基于降斑处理的SAR图像实时压缩系统  

SAR Image Real-time Compression System Based on De-Speckle Preprocessing

作　　者：李涛[1] 田松[1] 许悦雷[1] 郭忠[2] 

机构地区：[1]空军工程大学航空航天工程学院,陕西西安710038 [2]泰山医学院,山东泰安271000

出　　处：《电视技术》2012年第17期58-62,共5页Video Engineering

基　　金：国防科技重点实验室基金资助项目(9140c61040590c61);航空科学基金资助项目(20115896022)

摘　　要：为了对SAR图像进行实时压缩和本地存储,基于FPGA和ADV212芯片,利用空域增强Lee滤波算法,设计实现了SAR图像实时降斑压缩系统。测试结果表明,在降斑处理基础上,系统能对大数据量SAR图像进行压缩,产生JPEG2000格式码流,满足实时性、压缩模式和压缩比可选的要求,可支撑目标探测、区域监控等任务应用。In order to compress real-time and storage in local position for SAR images, a system for SAR image real-time compression and de-speckle is designed and implemented based on FPGA and ADV212, using enhance Lee filtering in space domain. Test results show that SAR images with largely data can be compressed by system while reducing the speckle and coding streams of JPEG2000 can be generated. The design can meet the real-time and the requirements, which compression mode and ratio can be selected. The desian also can detect target and monitor region.

关 键 词：SAR图像实时压缩 降斑 FPGA ADV212 JPEG2000 

分 类 号：TN919.8[电子电信—通信与信息系统]