Lossless compression of video sequences

In this paper we investigate lossless compression schemes for video sequences A simple adaptive prediction scheme is presented that exploits temporal correlations or spectral correlations in addition to spatial correlations It is seen that even with motion compensation schemes that utilize only temporal correlations do not perform signif icantly better than schemes that utilize only spectral correlations Hence we look at hybrids scheme that make use of both spectral and temporal correlations The hybrid schemes give signi cant improvement in performance over other techniques Besides prediction schemes we also look at some simple error modeling techniques that take into account prediction errors made in spectrally and or temporally adjacent pixels in order to e ciently encode the prediction residual Implementation results on standard test sequences indicate that signi cant improvements can be obtained by the proposed techniques