AN EFFICIENT MOTION VECTOR REFINEMENT FOR THE TRANSCODER
Dong-Wan Seo, Yoonsik Choe · ITC-CSCC :International Technical Conference on Circuits Systems, Computers and Communications · 2005
In this paper, we propose an efficient motion refinement algorithm for the transcoder. The proposed algorithm sets the search range for the motion refinement based on the accuracy of the output motion vectors. The proposed algorithm chooses two candidate motion vectors from the decoded incoming motion vectors. It determines the type of the search range by the evaluated correctness of the candidate motion vectors. According to the type, we efficiently set the search range for the motion refinement. Experimental results show that the proposed algorithm has almost same PSNR with an average 50% reduced search point compared with the constant search range of ±2.