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Characterization of keypoints in images.

Proc. SPIE 2093, 450-461 (1994)
DOI
Open Access Green möglich sobald Postprint bei der ZB eingereicht worden ist.
In this contribution we investigate the performance of steerable functions to characterize keypoints. Steerable functions were introduced recently by Perona as an efficient method to calculate the response of a filter in a continuum of orientations, scales, and other parameters. For the analysis of points with events at multiple orientations, functions with a high orientational resolution are needed. We discuss criteria to judge the quality of a function to serve for orientation analysis. To handle line as well as edge junctions, we use a complex function with the real and imaginary part approximately in quadrature. An associated one-sided function allows to distinguish between terminating and nonterminating edges and lines. To analyze thick lines and blurred edges the function is also steered in scale.
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Publikationstyp Artikel: Journalartikel
Dokumenttyp Wissenschaftlicher Artikel
Sprache englisch
Veröffentlichungsjahr 1994
HGF-Berichtsjahr 0
ISSN (print) / ISBN 0277-786X
e-ISSN 1996-756X
Zeitschrift Proceedings of SPIE
Quellenangaben Band: 2093, Heft: , Seiten: 450-461 Artikelnummer: , Supplement: ,
Verlag SPIE
Begutachtungsstatus Peer reviewed
Institut(e) Department for Medical Information Systems (MEDIS)
Scopus ID 0028733747
Erfassungsdatum 1994-12-30