Mixed-transform based codec for 2D compression of ECG signals
arXiv:1908.03433
Abstract
A method for ECG compression, by imaging the record as a 2D array and implementing a transform lossy compression strategy, is advanced. The particularity of the proposed transformation consists in applying a Discrete Wavelet Transform along one of the dimensions and the Discrete Cosine Transform along the other dimension. The performance of the method is demonstrated on the MIT-BIH Arrhythmia database. Significant improvements upon the 1D version of the codec, and on benchmarks for 2D ECG compression, are achieved.
MATLAB software for implementing the codec has been made available on http://www.nonlinear-approx.info/examples/node014.html