| 嵌入式零树小波压缩和解压缩的并行化算法 |
| |
| 引用本文： | 韩丽洁,李文,田晏嘉.嵌入式零树小波压缩和解压缩的并行化算法[J].计算机应用,2009,29(Z1). |
| |
| 作者姓名： | 韩丽洁 李文 田晏嘉 |
| |
| 作者单位： | 内蒙古大学,计算机学院,呼和浩特,010021 |
| |
| 基金项目： | 国家自然科学基金，内蒙古大学513人才计划科研项目，内蒙古大学自然科学基金 |
| |
| 摘 要： | 嵌入式零树小波压缩算法是图像压缩技术中有效的压缩算法,但其压缩时间较长.对该算法进行了研究,并在多核机群系统下实现了该算法的并行算法,提高了算法的性能.实现了MPI和MPI+OpenMP两种并行算法,并将串行算法、MPI并行算法与MPI+OpenMP并行算法进行比较.结果显示,随着数据量的增多,MPI并行算法和MPI+OpenMP并行算法相对于串行算法的运行效率都有明显提高,其中MPI+OpenMP并行算法的效率更好.
|
| 关 键 词： | 嵌入式零树小波编码 |
Parallel algorithm for image copression and decompression based on EZW |
| |
| HAN Li-jie,LI Wen,TIAN Yan-jia.Parallel algorithm for image copression and decompression based on EZW[J].journal of Computer Applications,2009,29(Z1). |
| |
| Authors: | HAN Li-jie LI Wen TIAN Yan-jia |
| |
| Affiliation: | College of Computer Science;Inner Mongolia University;Huhhot Nei Mongol 010021;China |
| |
| Abstract: | Embedded Zerotree Wavelet(EZW) is an effective algorithm for image compression.However,image compression is a time-consuming process.The parallel algorithm of EZW was implemented for improving performance on multi-core cluster.The parallel algorithm using MPI and MPI+OpenMP was developed.Comparision of serial algorithm and parallel algorithms shows that the efficiency of two parallel algorithms has been enhanced obviously with input data increasing.Furthermore,the algorithm using MPI+OpenMP is more effectiv... |
| |
| Keywords: | MPI MPI OpenMP |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
