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Volume 26 Issue 5
May  2004
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Yang Zhen, Yang Ru-liang, Liu Xiu-qing. Study of Polarimetric Interferometric Unsupervised Wishart Classification of SAR Images[J]. Journal of Electronics & Information Technology, 2004, 26(5): 752-759.
Citation: Yang Zhen, Yang Ru-liang, Liu Xiu-qing. Study of Polarimetric Interferometric Unsupervised Wishart Classification of SAR Images[J]. Journal of Electronics & Information Technology, 2004, 26(5): 752-759.

Study of Polarimetric Interferometric Unsupervised Wishart Classification of SAR Images

  • Received Date: 2003-02-28
  • Rev Recd Date: 2003-08-06
  • Publish Date: 2004-05-19
  • In this paper, an unsupervised Wishart classification scheme for polarimetric interferometric SAR data sets is introduced. A 6x6 polarimetric interferometric coherency matrix is used, in order to take simultaneously into account the full polarimetric information from one single image and the coherency information between the pair of these images. This classification scheme is applied to full polarimetric interferometric L-band SAR image pairs of Tien Shan, China, acquired by the NASA/JPL SIR-C/X-SAR sensor in 1994. The results show that this scheme can identify different terrain types and at the same time keep thr details of surface features, which improve greatly the results of the polarimetric unsupervised Wishart classification.
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  • Cloude S R, Papathanassiou K P. Polarimetric SAR interferometry. IEEE Trans. on GRS, 1998,36(5): 1551-1565.[2]Cloude S R, Pottier E. An entropy based classification scheme for land applications of polarimetric SAR. IEEE Trans. on GRS, 1997, 35(1): 68-78.[3]Lee J S, Grunes M R, Kwok R. Classification of multi-look polarimetric SAR imagery based on the complex Wishart distribution[J].Int. J. Remote Sensing.1994, 15(11):2299-2511[4]Lee J S, Grunes M R, Ainsworth T L, Du L, Schuler D L, Cloude S R. Unsupervised classification using polarimetric decomposition and the complex Wishart classifier. IEEE Trans. on GRS,1999, 37(5): 2249-2258.[5]Ferro-Famil L.[J].Pottier E, Lee J S. Unsupervised classification and analysisi of nature scenes from polarimetric interferometric SAR data, IGARSS01, Sydney, Australia, July.2001,:-[6]Ferro-Famil L, Pottier E, Lee J S. Unsupervised classification of multi-frequency and fully polarimetric SAR images based on the H/A/Alpha-Wishart classifier. IEEE Trans. on GRS, 2001,39(11): 2332-2342.
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