Non-stationary speckle reduction in high resolution SAR images

Zhihuo Xu, Quan Shi, Yunjin Chen, Wensen Feng, Yeqin Shao, Ling Sun, Xinming Huang

Research output: Contribution to journalArticleResearchpeer-review

Abstract

This paper attempts to address non-stationary speckle reduction in high-resolution synthetic aperture radar (HR-SAR) images, using a novel Bayesian approach. First, non-stationary speckle is defined. Second, an innovative log-normal mixture model (LogNMM) is proposed to model the underlying data; the data priors are represented by using Fields of Experts (FoE); and then the despeckling model is derived based on maximum a posteriori (MAP) method. The experimental results demonstrate that the proposal produces state-of-the-art despeckling performance on synthetic and real HR-SAR data, and prove that the speckle is non-stationary in the HR-SAR data of interest.

Original languageEnglish
Pages (from-to)72-82
Number of pages11
JournalDigital Signal Processing
Volume73
DOIs
Publication statusPublished - 1 Feb 2018

Fingerprint

Image resolution
Speckle
Synthetic aperture radar

Keywords

  • Field of Experts (FoE)
  • Log normal distribution mixture model (LogNMM)
  • Maximum a posteriori (MAP)
  • Speckle
  • Synthetic aperture radar (SAR)

ASJC Scopus subject areas

  • Signal Processing
  • Electrical and Electronic Engineering

Cite this

Xu, Z., Shi, Q., Chen, Y., Feng, W., Shao, Y., Sun, L., & Huang, X. (2018). Non-stationary speckle reduction in high resolution SAR images. Digital Signal Processing, 73, 72-82. https://doi.org/10.1016/j.dsp.2017.10.017

Non-stationary speckle reduction in high resolution SAR images. / Xu, Zhihuo; Shi, Quan; Chen, Yunjin; Feng, Wensen; Shao, Yeqin; Sun, Ling; Huang, Xinming.

In: Digital Signal Processing, Vol. 73, 01.02.2018, p. 72-82.

Research output: Contribution to journalArticleResearchpeer-review

Xu, Z, Shi, Q, Chen, Y, Feng, W, Shao, Y, Sun, L & Huang, X 2018, 'Non-stationary speckle reduction in high resolution SAR images' Digital Signal Processing, vol. 73, pp. 72-82. https://doi.org/10.1016/j.dsp.2017.10.017
Xu, Zhihuo ; Shi, Quan ; Chen, Yunjin ; Feng, Wensen ; Shao, Yeqin ; Sun, Ling ; Huang, Xinming. / Non-stationary speckle reduction in high resolution SAR images. In: Digital Signal Processing. 2018 ; Vol. 73. pp. 72-82.
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