A low complexity motion compensated frame interpolation method
A low complexity motion compensated frame interpolation method
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DOI：
10.1109/iscas.2005.1465738
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发表时间：
2005-05
期刊：
影响因子：
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通讯作者：
J. Zhai;Keman Yu;Jiang Li;Shipeng Li
中科院分区：
文献类型：
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作者：
J. Zhai;Keman Yu;Jiang Li;Shipeng Li
在低比特率视频通信中，由于可用带宽有限，通常采用时序子采样。运动补偿帧插值（MCFI）技术通常用于解码器中，以恢复原始帧率和提高时间质量。本文提出了一种低复杂度、高效率的MCFI方法。首先对嵌入在比特流中的运动矢量进行检测，然后对嵌入运动矢量不够精确的块进行重叠块双向运动估计。最后，利用运动矢量后处理和重叠块运动补偿生成插值帧，进一步减少块伪影。实验结果表明，该算法在PSNR和视觉性能上均优于其他方法，且复杂度也低于其他方法。
In low bit-rate video communication, temporal subsampling is usually used due to limited available bandwidth. Motion compensated frame interpolation (MCFI) techniques are often employed in the decoder to restore the original frame rate and enhance the temporal quality. In this paper, we propose a low-complexity and high efficiency MCFI method. It first examines the motion vectors embedded in the bit-stream, then carries out overlapped block bi-directional motion estimation on those blocks whose embedded motion vectors are regarded as not accurate enough. Finally, it utilizes motion vector post-processing and overlapped block motion compensation to generate interpolated frames and further reduce blocking artifacts. Experimental results show that the proposed algorithm outperforms other methods in both PSNR and visual performance, while its complexity is also lower than other methods.