bitrate; Resolution; Flash; Smart-phone Camera;
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Times Cited By KSCI : 2  (Citation Analysis)
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