NDLI: Area Based Approach to Registration of SAR Images with Sub-pixel Accuracy

Content Provider	IEEE Xplore Digital Library
Author	Suvesh Kumar Vinay Rishiwal Joglekar, P.N.
Copyright Year	2006
Description	Author affiliation: Dept. of CS & IT, M.J.P. Rohilkhand Univ., Bareilly (Suvesh Kumar; Vinay Rishiwal)
Abstract	Synthetic aperture radar (SAR) images are often difficult to register with other images or maps of the same area due to speckle noise and salt and pepper texture. The geo-reference of the image is conventionally realized by manual identification of ground control points (GCPs) and image rectification. However as the tonal contrast present within SAR images changes in accordance to the dielectric properties which varies seasonally, making geo-referencing of temporal SAR images acquired for the same geographical area more difficult. In the present paper a robust technique based on area base matching algorithm is proposed to find out GCP correspondence. The area based algorithms works out a statistical similarity measure for a small window of points or template between two images. This technique provides good match when there is a tonal similarity between two images. The SAR images show drastic seasonal variations thus restricting use of this algorithm. However the edge images show a fair match and can be used for finding out a similarity measure it was observed that the edges remains fairly stable for a long time. This paper presents the procedure for geo-referencing temporal images acquired for the same region by automatic identification of GCPs on the edge image by template matching technique. The procedure to extract high quality edge contours from SAR images for template matching has also been presented
Starting Page	1
Ending Page	4
File Size	4201002
Page Count	4
File Format	PDF
ISBN	1424405483
DOI	10.1109/TENCON.2006.344132
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-11-14
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Image edge detection Synthetic aperture radar Speckle Image registration Dielectrics Image generation Optical pulse generation Radar imaging Filters Polynomials
Content Type	Text
Resource Type	Article

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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
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