Efficient Techniques for Signalling Intra Prediction Modes of H.264/Mpeg-4 Part 10

Enhanced intra and inter prediction techniques are the key factors to the success of H.264. There are a total of nine optional prediction modes for each 4 times 4 luma block. The choice of intra prediction mode for each 4 times 4 block must be signalled to the decoder and this could potentially require a large number of bits. However, intra modes for neighbouring 4 times 4 blocks are often correlated. To take advantage of this correlation, predictive coding is used to signal 4 times 4 intra modes. At the boundaries of frame, we can´t apply all modes because of limitation of available pixels for prediction. Now question arises, is it feasible to use same technique to signal less number of modes as for nine modes? In this paper we used techniques different than the given technique for nine modes, experimental results show that the proposed methods are more efficient than the existing one