The Enhanced Intra Prediction Algorithm for H.264

When the current block is at the edge of the objects, the prediction accuracy of H.264 intra-frame coding will be decreased. An enhanced intra prediction method is proposed in this paper based on the directional of intra prediction and correlation among adjacent pixels in the current block. The proposed algorithm use the pixels calculated already as the reference pixels to predict the rest pixels in the current block, and then dynamically update the prediction mode order to achieve more most_probable_modes. Experimental results show that the proposed scheme is able to achieve a remarkable reduction of bit rate, meanwhile the peak signal-noise ratio (PSNR) is slightly increased compared with the original H.264 reference software.