文章基本信息

标题：Investigations of SAR Polarimetric Features on Land-Cover Classification
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作者：Liang Gao ; Yifang Ban
期刊名称：ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
印刷版ISSN：2194-9042
电子版ISSN：2194-9050
出版年度：2008
卷号：XXXVII Part B6b
页码：317-322
出版社：Copernicus Publications
摘要：This paper represents a study on land-cover classification using different polarimetric SAR features. The experiment is carried out using C- and L-band fully polarimetric EMISAR data acquired on July 5 and 6, 1995 over an agricultural area in Fj.rdhundra, near Uppsala, Sweden. The polarimetric features investigated are coherency matrix, intensity of both C- and L-band SAR, and Cloud decomposition product H(1-A) of L-band, and 'entropy' texture of L-band HV intensity image. In order to investigate the performance of the different features, each feature is classified using a classifier that is best suited for the feature based on previous research. H/A/ α Wishart unsupervised classification is used for coherency matrix while neural network is applied to six "mean" texture layers of C and L bands fully polarimetric intensity images. The best classification accuracy was achieved using the intensity images combined with H(1-A) and 'entropy' texture (overall: 81%; kappa: 0.7). The producer's accuracy of intensity classification result for forest is 100.0% which reveals that the H(1-A) of L-band is a very good indicator for forest. The 'entropy' texture of L-band HV intensity image has the potential to be a good indicator for road with 77.2% user accuracy, while road is not discriminated in coherency matrix. The results indicate that the supervised classification of the intensity of both C- and L- bands has a good potential for land-cover mapping in this study area
关键词：SAR; Polarization; Multi-frequency; Land-Cover; Classification