Unsupervised Classification of Remote Sensing Data Using Graph Cut-Based Initialization

Abstract

AbstractIn this paper we propose a multistage unsupervised classifier which uses graph-cut to produce initial segments which are made up of pixels with similar spectral properties, subsequently labelled by a fuzzy c-means clustering algorithm into a known number of classes. These initial segmentation results are used as a seed to the expectation maximization (EM) algorithm. Final classification map is produced by using the maximum likelihood (ML) classifier, performance of which is quite good as compared to other unsupervised classification techniques.KeywordsExpectation Maximization AlgorithmMulti Spectral ImageRemote Sensing DataRemote Sensing ImageGround Truth InformationThese keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.