SSIP '09/MIV'09 Proceedings of the 9th WSEAS international conference on signal, speech and image processing, and 9th WSEAS international conference on Multimedia, internet & video technologies
Hi-index | 0.00 |
An improved image compression scheme using AC coefficient prediction of Hadamard Transform is presented in this paper. In the prediction phase, information of the nearest neighbor dc values of Hadamard Tranform blocks is utilized to predict the center block AC coefficients. Linear programming based optimization technique is used to predict the AC coefficients. Results indicate that this method is superior in terms of improving peak signal to noise ratio (PSNR) and minimizing blocking artifacts .