| 一种基于新阈值的视频编码全零块提早判决方法 |
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| 引用本文： | 钟国韵,何小海,吴笛,滕奇志.一种基于新阈值的视频编码全零块提早判决方法[J].东南大学学报,2011(3):248-252. |
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| 作者姓名： | 钟国韵 何小海 吴笛 滕奇志 |
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| 作者单位： | 四川大学电子信息学院;东华理工大学信息与工程学院; |
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| 基金项目： | The EU Seventh Framework Programme FP7-PEOPLE-IRSES( No. 247083) |
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| 摘 要： | 为了降低计算复杂度和编码时间,提出了一种改进的H.264/AVC全零块提早判决方法.首先,介绍了已有的全零块判决算法,分析了3种变换后将量化为零的频域系数,并在3种不同频域伸缩因子的基础上推导出对应的空域系数.然后,根据这些空域系数,并应用Schwarz不等式原理,设定了3个全零块判决阈值,并根据全零块空域系数的分布情...
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| 关 键 词： | 全零块 视频编码 阈值 |
Early all-zero blocks detecting method for video coding based on novel threshold |
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| Zhong Guoyun, He Xiaohai Wu Di Teng Qizhi.Early all-zero blocks detecting method for video coding based on novel threshold[J].Journal of Southeast University(English Edition),2011(3):248-252. |
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| Authors: | Zhong Guoyun He Xiaohai Wu Di Teng Qizhi |
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| Institution: | Zhong Guoyun1,2 He Xiaohai1 Wu Di1 Teng Qizhi1(1School of Electronics and Information Engineering,Sichuan University,Chengdu 610065,China)(2College of Information Engineering,East China Institute of Technology,Fuzhou 344000,China) |
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| Abstract: | In order to decrease both computational complexity and coding time,an improved algorithm for the early detection of all-zero blocks(AZBs) in H.264/AVC is proposed.The previous AZBs detection algorithms are reviewed.Three types of transformed frequency-domain coefficients,which are quantized to zeros,are analyzed.Based on the three types of frequency-domain scaling factors,the corresponding spatial coefficients are derived.Then the Schwarz inequality is applied to the derivation of the three thresholds based... |
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| Keywords: | all-zero block video coding threshold |
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