Adaptive predictive multiplicative autoregressive model for medical image compression

In this paper, an adaptive predictive multiplicative autoregressive (APMAR) method is proposed for lossless medical image coding. The adaptive predict or is used for improving the prediction accuracy of encoded image blocks in our proposed method. Each block is first adaptively predicted by one of th e seven predictors of the JPEG lossless mode and a local mean predictor. It is clear that the prediction accuracy of an adaptive predictor is better t han that of a fixed predictor. Then the residual values are processed by th e MAR model with Huffman coding. Comparisons with other methods [MAR, SMAR, adaptive JPEG (AJPEG)] on a series of test images show that our method is suitable for reversible medical image compression.