| 引用本文: | 杜列波,肖学敏,罗武胜,等.JPEG2000遥感图像实时压缩系统中基于并行机制的“零时间”数据搬移策略.[J].国防科技大学学报,2008,30(4):88-93.[点击复制] |
| DU Liebo,XIAO Xuemin,LUO Wusheng,et al.No-time Spending Data Moving Strategy Based on Parallel Mechanism in JPEG2000 Remote Sensing Image Real-time Compression System[J].Journal of National University of Defense Technology,2008,30(4):88-93[点击复制] |
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| JPEG2000遥感图像实时压缩系统中基于并行机制的“零时间”数据搬移策略 |
| 杜列波, 肖学敏, 罗武胜, 魏鹏 |
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(国防科技大学 机电工程与自动化学院，湖南 长沙 410073)
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| 摘要: |
| 为了满足JPEG2000遥感图像实时压缩设备的实时性要求，提出了一种基于并行机制的“零时间”数据搬移策略。通过对EBC算法结构进行拆分，并采用EDMA方式进行数据搬移，使得算法运算与数据搬移过程完全并行，搬移时间等效为零。实验结果表明，采用新的数据搬移策略后，编码效率可以提升到100％，EBC算法实现的总时间可缩短46％以上。该搬移机制已成功应用于JPEG2000星载遥感图像实时压缩系统中，系统的实时性达到了设计要求。 |
| 关键词: 数据搬移 并行实现 EBC算法 DSP |
| DOI： |
| 投稿日期：2008-03-11 |
| 基金项目:国家863高技术计划资助项目 |
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| No-time Spending Data Moving Strategy Based on Parallel Mechanism in JPEG2000 Remote Sensing Image Real-time Compression System |
| DU Liebo, XIAO Xuemin, LUO Wusheng, WEI Peng |
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(College of Mechatronics Engineering and Automation, National Univ. of Defense Technology, Changsha 410073，China)
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| Abstract: |
| To satisfy the real-time need of JPEG2000 satellite remote image compression system, a no-time spending data moving strategy based on parallel mechanism is proposed in this paper. It is implemented by splitting the EBC algorithm and adapting EDMA transport method, which parallels the operations of the algorithm and data moving. With the new data moving strategy, the coding efficiency can achieve one hundred percent and the total time for EBC algorithm implementation has been decreased by 46%. The new data moving strategy has been applied to satellite on-board JPEG2000 image real-time compression system successfully. |
| Keywords: data moving parallel implementation EBC algorithm DSP |
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