135-MHz 258-K gates VLSI design for all-intra H.264/AVC scalable video encoder
IEEE Transactions on Very Large Scale Integration (VLSI) Systems
| Hi-index | 0.00 |
H.264/AVC video coding uses the intra prediction scheme to compress the spatial redundancy. The main goal of the intra prediction is to achieve a better compression efficiency. For finding the optimal prediction modes, H.264/AVC adopts the full search algorithm in the standard. The high computation complexity of the full search algorithm makes the encoding of H.264/AVC to be difficult to meet real time applications. In this work, we propose a fast intra prediction mode decision algorithm for 4脳4 intra blocks, which is based on the partially sampling prediction and symmetry of the adjacent angle modes, to reduce the computational complexity of the 4脳4 block intra-prediction. Experimental results show that the proposed algorithm can reduce the computation time of the intra prediction by more than 60% while maintaining similar video quality and bit rate.