Lepu Medical Technology (beijing) Co., Ltd.

Zejian Wu

Jun Cao

A method for generating PPG signals may include sequentially performing single-frame red and green channel data calculation on all skin surface video data frame images of a frame image sequence of skin surface video data according to preset red and green light pixel threshold ranges to generate first red and green light signals; performing signal band-pass filtering preprocessing on the first red and green light signals to generate second red and green light digital signals; obtaining a preset signal determination identifier; determining whether to perform signal maximum frequency difference determination on the second red light signal and the second green light signal, and generating a first determination result; when the first determination result is an up-to-standard signal identifier, performing signal-to-noise ratio determination on the second red and/or green light signal to generate a second determination result; and when the second determination result is the up-to-standard signal identifier, generating a PPG signal.

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Shanghai, China

Zejian Wu