| 基于OpenMP的AVS并行编码算法研究与实现 |
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| 引用本文： | 胡文安,于鸿洋.基于OpenMP的AVS并行编码算法研究与实现[J].计算机工程与设计,2010,31(10). |
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| 作者姓名： | 胡文安 于鸿洋 |
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| 作者单位： | 电子科技大学,电子工程学院,四川,成都,611731 |
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| 摘 要： | 为了提高新一代音视频编解码技术标准AVS的编码速度,利用OpenMP在多核处理器平台上研究并实现了AVS的GOP级、条带级,帧级和基于任务队列模型的帧级并行编码算法.对CIF格式的视频序列进行了测试,在四核处理器平台上加速比最高能达到3.82x.另外,基于任务队列模型的帧级并行算法在保持图像质量不变的基础上解决了帧级并行算法加速比偏低的缺点.实验结果表明,OpenMP是一种简单而有效的并行化编程工具,基于OpenMP的各个AVS并行编码算法与原串行算法相比,编码速度都有显著提高.
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| 关 键 词： | 信息技术先进音视频编码 多核处理器 并行编码 加速比 |
Realization and research on parallel encoding algorithm for AVS based on OpenMP |
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| HU Wen-an,YU Hong-yang.Realization and research on parallel encoding algorithm for AVS based on OpenMP[J].Computer Engineering and Design,2010,31(10). |
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| Authors: | HU Wen-an YU Hong-yang |
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| Affiliation: | HU Wen-an,YU Hong-yang(College of Electronic Engineering,University of Electronic Science , Technology of China,Chengdu 611731,China) |
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| Abstract: | To increase the encoding speed of AVS,the parallel encoding algorithms including GOP-level,slice-level,simple frame-level and frame-level based on task queuing model are researched and realized,based on OpenMP and multi-core processors.CIF format sequences are tested and speedup can obtain 3.82 on a four-core processor system.In addition,the algorithm of frame-level based on task queuing model solves the problem of low speedup in simple frame-level algorithm and maintain the same image quality.The experimen... |
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| Keywords: | OpenMP |
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