| 基于DSP与FPGA结构的星载图像压缩系统设计与实现 |
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| 引用本文： | 杨建伟,乔纯捷,杨俊,罗武胜.基于DSP与FPGA结构的星载图像压缩系统设计与实现[J].计算机测量与控制,2008,16(12):1960-1962. |
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| 作者姓名： | 杨建伟 乔纯捷 杨俊 罗武胜 |
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| 作者单位： | 国防科技大学机电工程与自动化学院,湖南,长沙,410073;国防科技大学机电工程与自动化学院,湖南,长沙,410073;国防科技大学机电工程与自动化学院,湖南,长沙,410073;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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| 基金项目： | 国家高技术研究发展计划(863计划)
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| 摘 要： | 针对空间遥感成像数据传输之前需对CCD图像进行压缩处理的要求,设计了一种基于多片DSP+FPGA结构的高效高速星载图像压缩系统,采用了双正交重叠变换的定点实现算法对图像进行压缩,只需少量的移位和加法运算,降低了算法的实现难度,并对编码进行了优化处理,适于DSP并行处理。应用结果表明,该系统运行稳定可靠,压缩效果良好,软硬件复杂度低,有很好的实用性和推广价值。
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| 关 键 词： | 遥感成像 图像压缩 双正交重叠变换 并行处理 |
Design and Implementation of Spaceborne Image Compression System Based on DSP+FPGA |
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| Yang Jianwei,Qiao Chunjie,Yang Jun,Luo Wusheng.Design and Implementation of Spaceborne Image Compression System Based on DSP+FPGA[J].Computer Measurement & Control,2008,16(12):1960-1962. |
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| Authors: | Yang Jianwei Qiao Chunjie Yang Jun Luo Wusheng |
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| Affiliation: | Yang Jianwei Qiao Chunjie Yang Jun Luo Wusheng College of Mechatronics and Automation,National University of Defense Technology,Changsha 410073,China |
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| Abstract: | An efficient spaceborne image compression system based on multi-DSP and FPGA was introduced in this paper.It was de- signed to meet the requirement of image compression in the space remote sensing imaging system before data transferring.The fixed-point lapped biorthogonal transform algorithm was adopted that can be implemented using only shift and add operations.Code optimizing was also considered to make the algorithm suitable for parallel processing in DSP.The application shows that this system runs stably and accurately. It has good compression effect and low implementation complexity.The technology and methods adopted in the system are practical and worthy of using abroad. |
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| Keywords: | remote sensing imaging image compression lapped biorthogonal transform parallel processing |
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