Real-time heart activity monitoring with optical illusion using a smartphone


In this study, we obtained a pulsatile photoplethysmogram (PPG) signal from a fingertip using the built-in camera of an iPhone 6 s and displayed a real-time heart activity images with holographic projection on a smartphone screen. Our proposed heart activity hologram is simple and can be easily realized with only a smartphone and overhead projector (OHP… (More)
DOI: 10.1007/s11042-017-4530-3

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