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- W2012181227 abstract "A fast approach to obtain segmentation of SAR images has been suggested here based on the local statistical characteristics using Markov random field (MRF) model on region adjacency graph (RAG). First, an initially over-segmented image derived from the watershed segmentation algorithm as well as the original SAR image is taken as the inputs of the proposed method. Secondly, a MRF is defined on RAG of the initial over segmented regions, with a novel multilevel logistic (MLL) model for the region class labels and Gamma distribution for the marginal distribution of each class in the SAR images. The criterion used for getting the optimal segmentation is the maximization of the posterior marginal (MPM), which minimizing the expected value of the number of the misclassified regions in the over-segmented image. In the implementation, the expectation maximization (EM) algorithm is used to estimate the parameters of Gamma distribution, and the parameters of the MLL model is derived from the RAG. Experimental results on real SAR images show that the proposed method can reduce the computational complexity greatly and provide precise segmentation results" @default.
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- W2012181227 date "2006-10-01" @default.
- W2012181227 modified "2023-10-11" @default.
- W2012181227 title "An Unsupervised Segmentation Method Using Markov Random Field on Region Adjacency Graph for SAR Images" @default.
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- W2012181227 doi "https://doi.org/10.1109/icr.2006.343148" @default.
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