火星车图像压缩存储系统与关键算法设计  

Design of Image Compression Storage System and Key Algorithm for Mars Rover

作　　者：徐勇[1] 贾阳[1] 郭坚[1] 赵蕾[1] 朱剑冰[1] 王翠莲 范延芳[1] 佟玲 XU Yong;JIA Yang;GUO Jian;ZHAO Lei;ZHU Jianbing;WANG Cuilian;FAN Yanfang;TONG Ling(Beijing Institute of Spacecraft System Engineering,Beijing 100094,China)

机构地区：[1]北京空间飞行器总体设计部,北京100094

出　　处：《深空探测学报（中英文）》2020年第5期458-465,共8页Journal Of Deep Space Exploration

基　　金：国家中长期科技发展规划重大专项资助项目。

摘　　要：面向火星车的图像数据存储、压缩和传输任务进行分析,提出设计需求与关键设计特征,开展系统设计与关键软硬件架构、图像压缩核心算法与传输协议设计;设计并实现了火星车图像存储与压缩传输系统,其中实现了基于FPGA(Field Programmable Gate Array)的多相机分区并行图像文件系统、基于数据信号处理(Digital Signal Processing,DSP)实现了“自适应首1游程编码算法”,以及图像码流打包与控制软件;在型号研制中实现了多相机数据存储管理、图像压缩比灵活控制、质量渐进式传输、感兴趣区域(Region Of Interest,ROI)编码、抗误码扩散和图像缩略图生成下传等功能,满足我国首次火星探测任务可靠、高效、灵活的图像应用需求。Focused on the image data storage,compression and transmission of mars rover,system design and key hardware/software architecture design are carried out in this paper based on the analysis of function requirements and key design features.Image compression algorithm and transmission protocol are proposed,and the image storage and compression module in Mars rover is designed and implemented.The multi-camera partition parallel image file system based on FPGA(Field Programmable Gate Array)is realized.The adaptive first 1 run length coding algorithm for image compression based on DSP is realized on this module.Finally the function of multi-camera image data storage and management,flexible control of image compression ratio,quality progressive transmission,coding of region of interest,anti-error code diffusion and image thumbnail downward transmission are realized in the engineering development,meeting the reliable,efficient and flexible application requirements of China’s first Mars exploration mission.

关 键 词：火星车 图像压缩 图像存储 文件系统 

分 类 号：TP391.4[自动化与计算机技术—计算机应用技术]