A Fast Coding Algorithm for H.264/AVC Based on Best Intermode Decision and Early-terminated Strategies

According to the distribution of the best inter coding modes,we give three early-terminated strategies for deciding whether one of the SKIP,P16×16,P16×8 or P8×16 can be selected as the best inter coding mode.If the conditions can be satisfied,the computation of RD cost of the rest mode can be saved.Experimental results show that the proposed algorithm can save about 50% to 70% time compared with a full-searching algorithm in H.264/AVC,meanwhile the decreasing of PSNR is about 0.17dB and the increas of bit-rate is about 2.42%.