Compression Techniques for ECG Signal: A Review

The most recent improvement of biomedical signal processing, information technology and communication has brought a new measurement to the medical world. It is now possible to record an ECG signal with a convenient electrocardiograph trivial and able to convert a micro-computer in electrocardiograph with the possibility of a diagnostic aid for automatic analysis. At the present changing from a paper-based patient verification to a digital one. Electrocardiogram (ECG) is the procedure of recording the electrical motion of the heart over a period of time using electrodes placed on a patient's body. The signal composed from the body wants to be processed and compressed before sending to monitoring center. ECG data compression reduced the storage necessities to build up a more efficient tele-cardiology system for cardiac analysis and diagnosis. This paper presents a study of different compression techniques for ECG data compression and comparison of different ECG compression techniques like TURNING POINT, AZTEC, CORTES, FFT and DCT it was initiate that DCT is the best appropriate compression technique with compression ratio of about 100:1.