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长春光学精密机械与物... [1]
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会议论文 [1]
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2010 [1]
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Optimization on motion estimation algorithm based on H. 264 (EI CONFERENCE)
会议论文
2010 3rd International Conference on Advanced Computer Theory and Engineering, ICACTE 2010, August 20, 2010 - August 22, 2010, Chengdu, China
Wen X.
;
Li G.
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提交时间:2013/03/25
Motion estimation is a very important part of video compression. As a result of using precision of motion vector in H.264 encoder
the computational cost increases rapidly
and motion estimation is the most time-consuming stage. In this paper
based on the UMHexagonS algorithm
an optimized algorithm is proposed based on the dynamic search window selection
big hexagon and small hexagon search mode respectively
which saves motion estimation time effectively with a little quality loss. Experiments with some typical video sequences show that compared to the original UMHexagonS algorithm
this new algorithm can save about 17.851 % motion estimation time and reduce the complexity of original scheme as well as enhance the real time performance of encoder and almost has no changes in the reconstructed picture quality and bitrates. 2010 IEEE.
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