Journal ArticleDOI
A wavelet transform-based ECG compression method guaranteeing desired signal quality
Jie Chen,Shuichi Itoh +1 more
TLDR
A new electrocardiogram compression method based on orthonormal wavelet transform and an adaptive quantization strategy, by which a predetermined percent root mean square difference (PRD) can be guaranteed with high compression ratio and low implementation complexity are presented.Abstract:
This paper presents a new electrocardiogram (ECG) compression method based on orthonormal wavelet transform and an adaptive quantization strategy, by which a predetermined percent root mean square difference (PRD) can be guaranteed with high compression ratio and low implementation complexity.read more
Citations
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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
Constrained ECG compression algorithm using the block-based discrete cosine transform
TL;DR: A novel method dedicated to ECG compression that uses the block-based discrete cosine transform and considers the percent root-mean-square difference (PRD) as a controlled quality criterion, and is classified as a valid concurrent to some recently published powerful methods.
Journal ArticleDOI
Electrocardiogram Compression Method Based on the Adaptive Wavelet Coefficients Quantization Combined to a Modified Two-Role Encoder
TL;DR: An effective method for electrocardiogram (ECG) compression is proposed, based on the pyramidal digital wavelet transform, which demonstrates clearly the method efficiency and the tradeoff rate-distortion is ensured successfully.
Journal ArticleDOI
Wavelet-based enhancement of lung and bowel sounds using fractal dimension thresholding-part II: application results
TL;DR: Quantitative and qualitative analysis of the experimental results show an efficient performance of the WT-FD filter to circumvent the noise presence by faithfully extracting the authentic structure of ELS and EBS from the background noise, enabling the physician to better interpret the auscultation findings.
References
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Journal ArticleDOI
Orthonormal bases of compactly supported wavelets
TL;DR: This work construct orthonormal bases of compactly supported wavelets, with arbitrarily high regularity, by reviewing the concept of multiresolution analysis as well as several algorithms in vision decomposition and reconstruction.
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A Technique for High-Performance Data Compression
TL;DR: A new compression algorithm is introduced that is based on principles not found in existing commercial methods in that it dynamically adapts to the redundancy characteristics of the data being compressed, and serves to illustrate system problems inherent in using any compression scheme.
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Digital Coding of Waveforms: Principles and Applications to Speech and Video
Journal ArticleDOI
ECG data compression techniques-a unified approach
TL;DR: 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.
Journal ArticleDOI
Wavelet and wavelet packet compression of electrocardiograms
TL;DR: Pilot data from a blind evaluation of compressed ECG's by cardiologists suggest that the clinically useful information present in original ECG signals is preserved by 8:1 compression, and in most cases 16:1 compressed ECGs are clinically useful.