可见/红外双波段航空遥感相机图像数据硬盘高速存储技术  

Image Data Hard Disk High-Speed Storage Technology of Visible/Infrared Dual-Band Aerial Remote Sensing Camera

作　　者：韩松伟[1,2] 孙丽娜[1,2] 孟中[1,2] 毛大鹏[1,2] 张建华[1,2] 

机构地区：[1]中国科学院航空光学成像与测量重点实验室,吉林长春130033 [2]中国科学院长春光学精密机械与物理研究所,吉林长春130033

出　　处：《液晶与显示》2013年第6期895-900,共6页Chinese Journal of Liquid Crystals and Displays

基　　金：国家"863"高技术研究发展计划资助项目(No.2008AA121803)

摘　　要：航空遥感相机每秒传输的图像数据流很大,在将图像数据存储到硬盘过程中,产生丢帧现象。为解决此问题,文章以灵巧型双波段航空遥感相机为例,介绍了一种硬盘高速存储图像数据技术及具体实现方法。从多角度对图像数据丢帧现象进行了详细的理论分析;在理论分析的基础上,通过实验所得数据证明了分析的正确性,明确指出图像数据在传输、存储过程中速率瓶颈所在;在理论分析和实验数据基础上,针对图像数据存储丢帧问题在硬件和软件两个方面提出了具体解决方法,最终成功解决了图像数据丢帧问题,图像数据无丢帧存储由8帧/s提高到24帧/s,硬盘工作效率由51.6%提高到78.3%。Aerial remote sensing camera image capture has a huge data flow per second for image transmission. The image frames lost in the process of storing to hard disk. To solve this problem, an image data high-speed storage technology by hard disk and implementation method are introduced based on the miniaturization dual-band aerial remote sensing camera. The problem resulting in the frame losing is analyzed theoretically from multi-angle. The analysis is proved accurate by the experimental data.The bottle-neck is pointed out clearly during the image transmission. Finally, based on theoretical analysis and experimental data, the concrete solutions are proposed in both hardware and software： use RAID technology and allocate large cache in hardware, use WINDOWS multiple-thread programming combined HOOK technology in software. With the combination of these methods, the problem of the frame losing is solved successfully. Image data is stored without losing frames from 8 frame/s increase to 24 frame/s.The work efficiency of the hard disk is improved from 51.6% to 78.3%.

关 键 词：双波段 可见光 红外 航空遥感 硬盘阵列 高速存储 多线程 

分 类 号：TP31[自动化与计算机技术—计算机软件与理论]