| 基于模式分组的帧内预测模式快速选择算法 |
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| 引用本文： | 谢晓燕,王欢.基于模式分组的帧内预测模式快速选择算法[J].电视技术,2015,39(22):1-5. |
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| 作者姓名： | 谢晓燕 王欢 |
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| 作者单位： | 西安邮电大学 计算机学院,西安邮电大学 计算机学院 |
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| 基金项目： | 国家自然科学基金面上项目“三维视频处理系统芯片动态可重构可编程体系结构研究”(61272120)、陕西省自然科学基础研究计划项目“面向下一代视频标准的阵列处理器体系结构关键技术研究”(2013JC2-32)。 |
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| 摘 要： | 针对高效率视频编码(HEVC)帧内预测中增加的预测模式引起的的粗选择模式(RMD)与率失真优化(RDO)算法计算复杂度高的问题。本文充分利用候选模式集中排列第一的预测模式与最优预测模式之间的强相关性,提出了一种基于模式分组的帧内预测模式快速选择算法,有效的降低了HEVC帧内预测算法的计算复杂度。实验表明本文所提出的算法与HEVC的测试模型HM10.0相比,在保证视频质量和码率基本不变的前提下(码率仅增加了0.78%,Y-PSNR只降低了0.12dB),减少了41.8％的编码时间,提高了编码效率。
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| 关 键 词： | HEVC 帧内预测 预测模式 模式分组 |
| 收稿时间： | 2015/4/17 0:00:00 |
| 修稿时间： | 6/9/2015 12:00:00 AM |
A fast selection algorithm based on mode groupingfor intra prediction mode |
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| Xie Xiao-yan and Wang Huan.A fast selection algorithm based on mode groupingfor intra prediction mode[J].Tv Engineering,2015,39(22):1-5. |
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| Authors: | Xie Xiao-yan and Wang Huan |
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| Abstract: | To further reduce the high computational complexity of rough mode decision (RMD) and rate distortion optimization (RDO) resulting from the increasing prediction modes in High Efficiency Video Coding ( HEVC) intra prediction,a fast selection algorithm based on mode grouping for intra prediction mode was proposed in this paper. Making use of the strong correlation between the first rank prediction mode in the candidate mode centralized arrangement and the optimal prediction mode,and then reduce the computational complexity. The experimental results show that, compared with HEVC HM10.0 testing models, the proposed algorithm can save an average 41.8% of encoding time with negligible loss of coding efficiency (only 0.78% bitrate increasing, and 0.12 dB Y-PSNR(Y-Peak Signal-to-Noise Ratio) loss), promote the coding efficiency. |
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| Keywords: | HEVC intra prediction prediction mode mode grouping |
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