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Clique descriptor of affine invariant regions for robust wide baseline image matching

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Shin, Dongjoe and Tjahjadi, Tardi. (2010) Clique descriptor of affine invariant regions for robust wide baseline image matching. Pattern Recognition, Vol.43 (No.10). pp. 3261-3272. ISSN 0031-3203

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Official URL: http://dx.doi.org/10.1016/j.patcog.2010.04.010

Abstract

Assuming that the image distortion between corresponding regions of a stereo pair of images with wide baseline can be approximated as an affine transformation if the regions are reasonably small, recent image matching algorithms have focused on affine invariant region (IR) detection and its description to increase the robustness in matching. However, the distinctiveness of an intensity-based region descriptor tends to deteriorate when an image includes homogeneous texture or repetitive pattern. To address this problem, we investigated the geometry of a local IR cluster (also called a clique) and propose a new clique-based image matching method. In the proposed method, the clique of an IR is estimated by Delaunay triangulation in a local affine frame and the Hausdorff distance is adopted for matching an inexact number of multiple descriptor vectors. We also introduce two adaptively weighted clique distances, where the neighbour distance in a clique is appropriately weighted according to characteristics of the local feature distribution. Experimental results show the clique-based matching method produces more tentative correspondences than variants of the SIFT-based method.

Item Type:	Journal Article
Subjects:	Q Science > QA Mathematics > QA76 Electronic computers. Computer science. Computer software T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions:	Faculty of Science > Engineering
Library of Congress Subject Headings (LCSH):	Matching theory, Image registration, Computer vision
Journal or Publication Title:	Pattern Recognition
Publisher:	Pergamon
ISSN:	0031-3203
Official Date:	October 2010
Volume:	Vol.43
Number:	No.10
Number of Pages:	12
Page Range:	pp. 3261-3272
Identification Number:	10.1016/j.patcog.2010.04.010
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Restricted or Subscription Access
Funder:	Tardi Tjahjadi Publications
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URI:	http://wrap.warwick.ac.uk/id/eprint/5542