Image compression using hybrid of DWT, DCT, DPCM and Huffman Coding Technique
Ramakant Katiyar, Akhilesh Kosta · 2014
In present scenario, among researchers development of hybrid schemes for an effective image compression has enhance to an enormous popularity. This research paper gives a recommended plan for medical image compression build on hybrid image compression proficiency (DWT and DCT).The objective for the wavelet coefficients of every DWT band(HH and LL) is to gain a hike on compression rates by exercising various compression thresholds whereas for maintaining the quality of reconstructed medical image DCT transfigure is applied. Based on the type of transformation the retained coefficients are calculated by the help of adaptive calculation. Finally for encrypting the calculation indices the entropy coding is used. Experimental consequences presents that the coding performance can be notably improved by the hybrid DWT-DCT algorithm.