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Unsupervised SAR Image Segmentation Using a Hierarchical TMF Model

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6 Author(s)
Peng Zhang ; Nat. Key Lab. of Radar Signal Process., Xidian Univ., Xian, China ; Ming Li ; Yan Wu ; Gaofeng Liu
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The triplet Markov field (TMF) model recently proposed is suitable for tackling the nonstationary image segmentation. In this letter, we propose a hierarchical TMF (HTMF) model for unsupervised synthetic aperture radar (SAR) image segmentation. In virtue of the Bayesian inference on the quadtree, the HTMF model captures the global and local image characteristics more precisely in the bottom-up and top-down probability computations. In this way, the underlying spatial structure information is effectively propagated. To model the SAR data related to radar backscattering sources, generalized Gamma distribution is utilized. The effectiveness of the proposed HTMF model is demonstrated by application to simulated data and real SAR image segmentation.

Published in:

Geoscience and Remote Sensing Letters, IEEE  (Volume:10 ,  Issue: 5 )