# Mixed-transform based codec for 2D compression of ECG signals

## TL;DR

This paper introduces a novel 2D ECG compression method using a mixed transform approach combining Discrete Wavelet and Discrete Cosine Transforms, demonstrating significant performance improvements over existing methods.

## Contribution

The paper presents a new 2D ECG compression technique that applies a mixed transform strategy, improving compression efficiency over previous 1D and benchmark methods.

## Key findings

- Significant performance improvements over 1D ECG codecs.
- Effective compression demonstrated on MIT-BIH Arrhythmia database.
- Outperforms existing benchmarks for 2D ECG compression.

## 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.