A novel context modeling scheme for motion vectors context-based arithmetic coding

A new context modelling scheme for arithmetic coding of motion vectors (MVs) is proposed. The model uses the correlation between the horizontal and vertical components of the MVs to improve the probability estimation of symbols. The accurate probability estimation can therefore improve the efficiency of the context-based arithmetic coder. The proposed scheme has been adapted to the H.264 advanced video codec and the simulation results show that a considerable bit rate saving can be achieved in MV coding.