  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.
