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Water/land segmentation in SAR images using level sets

Water/land segmentation in SAR images using level sets,10.1109/ICIP.2008.4712150,Margarida Silveira,Sandra Heleno

Water/land segmentation in SAR images using level sets   (Citations: 3)
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This paper presents a method for the separation between land and water in SAR amplitude images. The proposed technique uses region based level sets and adopts a mixture of Log-normal densi- ties as the probabilistic model for the pixel intensities in both the water and the land regions. The Expectation-Maximization (EM) algorithm is used to estimate the probability density functions in each region. Experimental results with real SAR data are provided to illustrate the performance of the proposed algorithm.
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    • ...Water/land segmentation as a specific topic dealing with only two classes of samples, which is widely used in applications such as environmental monitoring [1], target extraction of coastline [2], bridge, etc [3]...
    • ...Though water is a specific reflector at radar wavelength that often appears relatively low intensity in SAR images [3], it is difficult to reach a precise segmentation and in real time...

    Hua Zhonget al. Water/land segmentation for sar images based on geodesic distance

    • ...Preliminary results of this work were presented in the author’s conference publication [11]...

    Margarida Silveiraet al. Separation Between Water and Land in SAR Images Using Region-Based Lev...

    • ...For instance in [9] a finite mixture of Gamma distributions was used, in [14] a Rayleigh mixture model and in [15] a mixture of log-Normals was adopted...
    • ...The proposed appproach extends a technique recently proposedin[15] forwater/land segmentation in SAR images...
    • ...The technique described in [15] used region based level sets and adopted a mixture of log-Normal densities, with a predefined number of components, as the probabilistic model for the pixels intensity in each of the two classes (water and land)...

    Margarida Silveiraet al. Classification of water regions in SAR images using level sets and non...

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