Mri Image Compression Using Biorthogonal Cdf Wavelet Based on Lifting Scheme and Spiht Coding

In the field of medical diagnostics, interested parties have resorted increasingly to medical imaging, it is well established that the accuracy and completeness of diagnosis are initially connected with the image quality, but the quality of the image is itself dependent on a number of factors including primarily the processing that an image must undergo to enhance its quality. We introduce in this paper an algorithm for medical image compression based on biorthogonal wavelet transform CDF 9/7 coupled with SPIHT coding algorithm, of which we applied the lifting structure to improve the drawbacks of wavelet transform. In order to enhance the compression by our algorithm, we have compared the results obtained with wavelet based filters bank. The results are very satisfactory regarding compression ratio, and the computation time and quality of the compressed image compared to those of traditional methods.