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国土资源遥感  2006, Vol. 18 Issue (2): 31-34    DOI: 10.6046/gtzyyg.2006.02.08
  技术方法 本期目录 | 过刊浏览 | 高级检索 |
无人机遥感数据压缩解压缩系统的设计和实现
秦其明,金川,陈德智,李杰
北京大学地球与空间科学学院遥感与GIS研究所,北京100871
THE DESIGN AND IMPLEMENTATION OF THE UNMANNED
AERIAL VEHICLES REMOTE SENSING DATA TRANSFER SYSTEM
 QIN Qi-Ming, JIN Chuan, CHEN De-Zhi, LI Jie
Institute of Remote Sensing and GIS, Peking University, Beijing 100871, China
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摘要 

无人机遥感数据压缩与解压缩系统是无人机数据传输链路中的重要组成部分。针对数据传输中的设计问题,本文分别给出了3种无人机航空遥感数据传输与压缩系统方案设计,阐述了数据压缩原理与实现方法,重点对有损压缩算法进行了研究。通过影像自适应分块,离散余弦变换(DCT)、量化及Huffman编码等实现了遥感影像的压缩程序。在此基础上,从软件结构和硬件体系两方面对压缩程序进行优化,实现了嵌入式遥感数据压缩系统的开发。无人机遥感系统实验表明: 遥感图像压缩系统运行正常,遥感图像数据压缩比达到1︰13。飞行实验中图像的实时显示也检验了无人机遥感图像解压缩程序的正确性和稳定性。

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Abstract

The unmanned aerial vehicles remote sensing data compression and decompression system (UAVRSDCDS) is a key component of the UAV aerial remote sensing data transfer system. Based on the design of the data transfer, this paper puts forward three aerial remote sensing data transfer and compression schemes. The principle and implementation of data compression are described, and the key techniques in the development of the embedded remote sensing data compression system are studied. The remote sensing image compression system was achieved through four key steps, i.e., automatic segmentation, DCT, quantification and Huffman coding. The compression system was realized and optimized in both hardware and software based on characteristics of DSP. The aerial remote sensing data compression system performed well in the flying experiment, and the compression ratio of remote sensing image could reach 1︰13. The flying experiment proved the correction and robustness of the system.

     出版日期: 2009-09-10
ZTFLH:  TP 274  
引用本文:   
秦其明, 金川, 陈德智, 李杰. 无人机遥感数据压缩解压缩系统的设计和实现[J]. 国土资源遥感, 2006, 18(2): 31-34.
QIN Qi-Ming, JIN Chuan, CHEN De-Zhi, LI Jie. THE DESIGN AND IMPLEMENTATION OF THE UNMANNED
AERIAL VEHICLES REMOTE SENSING DATA TRANSFER SYSTEM. REMOTE SENSING FOR LAND & RESOURCES, 2006, 18(2): 31-34.
链接本文:  
http://www.gtzyyg.com/CN/10.6046/gtzyyg.2006.02.08      或      http://www.gtzyyg.com/CN/Y2006/V18/I2/31
[1] 杜晓, 晋佩东, 郭大海, 王建超, 周英杰. 遥感影像快速入库和元数据提取系统的研究[J]. 国土资源遥感, 2006, 18(3): 80-84.
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