Key result
Non-contact blood pressure estimation using forehead and palm infrared video surpassed the accuracy standards set forth by the BHS and AAMI protocols.
Why the study?
While RGB cameras have been used for non-contact blood pressure monitoring, the potential of using low-cost infrared cameras under low-light or night-time conditions remained to be explored.
Does non-contact blood pressure monitoring using infrared cameras provide accurate BP estimation?
Does non-contact blood pressure monitoring using infrared cameras provide accurate BP estimation?
Low-cost infrared cameras using Eulerian Video Magnification can accurately estimate blood pressure from the forehead and palm in low-light conditions, meeting established clinical accuracy standards.
Supports feasibility of infrared-based non-contact BP monitoring in frail patients; leaves open validation before clinical use.
This study investigates the potential of low-cost infrared cameras for non-contact monitoring of blood pressure (BP) in individuals with fragile health, particularly the elderly. Previous research has shown success in developing non-contact BP monitoring using RGB cameras. In this study, the Eulerian Video Magnification (EVM) technique is employed to enhance minor variations in skin pixel intensity in specific facial regions captured by an infrared camera from the forehead and palm. The primary focus of this study is to explore the possibility of using infrared cameras for non-contact BP monitoring under low-light or night-time conditions. We have successfully shown that by employing a series of straightforward signal processing techniques and regression analysis, we were able to achieve commendable outcomes in our experimental setup. Specifically, we were able to surpass the stringent accuracy standards set forth by the British Hypertension Society (BHS) and the Association for the Advancement of Medical Instrumentation (AAMI) protocol.
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Stogiannopoulos et al. (2024) studied this question. Non-contact blood pressure estimation using forehead and palm infrared video was evaluated on Accuracy standards set forth by the British Hypertension Society (BHS) and the Association for the Advancement of Medical Instrumentation (AAMI) protocol. Non-contact blood pressure estimation using forehead and palm infrared video surpassed the accuracy standards set forth by the BHS and AAMI protocols.
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