Skip to Main content Skip to Navigation
Reports

Modeling the statistics of high resolution SAR images

Abstract : In the context of remotely sensed data analysis, a crucial problem is represented by the need to develop accurate models for the statistics of pixel intensities. In this work, we develop a parametric finite mixture model for modelling the statistics of intensities in high resolution Synthetic Aperture Radar (SAR) images. Along with the models we design an efficient parameter estimation scheme by integrating the Stochastic Expectation Maximization scheme and the Method of log-cumulants with an automatic technique to select, for each mixture component, an optimal parametric model taken from a predefined dictionary of parametric probability density functions (pdf). In particular, the proposed dictionary consists of eight most efficient state-of-the-art SAR-specific pdfs: Nakagami, log-normal, generalized Gaussian Rayleigh, Heavy-tailed Rayleigh, Weibull, K-root, Fisher and generalized Gamma. The experiment results with a set of several real SAR (COSMO-SkyMed) images demonstrate the high accuracy of the designed algorithm, both from the viewpoint of a visual comparison of the histograms, and from the viewpoint of quantitive measures such as correlation coefficient (always above 99,5%) . We stress, in particular, that the method proves to be effective on all the considered images, remaining accurate for multimodal and highly heterogeneous images.
Document type :
Reports
Complete list of metadata

https://hal.inria.fr/inria-00342681
Contributor : Vladimir Krylov <>
Submitted on : Friday, January 30, 2009 - 8:25:30 PM
Last modification on : Monday, October 12, 2020 - 10:30:13 AM
Long-term archiving on: : Wednesday, September 22, 2010 - 11:31:46 AM

File

RR-6722.pdf
Files produced by the author(s)

Identifiers

  • HAL Id : inria-00342681, version 2

Collections

Citation

Vladimir Krylov, Gabriele Moser, Sebastiano B. Serpico, Josiane Zerubia. Modeling the statistics of high resolution SAR images. [Research Report] RR-6722, INRIA. 2008, pp.41. ⟨inria-00342681v2⟩

Share

Metrics

Record views

648

Files downloads

468