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Edge Detection in Polarimetric SAR Image based on Bandelet Transform

by Roy Thankachan, Sethunadh R., Ameer P. M.
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International Journal of Computer Applications
Foundation of Computer Science (FCS), NY, USA
Volume 181 - Number 45
Year of Publication: 2019
Authors: Roy Thankachan, Sethunadh R., Ameer P. M.
10.5120/ijca2019918587

Roy Thankachan, Sethunadh R., Ameer P. M. . Edge Detection in Polarimetric SAR Image based on Bandelet Transform. International Journal of Computer Applications. 181, 45 ( Mar 2019), 33-38. DOI=10.5120/ijca2019918587

@article{ 10.5120/ijca2019918587,
author = { Roy Thankachan, Sethunadh R., Ameer P. M. },
title = { Edge Detection in Polarimetric SAR Image based on Bandelet Transform },
journal = { International Journal of Computer Applications },
issue_date = { Mar 2019 },
volume = { 181 },
number = { 45 },
month = { Mar },
year = { 2019 },
issn = { 0975-8887 },
pages = { 33-38 },
numpages = {9},
url = { https://ijcaonline.org/archives/volume181/number45/30424-2019918587/ },
doi = { 10.5120/ijca2019918587 },
publisher = {Foundation of Computer Science (FCS), NY, USA},
address = {New York, USA}
}
%0 Journal Article
%1 2024-02-07T01:09:12.847823+05:30
%A Roy Thankachan
%A Sethunadh R.
%A Ameer P. M.
%T Edge Detection in Polarimetric SAR Image based on Bandelet Transform
%J International Journal of Computer Applications
%@ 0975-8887
%V 181
%N 45
%P 33-38
%D 2019
%I Foundation of Computer Science (FCS), NY, USA
Abstract

Polarimetric Synthetic Aperture Radar is being used widely in order to extract the features of target image including civilian and military applications. Edge detection in PolSAR images is highly challenging task due to the occurrence of speckle noise in these images although widely used for the strategic applications. This paper presents a multi-resolution edge detection method for PolSAR images using the bandelet transform. Bandelet transform can provide flexible multiscale and directional decomposition of images including SAR images. Edge enhancement of the input image is done after decomposing it using bandelet transform and the resultant bandelet coefficients are modified through the maximisation of the polarimetric contrast between the adjacent subbands using Lagrangian methods. Taking advantage of the directional features of bandelet transform an algorithm is developed for retaining the geometrical features of images such as edges, boundaries etc present in SAR images while ensuring effective speckle noise removal. Here the geometrical features in images are enhanced in the bandelet domain by fusing the different directional subband coefficients at different scales. The performance of this method is verified using real PolSAR images. The result shows that proposed scheme eliminates speckle noise and retrieved edges are continuous and complete.

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Index Terms

Computer Science
Information Sciences

Keywords

PolSAR bandelet speckle directional subbands

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