Performance analysis of ECG data compression using wavelet based hybrid transform method

Efficient compression and transmission of electrocardiogram (ECG) data is a prime concern to monitor a heart patient´s health from rural areas. Research has been carried out for this from last several decades to present. There are many algorithms which have been developed for this and it plays a vital role for telemedicine applications. This paper presents a compression performance analysis based on hybrid transform methods which provide higher compression ratio than single stage transform method. To implement hybrid transform method, combinations of two transforms have been used. Fast Fourier transform, discrete sine transform and discrete cosine transform have been used at transform 1 stage whereas discrete wavelet transform has been used at transform2 stage.