Fast local SAR image despeckling by edge-avoiding wavelets


Erer I., Kaplan N. H.

SIGNAL IMAGE AND VIDEO PROCESSING, vol.13, no.6, pp.1071-1078, 2019 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 13 Issue: 6
  • Publication Date: 2019
  • Doi Number: 10.1007/s11760-019-01446-z
  • Journal Name: SIGNAL IMAGE AND VIDEO PROCESSING
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.1071-1078
  • Keywords: Synthetic aperture radar, Image despeckling, Edge-avoiding wavelets, Image processing, SPECKLE REDUCTION, ENHANCEMENT
  • Istanbul Technical University Affiliated: Yes

Abstract

In this paper, a local despeckling algorithm based on a trous version of edge-avoiding wavelets for synthetic aperture radar images is proposed. Edge-avoiding wavelets provide the decomposition of the input image into several detail layers and a residual image which corresponds to the despeckled result by means of weighted a trous wavelet transform. The weight function is similar to the range kernel of the well-known bilateral filter and is determined by enhancing evaluation indexes. Visual and quantitative comparisons validate the performance of the proposed method in terms of both speckle reduction and edge preservation ability.