Fast mode decision for H.264 intra prediction with prediction samples easy to generate

This paper presents a fast mode decision algorithm its hardware structure for H.264/AVC intra prediction. For x4 luma blocks, the algorithm uses only 8 prediction samples to the number of possible prediction modes from 9 to 4.The prediction samples are easier to generate than original samples used in the H.264/AVC intra prediction. of the 8 prediction samples are close to the values of the prediction samples. For 16x16 luma and chroma blocks, algorithm uses directions of each mode and it reduces the of possible prediction modes from 4 to 2. Overall, the reduces the number of possible prediction modes from to 8. Experimental results show that the algorithm has less of peak signal-to-noise ratio than those of existing. The hardware structure for the algorithm reduces computation time by performing the intra prediction for 4x4 blocks and the intra prediction for 16x16 luma blocks and blocks in parallel.