Adaptive fast search algorithm for block motion estimation in H.264
Dongbo Zhang · Computer Engineering and Applications Journal · 2013
Motion estimation is an important issue in H.264 video coding systems because it occupies a large amount of encoding time.So the quality of motion search algorithm affects the entire encoding efficiency directly.A novel search algorithm which utilizes an adaptive hexagon and small diamond search is proposed to enhance search efficiency.The adaptive search pattern is chosen according to the motion strength of the current block.When the block is in active motion,the hexagon search provides an efficient search means;when the block is inactive,the small diamond search is adopted.Simulation results show that this approach can speed up the search process with little effect on distortion performance compared with other adaptive approaches.