A novel criterion for block matching motion estimation

摘要

In very-low-bit-rate coding, the amount of bits needed to encode motion vectors (MV) also takes an important portion of the coded bit stream. A novel criterion for block matching motion estimation is presented in this paper, which gives a good balance between the motion compensation and motion vector length. Compared to the widely used SAD (sum of absolute difference)/MSE (mean square error)-only criterion in block-based video coding systems, the modified SAD/MSE criterion can provide shorter coded bits in overall coding performance under constant image quality.