Adaptive Search Range Decision and Enhanced AMVP Mechanism for HEVC Coder

• Main Authors: Chiao-MinHuang, 黃巧旻
• Other Authors: Jar-Ferr Yang
• Format: Others
• Language: en_US
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/62161183685931843639

碩士 === 國立成功大學 === 電腦與通信工程研究所 === 101 === This paper presents an adaptive search range (SR) selection algorithm in fast motion estimation. Since a good decision may achieve excellent coding performance with reduced memory access bandwidth, a proper SR size is important to video encoding. To attain this goal, we first obtain a motion vector predictor (MVP) is got from the motion vectors (MVs) of spatially and temporally neighboring blocks. Due to the accuracy of the MVP, we will find the best matching image block faster in the full search. By exploiting the relationship between the motion difference (MD), the MVP and the MV, we develop an adaptive SR selection algorithm. In addition, we further improve by combining SAD-based early termination algorithm. Experimental results show that the performance of the proposed algorithm is very similar to that of the full search algorithm it enables significant reduction in the computational complexity.