NDLI: Affine-invariant SIFT descriptor with global context

Content Provider	IEEE Xplore Digital Library
Author	Bei Cao CaiWen Ma ZhenTao Liu
Copyright Year	2010
Description	Author affiliation: Xi'an University of Post & Telecommunications, Xi'an, China (ZhenTao Liu) \|\| Xi'an Institute of Optics and Precision Mechanics, CAS, Xi'an, China (Bei Cao; CaiWen Ma)
Abstract	The paper proposed a new image matching method combining affine-invariant SIFT feature descriptor with global context. Affine-SIFT (ASIFT) can find large numbers of correct matches even with great variation of camera axis orientation, however when there are several similar regions or objects between the query and search images, it may also produce many mismatches. Therefore, we intend to introduce global context to resolve ambiguities that can occur locally when an image has multiple similar regions. A global context vector that adds curvilinear shape information from a much larger neighborhood, thus reducing mismatches when multiple local descriptors are similar. We have tested our method on various images and compare matching accuracy between the ASIFT descriptor with global context to that without.
Starting Page	68
Ending Page	71
File Size	544417
Page Count	4
File Format	PDF
ISBN	9781424465132
e-ISBN	9781424465163
DOI	10.1109/CISP.2010.5647071
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-10-16
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Context Computer vision Accuracy affine invariance Shape Optical distortion local ambiguity global context Cameras Distortion measurement image matching
Content Type	Text
Resource Type	Article

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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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