| H.264中基于全零块的编码模式快速选择 |
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| 引用本文： | 周韬,刘少华,熊志辉,张茂军. H.264中基于全零块的编码模式快速选择[J]. 计算机工程与设计, 2007, 28(14): 3401-3403,3425 |
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| 作者姓名： | 周韬 刘少华 熊志辉 张茂军 |
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| 作者单位： | 国防科技大学,信息系统与管理学院,湖南,长沙,410073;国防科技大学,信息系统与管理学院,湖南,长沙,410073;国防科技大学,信息系统与管理学院,湖南,长沙,410073;国防科技大学,信息系统与管理学院,湖南,长沙,410073 |
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| 摘 要： | 多种宏块编码模式的采用是H.264/AVC的显著特点,却也带来了极大的计算量.根据H.264/AVC中整数DCT变换和量化的特点,提出了一个新的预先判定全零块的阈值,并进一步将全零块的预先判定用于多种宏块编码模式的快速选择中,减少了运动估计的搜索复杂度.利用这种方法,可以在保证图像质量和比特率基本不变的情况下,有效减少编码器的计算复杂性.
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| 关 键 词： | 视频编码 离散余弦变换 量化 全零块 编码模式 |
| 文章编号： | 1000-7024（2007）14-3401-03 |
| 修稿时间： | 2006-12-25 |
Fast selection from macro-block encoding modes based on all-zero blocks predetermination in H.264/AVC |
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| ZHOU Tao,LIU Shao-hua,XIONG Zhi-hui,ZHANG Mao-jun. Fast selection from macro-block encoding modes based on all-zero blocks predetermination in H.264/AVC[J]. Computer Engineering and Design, 2007, 28(14): 3401-3403,3425 |
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| Authors: | ZHOU Tao LIU Shao-hua XIONG Zhi-hui ZHANG Mao-jun |
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| Affiliation: | College of Information Systems and Management, National University of Defense Technology, Changsha 410073, China |
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| Abstract: | The usage of various macro-block encoding modes is remarkable characteristic of H.264/AVC,however,it is acquired by heavily computation.According to the characteristics of H.264/AVC integral DCT transform and quantization,a new threshold for pre-determination of all-zero blocks is presented.Then it is further applied to the fast selection from various macro-block encoding modes,which reduce the search complexity of motion estimation.In short,this method will effectively reduce the computing complexity of video encoder while remaining bit-rate and video quality almost unchanged. |
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| Keywords: | video encoding discrete cosine transform quantization all-zero blocks encoding modes |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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