Paper Info
Title
Multiresolution map despeckling of COSMO-SkyMed images
Abstract
This paper describes the most recent achievements in speckle reduction of COSMO-SkyMed (CSK@) synthetic aperture radar (SAR) data. An advanced multiresolution despeckling filter, based on undecimated wavelet transform (UDWT) and maximum a-posteriori (MAP) estimation has been specialized and optimized to CSKê data, both single- and multi-look. The tradeoff between performances and computational complexity has been investigated: Laplacian-Gaussian and generalized Gaussian (GG) priors for MAP estimation in UDWT domain differ by one order of magnitude in computation cost. Pre-processing of point targets and segmentation of wavelet planes has been exploited to effectively handle the heterogeneity of the data. Besides traditional supervised methods to evaluate the quality of despeckling, a novel procedure, fully automated, based on bivariate analysis of noisy and denoised image has been devised.
Year
DOI
Venue
2012
10.1109/IGARSS.2012.6352363
Geoscience and Remote Sensing Symposium
Keywords
Field
DocType
Gaussian processes,artificial satellites,geophysical image processing,image denoising,image resolution,image segmentation,maximum likelihood estimation,radar imaging,synthetic aperture radar,wavelet transforms,Cosmo-skyMed image,Laplacian-Gaussian,MAP estimation,UDWT,bivariate analysis,generalized Gaussian,image denoising,maximum a posteriori estimation,multresolution despeckling filter,noisy image,point target preprocessing,speckle reduction,supervised method,synthetic aperture radar,undecimated wavelet transform,wavelet plane segmentation
Computer science,Synthetic aperture radar,Remote sensing,Image segmentation,Gaussian process,Artificial intelligence,Wavelet,Wavelet transform,Computer vision,Radar imaging,Pattern recognition,Gaussian,Computational complexity theory
Conference
ISSN
ISBN
Citations 
2153-6996 E-ISBN : 978-1-4673-1158-8
978-1-4673-1158-8
0
PageRank 
References 
Authors
0.34
6
4
Name
Order
Citations
PageRank
Luciano Alparone190180.27
Fabrizio Argenti217426.24
Tiziano Bianchi3100362.55
Lapini, A.400.34