Speckle Suppress for SAR Images Based on Pyramidal Morphology Algorithm  

基于塔形形态算法的 SAR图像相干斑抑制(英文)

作　　者：张弓 朱兆达 朱宁仪 

机构地区：[1]College of Information Science and Technology,Nanjing University of Aeronautics and Astronautics

出　　处：《Chinese Journal of Aeronautics》2003年第2期103-107,共5页中国航空学报（英文版）

基　　金：the National Natural Science Foundation of Jiangsu Province.China.( No.BK2 0 0 10 47)

摘　　要：A Pyramidal Morphology Algorithm is developed for speckle reduction of SARimages in this paper. For reducing the loss of information in the pyramidal algorithm for morphologyprocessing, in this modified algorithm, the sub-images are processed parallel in the downsamplingoperation and the sub-images are reconstructed in the upsampling operation. It can be applied toimage filtering parallel. After analysis the computer simulations show that these two kinds offilters are both effective in speckle reduction of SAR images. The modified parallel algorithm doesbetter than the original algorithm and Lee filter on some characteristics.A Pyramidal Morphology Algorithm is developed for speckle reduction of SARimages in this paper. For reducing the loss of information in the pyramidal algorithm for morphologyprocessing, in this modified algorithm, the sub-images are processed parallel in the downsamplingoperation and the sub-images are reconstructed in the upsampling operation. It can be applied toimage filtering parallel. After analysis the computer simulations show that these two kinds offilters are both effective in speckle reduction of SAR images. The modified parallel algorithm doesbetter than the original algorithm and Lee filter on some characteristics.

关 键 词：speckle reduction SAR mathematical morphology pyramidal algorithm IMAGEPROCESSING 

分 类 号：V243[航空宇航科学与技术—飞行器设计]