Key result
Optical imaging techniques, including RGB, thermal, and hyperspectral imaging, provide viable noncontact methods for monitoring vital physiological signals such as heart rate and blood pressure.
Why the study?
Optical imaging methods for noncontact physiological signal monitoring have gained wide recognition and provide spatial information, motivating an overview of these techniques, their processing methods, and applications.
Optical imaging techniques offer promising noncontact methods for monitoring vital signs like heart rate and blood pressure, with various modalities providing spatial information for extensive clinical applications.
Optical imaging may support noncontact vital sign monitoring in select settings; leaves open need for prospective clinical validation.
In recent years, optical imaging techniques have gained wide recognition for the measurement of vital signals, such as heart rate, respiratory rate, oxygen saturation, and blood pressure, which are crucial indicators for evaluating human health conditions in clinical examinations. There is a wide range of optical imaging methods for remote physiological signal monitoring, including RGB imaging, thermal imaging, hyperspectral imaging, depth imaging, and multimodal imaging, which provide spatial information compared to other noncontact measurement approaches, thereby allowing extensive applications in this area. In this survey, some fundamental knowledge about optical imaging methods for vital signal measurement is reviewed, including principles of various optical imaging techniques, processing methods for data analysis, discussion on advantages and disadvantages, application summary, and future prospects. This is a comprehensive overview of the noncontact physiological signal measurement of optical imaging approaches.
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Zhang et al. (2023) reported a review. Optical imaging approaches was evaluated. Optical imaging techniques, including RGB, thermal, and hyperspectral imaging, provide viable noncontact methods for monitoring vital physiological signals such as heart rate and blood pressure.
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