Context-based adaptive arithmetic codin for lossy plus lossless image compressioln

Lossy plus lossless (LPL) image compression technique provides an efficient way for searching an image data base and for transmitting images such as medical images where lossless compression is necessary. This paper presents a new method for the compression of the prediction error in the LPL technique. The new method is based on context modelling and adaptive arithmetic coding. Experiments show that the new method outperforms a previously published method in that it results in a better quality lossy reconstructed image and a smaller total bit rate.