Research and Optimization of Low-Complexity Motion Estimation Method Based on Visual Perception
Pengyu Liu, Kebin Jia · J. Inf. Hiding Multim. Signal Process. · 2011
H.264/AVC was the outstanding and signicant video compression standard developed by ITU-T/ISO/IEC Joint Video Team. It achieved excellent encoding perfor- mance of at the cost of increased computational complexity and falling encoding speed. In order to overcome poor real-time encoding performance of the important and time consuming motion estimation technology in H.264/AVC standard, aiming at computing redundancy of UMHexagonS algorithm which was selected by H.264/AVC latterly, with special considerations on visual perception, using macro-block's motion characteristics, formulated the adaptive motion estimation strategies and search points distribution rule. A low-complexity motion estimation scheme is proposed in this paper to improve the video coding performance signicantly. The simulation results show that the proposed motion estimation scheme achieve reduction of 23.11on average compared with UMHexagonS algorithm, in the premise of eectively improving the encoding speed, keep the low bit rate and high quality of encoding advantage for H.264/AVC compared with full search algorithm.