New simple context-based predictive technique for lossless image compression

An efficient and simple context-based data modelling technique for lossless image compression is described in the paper. Similarly as preprocessing stage of JPEG-LS, it uses only 3 contexts, which makes it time-efficient, and does not force the message headers to be long. Enhanced, but more computationally complex versions of the method are also analyzed. Extensive experiments show that indeed, the new technique is clearly better from data compression point of view than the preprocessing stage of JPEG-LS, while its computational complexity is approximately the same.