MEDICAL IMAGE WAVELET COMPRESSIONEFFECT OF DECOMPOSITION LEVEL

Today medical images are stored in PACS and the future being Cloud storage. Be it PACS or Cloud the cost per GB storage is very high. Compression is predominantly the only solution to reduce the size. Among the several compression methods, wavelet based compression method is popular due to their multiresolution property. For automatic compression of medical images using wavelets it is very much important to find the optimum algorithm, wavelet, encoding loop and decomposition level. In this paper wavelet based SPIHT algorithm in combination with bior4.4, Haar and Daubechies are used to study the effects of decomposition level. Decomposition level 3 may be chosen as the optimum decomposition level.