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一种基于精确度的降分辨率视频转码运动矢量合成算法

DOI: 10.11834/jig.20100102

Keywords: 降分辨率转码,运动矢量合成,精确度,绝对差值和,率失真函数

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Abstract:

针对现有的降分辨率视频转码运动矢量合成算法没有考虑输入运动矢量的精确度,从而使得合成误差较高的问题,提出了一种基于精确度的降分辨率视频转码运动矢量合成算法。该算法分为两次合成,首先基于绝对差值和(SAD)对转码输入流中的运动矢量进行平均合成,然后再基于率失真函数,对转码输出流中的相邻运动矢量和第1次合成得到的运动矢量进行选择合成。仿真结果表明,与现有算法相比,该算法在保持较低计算复杂度的情况下,显著降低了运动矢量合成的误差。

References

[1]  Ahmad Ishfaq,Wei Xiao-hui,Sun Yu,Video transcoding:An overview of various techniques and research issues,IEEE Transactions on Multimedia,2005(5).
[2]  Xin Jun,Sun Ming-ting,Choi Byung-sun,An HDTV-to-SDTV spatial transcoder,IEEE Transactions on Circuits and Systems for Video Technology,2002(1).
[3]  Tan Yap-peng,Sun Hai-wei,Fast motion re-estimation for arbitrary downsizing video transcoding using H.264AVC standard,IEEE Transactions on Consumer Electronics,2004(3).
[4]  Wang Jiao,Yang En-hui,Yu Xiang,An efficient motion estimation method for H.264-based video transcoding with spatial resolution conversion,Piscata,NJ,USA:IEEE Computer Society,2007.
[5]  Xin Jun,Lin Chia-wen,Sun Ming-ting,Digital video transcoding,Proceedings of the IEEE,2005(1).
[6]  Kumar Rajeev,Patil Vasant,An efficient motion vector composition scheme for arbitrary frame down-sampling video transcoder,IEEE Transactions on Circuits and Systems for Video Technology,2006(9).
[7]  Liang Yong-qing,Chau Lap-pui,Tan Yap-peng,Arbitrary downsizing video transcoding using fast motion vector reestimation,IEEE Signal Processing Letters,2002(11).
[8]  Tan Yap-peng,Liang Yong-qing,Sun Hai-wei,On the methods and performances of rational downsizing video transcoding,Signal Process:Image Communication,2004(1).

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