ECG waveform analysis by significant point extraction. I. Data reduction

Ho Soo Lee, Quin lan Cheng, Nitish V. Thakor

Research output: Contribution to journalArticlepeer-review

15 Scopus citations


We present a new technique for automatic data reduction and pattern recognition of time-domain signals such as electrocardiogram (ECG) waveforms. Data reduction is important because only a few significant features of each heart beat are of interest in pattern analysis, while the patient data collection system acquires an enormous number of data samples. We present a significant point extraction algorithm, based on the analysis of curvature, that identifies data samples that represent clinically significant information in the ECG waveform. Data reduction rates of up to 1 : 10 are possible without significantly distorting the appearance of the waveform. This method is unique in that common procedures help in both data reduction as well as pattern recognition. Part II of this work deals specifically with pattern analysis of normal and abnormal heart beats.

Original languageEnglish (US)
Pages (from-to)410-427
Number of pages18
JournalComputers and Biomedical Research
Issue number5
StatePublished - Oct 1987

ASJC Scopus subject areas

  • Medicine (miscellaneous)


Dive into the research topics of 'ECG waveform analysis by significant point extraction. I. Data reduction'. Together they form a unique fingerprint.

Cite this