Journal ArticleDOI
ECG data compression techniques-a unified approach
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TLDR
The theoretical bases behind the direct ECG data compression schemes are presented and classified into three categories: tolerance-comparison compression, DPCM, and entropy coding methods and a framework for evaluation and comparison of ECG compression schemes is presented.Abstract:
Electrocardiogram (ECG) compression techniques are compared, and a unified view of these techniques is established. ECG data compression schemes are presented in two major groups: direct data compression and transformation methods. The direct data compression techniques are ECG differential pulse code modulation (DPCM) and entropy coding, AZTEC, Turning-point, CORTES, Fan and SAPA algorithms, peak-picking, and cycle-to-cycle compression methods. The transformation methods include Fourier, Walsh, and Karhunen-Loeve transforms. The theoretical bases behind the direct ECG data compression schemes are presented and classified into three categories: tolerance-comparison compression, DPCM, and entropy coding methods. A framework for evaluation and comparison of ECG compression schemes is presented. >read more
Citations
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Journal ArticleDOI
ECG data compression using optimal non-orthogonal wavelet transform
TL;DR: The proposed technique yields the lowest PRD compared to the other two algorithms and for a compression ratio less than 10 the optimal transform can be obtained for only one ECG period, however, for a higher compression ratio the PRD is smaller for long signals.
Book ChapterDOI
ECG Signal Compression Using Different Techniques
TL;DR: When compared, Discrete Cosine Transform and Fast Fourier Transform give better compression ratio, while Discrete Wavelet Transform yields good fidelity parameters with comparable compression ratio.
Journal ArticleDOI
Technical communication: Improved modified AZTEC technique for ECG data compression: Effect of length of parabolic filter on reconstructed signal
TL;DR: An efficient DDC algorithm, which has been developed over existing modified Amplitude Zone Time Epoch Coding (AZTEC) technique, named as improved modified AZTEC and tested on Common Standard for quantitative Electrocardiography (CSE) database is dealt with.
Journal ArticleDOI
Wavelet threshold based TDL and TDR algorithms for real-time ECG signal compression
TL;DR: Experimental results show that the TDR algorithm achieves the required compression data rate to meet the demands of wire/wireless link while the TDL algorithm does not, and demonstrates that the proposed TDR algorithms is suitable for real-time applications.
Journal ArticleDOI
Scalable medical data compression and transmission using wavelet transform for telemedicine applications
TL;DR: Numerical results show that, besides having low network complexity, the LSPIHT attains better rate-distortion performance as compared with other algorithms for encoding medical data.
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