Moment invariants for recognizing symmetric objects

Authors:
Jan Flusser;Tomáš Suk
Affiliations:
Institute of Information Theory and Automation, Academy of Sciences of the Czech Republic, Prague 8, Czech Republic;Institute of Information Theory and Automation, Academy of Sciences of the Czech Republic, Prague 8, Czech Republic
Venue:
CAIP'05 Proceedings of the 11th international conference on Computer Analysis of Images and Patterns
Year:
2005

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Abstract

A new kind of rotation moment invariants suitable for recognition of symmetric objects is presented. They are composed of complex moments of the image and their invariance to rotation is achieved by multiplicative phase cancellation. Unlike earlier moment invariants they explicitly consider the degree of symmetry of the objects. Thanks to this, they do not vanish on symmetric objects and are able to recognize them.