Speckle filtering of Synthetic Aperture Radar images using filters with object-size-adapted windows
作者机构：C-COREFaculty of Engineering and Applied ScienceMemorial University of NewfoundlandSt John’sNLCanada Department of Electrical EngineeringFaculty of Engineering and Applied ScienceMemorial University of NewfoundlandSt.John’sNLCanada Canada Center for Mapping and Earth ObservationOttawaONCanada
出 版 物：《International Journal of Digital Earth》 (国际数字地球学报（英文）)
年 卷 期：2018年第11卷第7期
页 面：703-729页
核心收录：
学科分类：08[工学] 0812[工学-计算机科学与技术（可授工学、理学学位）]
基 金：Canada Center for Mapping and Earth Observation and Environment and Climate Change Canada Government of Canada Research and Development Corporation of Newfoundland and Labrador, RDC Directorate of Environment and Climate Change, India, DoECC
主 题：Speckle Synthetic Aperture Radar(SAR) filters adaptive window size
摘 要：Speckle degrades the radiometric quality of a Synthetic Aperture Radar(SAR)*** methods for speckle reduction have used a fixedsize window for filtering the entire ***,however,may not be effective for the entire image,as land covers of different sizes require different filtering *** this paper,a novel method is proposed by which each pixel in the image is filtered with a window appropriate for the size of object within *** real in-phase and the imaginary quadrature components of the SAR images determine the best window size and the pixels in the intensity image are filtered using their own optimal *** proposed method is presented for both singleand multi-polarized SAR images,and the results of several common filters that were modified are *** approach is applied to two RADARSAT-2 images:one over San Francisco,California,USA and the other over ***’s,Newfoundland and Labrador,Canada,producing results that were similar to,or outperformed,comparable filters while retaining details and suppressing speckle *** the method was successful for single-look intensity data,it offers great potential for multi-look and amplitude data as well.
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