Unsupervised segmentation of polarimetric SAR data using the covariance matrix

作者: E. Rignot , R. Chellappa , P. Dubois

DOI: 10.1109/36.158863

关键词: CovarianceBackscatterSynthetic aperture radarComputer scienceImage processingRadar imagingFuzzy clusteringRadarRemote sensingCluster analysisMicrowaveCovariance matrixSpeckle patternMicrowave imagingPolarimetryImage segmentation

摘要: A method for unsupervised segmentation of polarimetric synthetic aperture radar (SAR) data into classes homogeneous microwave backscatter characteristics is presented. Classes are selected on the basis a multidimensional fuzzy clustering logarithm parameters composing covariance matrix. The procedure uses both amplitude and phase information, adapted to presence image speckle, does not require an arbitrary weighting different channels; it also provides partitioning each sample used multiple clusters. Given backscatter, entire classified using maximum posteriori classifier. Four-look SAR complex lava flows sea ice acquired by NASA/JPL airborne (AIRSAR) segmented this technique. >

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