Unsupervised and Supervised Classification of PolSAR Image Using Decomposition Techniques: An Analysis from L-Band SIR-C Data
The classification of Polarimetric Synthetic Aperture Radar (PolSAR) image has become a very important task after availability of data by using different techniques. In this paper L-band Quad Pole SIR-C PolSAR dataset of Kolkata City, India is used. We applied different unsupervised and supervised classification techniques on SIR-C dataset. The unsupervised classification techniques include like H-alpha, Wishart H-alpha and Wishart H-A-alpha, whereas in supervised classification classes can be made manually using clustering process. This paper presents the comparison of unsupervised and supervised classification on the basis of four major classes like water, open land, vegetation and settlement. In unsupervised classification we observed that the Wishart H-A-alpha classified image is not only better than H-alpha and Wishart H-alpha classified image but also better than supervised classification for classification PolSAR image analysis.
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