Fully Polarimetric Land Cover Classification Based on Markov Chains

摘要

A novel land cover classification procedure is presented utilizing the infor mation content of fully polarimetric SAR images. The Cameron cohere nt target decomposition (CTD) is employed to characterize land cover pixel by pixel. Cameron’s CTD is employed since it provides a complete set of elem entary scattering mechanisms to describe the physical properties of t he scatterer. The novelty of the proposed land classification approach lies on the fact that the features used for classification are not the types of the elementary scatterers themselves, but the way these types of scatterers alternate from p ixel to pixel on the SAR image. Thus, transition matrices that represent loc al Markov models are used as classification features for land cover classification. The classification rule employs only the most important transitions for decision making. The Frobenius inner product is employed as similarity measure. Ten different types of land cover are used for testing the proposed method. In this aspect, the classification performance is significantly high.