Electrocardiogram baseline removal

摘要

A system includes a low pass-filter and a Savitzky-Golay filter. The low-pass filter receives and processes a first electrocardiogram signal. The filter removes at least the high frequency components of the first electrocardiogram signal. The Savitzky-Golay filter estimates a baseline variation of the first electrocardiogram signal from the filtered first electrocardiogram signal. Related apparatus, systems, techniques and articles are also described.

主权项

1. A system comprising:
a low-pass filter configured to receive and process a first electrocardiogram signal, the low-pass filter removing at least high frequency components of the first electrocardiogram signal thereby producing a filtered first electrocardiogram signal; a down-sampler configured to reduce a sampling rate of the filtered first electrocardiogram signal; a Savitzky-Golay filter configured to estimate a baseline variation of the first electrocardiogram signal from the down-sampled filtered first electrocardiogram signal; an up-sampler configured to increase a sampling rate of the baseline variation; a delay module configured to time shift the first electrocardiogram signal thereby producing a time shifted first electrocardiogram signal; and a combination module configured to combine the time shifted first electrocardiogram signal and the up-sampled baseline variation thereby producing a second electrocardiogram signal with the baseline variation removed; wherein the second electrocardiogram signal is provided by at least one of displaying the second electrocardiogram signal in an electronic visual display, transmitting the second electrocardiogram signal to a remote computing system, storing the second electrocardiogram signal in a physical storage media, or loading the second electrocardiogram signal into memory.