PPG Beat Reconstruction Based on Shape Models and Probabilistic Templates for Signals Acquired with Conventional Smartphones

摘要

Ubiquitous monitoring has become a useful tool for the pre-vention and early diagnosis of some disorders. This kind of monitoringhas been promoted last years thanks to the irruption of the smartphones,which make easier the collection and delivery of the patient's data. How-ever, there are some problems with the quality of the acquired data. Thispaper presents a novel methodology in which the shape of PPG beats isrecovered through a multistage full-automatic pipeline including shapemodeling stage and template{based (template estimated from the sur-rounding beats) shape recovery through a level{set approach. To validatethe proposal, a registry acquired using the camera of a Motorola MotoGhas been used. Results can be quali ed as promising, since the shape ofdamaged beats is recovered, however a more comprehensive validationmust be addressed.