Monitoring of Blood Pressure with Video Processing

This paper introduces a novel approach for the purpose of ongoing blood pressure monitoring using a non-invasive method. The method utilizes photoplethysmography (PPG) signals, which are procured from video processing techniques. By leveraging the camera on a smartphone, the video can be easily captured and analyzed to estimate blood pressure. The video is broken down into frames, and the average pixel brightness of these frames is calculated, providing an estimate of blood pressure (BP). To enhance accuracy, a low-pass Butterworth filter is applied to the PPG signals extracted from the video. The system's blood pressure measurements were compared against those of adigital system. The outcomes demonstrated that the suggested approach succeeded with remarkable accuracy, with a measurement error of ±3.38%. This level of error falls well within the acceptable limits for blood pressure measurement, hence demonstrating the efficacy of the developed system. This innovative approach has the potential to revolutionize blood pressure monitoring by offering a convenient, non-invasive, and reliable solution for continuous measurement using smartphone technology.