Point pattern matching based on line graph spectral context and descriptor embedding

Tang, Jun, Shao, Ling and Jones, Simon (2014) Point pattern matching based on line graph spectral context and descriptor embedding. In: WACV 2014 - IEEE Winter Conference on Applications of Computer Vision, 24th - 26th March, Steamboat Springs, Colorado.

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Official URL: http://dx.doi.org/10.1109/WACV.2014.6836123

Abstract

Spectral methods have been extensively studied for point pattern matching. In this work, we aim to render the spectral matching algorithm more robust for positional jitter and outliers. We concentrate on the issue of spectral representation for point patterns. A local structural descriptor, called the line graph spectral context, is proposed to characterize the attribute of point patterns, making it fundamentally different from the available representation approaches at the global level. For any given point, we first construct a line graph using its neighboring points. Then the eigenvalues of various matrix representations associated with the obtained line graph are used as the point descriptor. Furthermore, the similarities between the descriptors are evaluated by comparing their low dimensional embedding via the technique of multiview spectral embedding. The proposed descriptor is finally integrated with a graph-matching framework for establishing the correspondences. Comparative experiments conducted on both synthetic data and real-world images show the effectiveness of the proposed method, especially in the presence of positional jitter and outliers.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: eigenvalues and eigenfunctions, graph theory, image matching, image representation, matrix algebra, spectral analysis
Subjects: G400 Computer Science
Department: Faculties > Engineering and Environment > Computer Science and Digital Technologies
Depositing User: Paul Burns
Date Deposited: 16 Jun 2015 11:16
Last Modified: 10 Aug 2015 11:05
URI: http://nrl.northumbria.ac.uk/id/eprint/22939

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