Research on fast inter-frame mode decision algorithm for H.264/AVC
Junjie Ma · Computer Engineering and Applications Journal · 2009
H.264/AVC standard employs variable block size Motion Estimation(ME) and Rate Distortion Optimization(RDO) technique in inter-frame mode decision to enhance coding efficiency,but it increases computational complexity drastically.In order to resolve this problem,a fast inter-frame mode decision algorithm is proposed by making use of the adoption information of SKIP mode in sequences and high correlation of coding modes between spatio-temporal adjacent macroblocks and current macroblock.The proposed algorithm reduces the range of candidate modes and uses thresholds to heighten precision of prediction.Simulation results demonstrate that the proposed algorithm can reduce calculation complexity significantly,with negligible small picture quality degradation and slight bitrate increase.