ECG Compression using Wavelet Packet, Cosine Packet and Wave Atom Transforms

This paper presents and analyzes Wavelet Packet, Cosine Packet and Wave Atom Transforms based electrocardiogram (ECG) compression. The ECG signal is first transformed using these transforms. The transformed coefficients are thresholded in order to match the predefined user specified percentage root mean square difference (PRD) within the tolerance. The non-zero thresholded coefficients are then quantized and encoded by arithmetic coding. The results are presented on different ECG signals of varying characteristic. The results show that Wavelet Packet Transform gives better performance at high PRD where as at low PRD, Wave Atom Transform performs better.