Motion vector coding using optimal predictor

In this paper, we propose a new motion vector coding scheme using optimal predictor. To improve coding performance of motion vector data, the proposed encoder selects an optimal predictive motion vector that produces minimum bits for the given motion vector. The proposed decoder estimates the optimal predictive motion vector without additional information from encoder for indicating which predictor is used. Experimental results show that the proposed scheme is very effective in reducing coded motion vector data since it achieves BDBR (Bjÿntegaard Delta Bit Rate) gain of about 4.46% on average compared to the KTA 2.0 software.