Title :
A model-based artifact reduction method for the non-invasive estimation of blood oxygen saturation
Author :
Yan, Y.S. ; Zhang, Y.T.
Author_Institution :
Dept. of Electron. Eng., Chinese Univ. of Hong Kong
Abstract :
We present a novel motion-artifact (MA) insensitive method for the estimation of blood oxygen saturation (SpO2), based on a heuristic physical model of the photoplethysmographic(PPG) signal with a multiplicative component representing motion artifact. This new method calculates the ratio of ratios R using the first derivative values of zero-crossing points of PPG signals, which possesses the inherent insensitivity to motion artifact. Four types of motions, as the source of motion artifact, were investigated to test the performance of the new approach. A quantitative comparison between the conventional method and the newly proposed method was undertaken based on the practical experiments. It was found that the new approach had a significant reduction in the estimation error of SpO2, compared with the conventional method
Keywords :
bio-optics; biomechanics; blood; estimation theory; oxygen; plethysmography; heuristic physical model; model-based artifact reduction method; motion-artifact insensitive method; noninvasive blood oxygen saturation estimation; photoplethysmographic signal; zero-crossing points; Biomedical engineering; Blood; Motion estimation; Notice of Violation; Optical distortion; Optical saturation; Oxygen; Signal processing; Testing; Yield estimation; Photoplethysmography (PPG); blood oxygen saturation (SpO2); motion artifact (MA);
Conference_Titel :
Computer Architectures for Machine Perception, 2003 IEEE International Workshop on
Conference_Location :
Hong Kong
Print_ISBN :
0-7803-8612-4
DOI :
10.1109/ISSMD.2004.1689569
