一种基于FPGA和ADV212的遥感卫星图像JPEG2000实时解压缩方法  

An Approach to Realtime Decompression of Remote Sensing Satellite Image with JPEG2000 Based on FPGA and ADV212

作　　者：欧民[1] 谭金林 张国华[1] 

机构地区：[1]中国空间技术研究院西安分院,西安710000

出　　处：《空间电子技术》2014年第1期11-14,共4页Space Electronic Technology

摘　　要：文章提出了一种基于FPGA和专用JPEG2000解压缩芯片(ADV212)实时处理高速卫星遥感图像数据的方法。ADV212完成压缩码流的解码、反量化、反小波变换;FPGA控制ADV212的工作模式,读写操作SRAM,并实现数据流向选择和数据拼接处理功能。通过与当前主流解压缩方式进行比较,验证了此方法具有良好的性能。A real-time method to process high speed image data of remote sensing satellite is put forward based on FP-GA and special chip of decompression（ADV212）. Reverses wavelet transforming,reverse quantized and entropy decode of compressed data stream are accomplished by chip ADV212. FPGA controls work pattern of ADV212,as well as read and write of SRAM. It also realizes the function choosing data and splicing processing. The mainstream way of decompress with comparison shows that this method has good performance.

关 键 词：解压缩 JPEG2000 ADV212 JPEG2000 ADV212 

分 类 号：TP75[自动化与计算机技术—检测技术与自动化装置]