[Tracing algorithms of ECG tracks from scanned image].
This paper presents a discussion on the tracing algorithms of the extraction of Electrocardiogram (ECG) data from scanned image of hardcopy ECG. We have advanced a new algorithm integrated by seek-and-predict method and polygon model method, which can tolerate crossing of two leads, fault-line and disturbing of grid lines. Two practical situations that may be encountered while processing hardcopy ECG are discussed in detail. Furthermore, the after-treatment of extraction-filtering is considered and an SVD-based filter designed to smooth ECG signal is analyzed.
Cheng
F
F
Department of Engineering Physics, Tsinghua University, Beijing 100084.
Gao
R
R
Wei
Y
Y
D000465:Algorithms; D003627:Data Interpretation, Statistical; D004562:Electrocardiography / Q000706:statistics & numerical data*; D001330:Electronic Data Processing; D008962:Models, Theoretical; D012815:Signal Processing, Computer-Assisted