Generalized affine moment invariants for object recogn

Authors:
Esa Rahtu;Mikko Salo;Janne Heikkil;Jan Flusser
Affiliations:
Univ. of Oulu, Finland;Univ. of Oulu, Finland;Univ. of Oulu, Finland;Academy of Sciences of the Czech Republic, Prague 8, Czech Republic
Venue:
ICPR '06 Proceedings of the 18th International Conference on Pattern Recognition - Volume 02
Year:
2006

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Abstract

This paper introduces a new way of extracting affine invariant features from image functions. The presented approach is based on combining affine moment invariants (AMI) with multiscale invariants, in particular multiscale autoconvolution (MSA) and spatial multiscale affine invariants (SMA). Our approach includes all of these invariants as special cases, but also makes it possible to construct new ones. According to the performed experiments the introduced features provide discriminating information for affine invariant object classification, clearly outperforming standard AMI, MSA, and SMA.