The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
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Articles | Volume XLI-B7
Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLI-B7, 393–397, 2016
https://doi.org/10.5194/isprs-archives-XLI-B7-393-2016
Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLI-B7, 393–397, 2016
https://doi.org/10.5194/isprs-archives-XLI-B7-393-2016

  21 Jun 2016

21 Jun 2016

COUPLING REGULAR TESSELLATION WITH RJMCMC ALGORITHM TO SEGMENT SAR IMAGE WITH UNKNOWN NUMBER OF CLASSES

Y. Wang, Y. Li, and Q. H. Zhao Y. Wang et al.
  • Institute for Remote Sensing Science and Application, School of Geomatics, Liaoning Technical University, Fuxin, Liaoning 123000, China

Keywords: SAR Image Segmentation, Segmentation with Unknown Number of Classes, Regular Tessellation, RJMCMC Algorithm

Abstract. This paper presents a Synthetic Aperture Radar (SAR) image segmentation approach with unknown number of classes, which is based on regular tessellation and Reversible Jump Markov Chain Monte Carlo (RJMCMC') algorithm. First of all, an image domain is portioned into a set of blocks by regular tessellation. The image is modeled on the assumption that intensities of its pixels in each homogeneous region satisfy an identical and independent Gamma distribution. By Bayesian paradigm, the posterior distribution is obtained to build the region-based image segmentation model. Then, a RJMCMC algorithm is designed to simulate from the segmentation model to determine the number of homogeneous regions and segment the image. In order to further improve the segmentation accuracy, a refined operation is performed. To illustrate the feasibility and effectiveness of the proposed approach, two real SAR image is tested.