NDLI: Mutual information based registration of SAR images

Content Provider	IEEE Xplore Digital Library
Author	Hua Xie Pierce, L.E. Ulaby, F.T.
Copyright Year	2003
Description	Author affiliation: Dept. of Electr. Eng. & Comput. Sci., Michigan Univ., Ann Arbor, MI, USA (Hua Xie; Pierce, L.E.; Ulaby, F.T.)
Abstract	Interpolation artifacts caused by the discrete nature of digital images and interpolation kernels have been previously reported in the literature for mutual information based image registration. Unfortunately they become pronounced in the case of SAR (synthetic aperture radar) image registration, exacerbated by speckle noise. We analyzed the two widely used interpolation algorithms in image registration, namely bilinear interpolation and partial volume interpolation. According to simulation results, we found that the former algorithm produces an extremely non-smooth metric function, whereas the latter method introduces a spurious global optimum at some position of misalignment, instead of the position of perfect registration, under certain circumstances. To make the mutual information criterion useful for the application of SAR image registration, we proposed two pre-processing steps including speckle reduction and an appropriate selection of the number of bins for histogram construction. Simulation results indicate that, by this effort, interpolation artifacts in the mutual information function can be significantly suppressed, and as a consequence, accurate registration is allowed. In conjunction with the two proposed pre-processing steps, we implemented a multiscale elastic registration algorithm. An example of registering a pair of JERS-1 (L-band, HH-polarization) and RADARSAT (C-band, HH-polarization) images verified the potential of this algorithm.
Starting Page	4028
Ending Page	4031
File Size	2050223
Page Count	4
File Format	PDF
ISBN	0780379292
DOI	10.1109/IGARSS.2003.1295351
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2003-07-21
Publisher Place	France
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Mutual information Interpolation Image registration Speckle Digital images Kernel Synthetic aperture radar Image analysis Algorithm design and analysis Histograms
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in