Automatic SAR image enhancement based on curvelet transform and genetic algorithm

Jie Hu, Ying Li, Yu Jia

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

This paper presents an automatic enhancement method for SAR images based on the mirror-extended curvelet transform and genetic algorithm. Firstly, an improved gain function which integrates the speckle reduction with the feature enhancement is proposed to nonlinearly shrink and stretch the curvelet coefficients, and then the genetic algorithm (GA) is used to automatically adjust the parameters of the gain function. We propose an objective criterion for enhancement, and attempt to find the (near) optimal image according to the respective criterion. We employ the GA as a global search strategy for the best enhancement which has a satisfactory compromise between sharpening and smoothing. The experimental results show that the proposed method can efficiently enhance the edge features and contrast of SAR images and reduce the speckle noises, and outperforms the wavelet- and curvelet-based non-automatic enhancement methods.

Original languageEnglish
Title of host publicationIntelligent Science and Intelligent Data Engineering - Second Sino-Foreign-Interchange Workshop, IScIDE 2011, Revised Selected Papers
Pages326-333
Number of pages8
DOIs
StatePublished - 2012
Event2nd Sino-Foreign-Interchange Workshop on Intelligent Science and Intelligent Data Engineering, IScIDE 2011 - Xi'an, China
Duration: 23 Oct 201125 Oct 2011

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume7202 LNCS
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349

Conference

Conference2nd Sino-Foreign-Interchange Workshop on Intelligent Science and Intelligent Data Engineering, IScIDE 2011
Country/TerritoryChina
CityXi'an
Period23/10/1125/10/11

Keywords

  • Genetic algorithm
  • Image enhancement
  • Mirror-extended curvelet transform
  • SAR image
  • Speckle noise

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