| 在频域内做运动补偿的改进公式及其计算复杂度分析 |
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| 引用本文： | 赵秉骥,朱维乐.在频域内做运动补偿的改进公式及其计算复杂度分析[J].信号处理,1999(4). |
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| 作者姓名： | 赵秉骥 朱维乐 |
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| 作者单位： | 电子科技大学电子工程学院 |
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| 摘 要： | 本文改进了文献［１］中给出的在ＤＣＴ域做运动补偿的计算公式，代之以漂亮的分块矩阵形式，并找出了两分块矩阵之间存在的关系，使用新的公式及得到的关系可以将运算复杂度从每计算一个ＤＣＴ系数需２５６次乘法及１９２次加法［１］减至少于５６次乘法及９３次加法．实验结果表明，使用这一公式重建的ＤＣＴ系数和使用常规ＭＰＥＧ－２解码器恢复的空域图象再做ＤＣＴ变换得到的系数是完全一致的。
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| 关 键 词： | 运动补偿 锚帧 频域 |
Modified Formula for Motion Compensation in Frequency Domain and Its Computational Complexity Analysis |
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| Zhao Chengji Zhu Weile.Modified Formula for Motion Compensation in Frequency Domain and Its Computational Complexity Analysis[J].Signal Processing,1999(4). |
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| Authors: | Zhao Chengji Zhu Weile |
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| Affiliation: | Zhao Chengji Zhu Weile |
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| Abstract: | In this paper, a set of modified formulae in matrix form for motion compensation in frequency domain is presented lusted of the formulae in referece1]. By using these flew formulae, the computational complexity is greatly greatly reduced from 256 multiplictions and 192 addition per pixel to less than 56 multiplications and 93 additions per pixel. Simulation shows that the reconstructed DCT coefficients is the same as the DCT coefficients which is reconstructed by using the conventional MPEG-2 decoder. |
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| Keywords: | Motion compensation Anchor frame Frequency domain |
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