Comparative investigation of a non-linear predictive codec versus JPEG lossless compression

A non-linear predictive coding based algorithm is proposed for lossless image compression. The algorithm uses two neighbouring pixels, one left and the other top, as a pioneering block to search for the best matched blocks inside a pre-defined window. The corresponding pixels associated with the best matched blocks are then taken to produce the predictive value, together with the two pioneering pixels. Comparative investigation is carried out by experiments which show clearly that the proposed algorithm outperform JPEG lossless compression mode