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  • Title: The effect of lossy ECG compression on QRS and HRV feature extraction.
    Author: Twomey N, Walsh N, Doyle O, McGinley B, Glavin M, Jones E, Marnane WP.
    Journal: Annu Int Conf IEEE Eng Med Biol Soc; 2010; 2010():634-7. PubMed ID: 21096542.
    Abstract:
    This paper describes the performance of beat detection and heart rate variability (HRV) feature extraction on electrocardiogram signals which have been compressed and reconstructed with a lossy compression algorithm. The set partitioning in hierarchical trees (SPIHT) compression algorithm was used with sixteen compression ratios (CR) between 2 and 50 over the records of the MIT/BIH arrhythmia database. Sensitivities and specificities between 99% and 85% were computed for each CR utilised. The extracted HRV features were between 99% and 82% similar to the features extracted from the annotated records. A notable accuracy drop over all features extracted was noted beyond a CR of 30, with falls of 10% accuracy beyond this compression ratio.
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