Bacon & Thomas, PLLC
Non-contact method for detecting physiological signal and motion in real time
A method includes: sensing a portion of a human body to generate a series of image frames by an optical sensing element; determining a complexion region from each of the image frames; then calculating a central coordinate of the complexion region; determining a sample block by expanding a surrounding range from the central coordinate, for getting a complexion fluctuation waveform; comparing the central coordinate with a central coordinate of a later image frame, to calculate a displacement in a unit time for determining whether the portion of the human body is in a static state. In the static state, an operating unit performs noise filter and peak detecting for complexion fluctuation waveform, and calculates a physiological signal. The method can reduce the amount of data required to be processed in physiological signal detection, and improve the accuracy of the detection.
NATIONAL TAIWAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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Guan-You Yu-Chen Meng-Han Yuan-Hsiang
Lin Lin Li Lin