Title :
A hypergraph-based approach to affine parameters estimation
Author :
Buló, S. Rota ; Albarelli, A. ; Torsello, A. ; Pelillo, M.
Author_Institution :
Dipt. di Inf., Univ. Ca´´ Foscari di Venezia, Venice
Abstract :
A problem commonly encountered in computer vision is the recovery of the transformation parameters between two affinely distorted images. In this paper, we propose a novel feature-based approach that casts the matching problem to the search of a maximum clique over an auxiliary hypergraph. We also introduce a continuous-based characterization of cliques in hypergraphs that allows us to handle the hard combinatorial problem using tools from the continuous domain. Finally, we present experimental result and comparisons with a state-of-the-art algorithm.
Keywords :
affine transforms; computer vision; feature extraction; graph theory; image matching; search problems; affinely distorted image; computer vision; feature-based approach; hard combinatorial problem; hypergraph-based approach; matching problem; maximum clique search; state-of-the-art algorithm; transformation parameter estimation; Computer vision; Detectors; Feature extraction; Frequency domain analysis; Image analysis; Image converters; Parameter estimation; Phase detection; Phase estimation; Voting;
Conference_Titel :
Pattern Recognition, 2008. ICPR 2008. 19th International Conference on
Conference_Location :
Tampa, FL
Print_ISBN :
978-1-4244-2174-9
Electronic_ISBN :
1051-4651
DOI :
10.1109/ICPR.2008.4761349