An Algorithm of Filtering InSAR Interferogram Based on the Combination of Wavelet Transform and Sigma Filter

DOI

10.2991/rsete.2013.2How to use a DOI?

Keywords

InSAR Interferogram, Wavelet-Sigma filter, Residues

Abstract

In order to enhance the quality in filtering InSAR interferograms, this paper proposes and constructs a Wavelet-Sigma filter (WSF) in view of the respective merits of wavelet transform and Sigma filter. The WSF and its computer program are developed to remove interferogram noise. To validate the proposed filter, the localized area around Bam of Iran is selected as the testing site an ASAR C-band interferogram is utilized as the source data for filtering. Several indicators, including visualization effect, standard deviation of phase derivatives and number of residues, are taken into account to assess the effectiveness of this filter. The results show that WSF has some prominent advantages in terms of denoising and edge protection, if compared with two typical methods presented previously, i.e., wavelet soft-threshold filter and Sigma filter.

Copyright

© 2013, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Guolin Cai
AU  - Aoli Zhang
AU  - Song Zhuo
AU  - Dejun Feng
AU  - Meiling Sun
PY  - 2013/08
DA  - 2013/08
TI  - An Algorithm of Filtering InSAR Interferogram Based on the Combination of Wavelet Transform and Sigma Filter
BT  - Proceedings of the 2013 the International Conference on Remote Sensing, Environment and Transportation Engineering (RSETE 2013)
PB  - Atlantis Press
SP  - 6
EP  - 10
SN  - 1951-6851
UR  - https://doi.org/10.2991/rsete.2013.2
DO  - 10.2991/rsete.2013.2
ID  - Cai2013/08
ER  -