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一种运动自适应的帧速率上转换算法

DOI: 10.11834/jig.20090518

Keywords: 帧速率上转换,变尺寸块,STGS图,运动矢量细化,运动估计,运动补偿

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Abstract:

在基于块的帧速率上转换算法中,块尺寸直接影响运动估计的准确性及插值帧的视觉效果。为此,提出了一种运动自适应的帧速率上转换算法。通过引入STGS图对视频内容进行预分析,根据运动特性自适应选取适合每一帧图像的块尺寸,进行重叠的块运动估计。并针对失真易产生在块边缘的特点,对块边缘的运动矢量进行插值细化处理,平滑运动矢量场,减轻人眼敏感的块效应。实验结果表明,该算法整体性能优于传统的固定块尺寸运动估计的帧速率上转换算法。

References

[1]  Joint Video Team (JVT)of ISO/IEC MPEG & ITU-T VCEG. Draft ITU_T Recommendation and Final Draft International Standard of JointVideo Specification[S]. JVT-G050r1, 2003.
[2]  Lagendijk R L, Sezan, M I. Motion compensated frame rate conversion of motion pictures [ A ]. In: Proceedings of the IEEE International Conference on Acoustics, Speech, and Signal Processing [C] , San Francisco, CA, USA, 1992:453-456
[3]  Bierling M, Thoma R. Motion compensating field interpolation using a hierarchically structured displacement estimation [J]. Signal Processing, 1986, 11(4) : 387-404.
[4]  Haan D G, Biezen P W A C, Huijgen H, et al. True-motion estimation with 3-D recursive search block matching[J]. IEEE Transactions on Circuits and Systems for Video Technology, 1993, 3(5) : 368-379.
[5]  Pelagotti A, Haan D G. A new high quality algorithm for video format up-conversion[ A ]. In: Proceedings of the International Conference on Image Processing[C] , Thessaloniki, Greece, 2001 : 375-378.
[6]  Hilman K, Park H W, Kim Y. Using motion-compensated frame-rate conversion for the correction of 3 : 2 pulldown artifacts in video sequences [J]. IEEE Transactions on Circuits and Systems for Video Technology, 2000, 10(6): 869-877.
[7]  Taebyeun Ha, Lee S, Kim J. Motion compensated frame interpolation by new block-based motion estimation algorithm[J]. IEEE Transactions on Consumer Electronics, 2004, 50 (2) : 752-759.
[8]  Lee S H, Kwon O, Park R H. Weighted-adaptive motion compensated frame rate up-conversion [J]. IEEE Transactions on Consumer Electronics, 2003, 49(3): 485-495.
[9]  Han S C, Woods J W. Frame-rate up-conversion using transmitted motion and segmentation fields for very low bit-rate video coding[ A ]. In: Proceedings of IEEE International Conference on Image Processing[C], Washington, DC, USA, 1997: 747-750.
[10]  Fujiwara S, Taguchi A. Motion-compensated frame rate up-conversion based on block matching algorithm with multi-size blocks [ A ]. In: Proceedings of 2005 International Symposium on Intelligent Signal Processing and Communication Systems [C] , Hong Kong, China, 2005, 353-356.
[11]  Qi W, Zhang H J, Zhong Y Z. A pre-analysis method for robust global motion estimation [ A ]. In : Proceedings of IEEE International Conference on Image Processing [C], Kobe, Japan, 1999, 2:625-628.

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