A Robust Coin Recognition Method with Rotation Invariance

Author

Thumwarin, P. ; Malila, S. ; Janthawong, P. ; Pibulwej, W. ; Matsuura, T.

Author_Institution

Dept. of Commun. & Inf. Technol., King Mongkut´´s Inst. of Technol., Bangkok

Volume

1

fYear

2006

fDate

25-28 June 2006

Firstpage

520

Lastpage

523

Abstract

This paper presents a robust coin recognition method with rotation invariance. The rotation invariance feature is represented by the absolute value of Fourier coefficients of polar image of coin on circles with different radii. The absolute value of Fourier coefficients is considered as the individual feature of the particular coin. Moreover, in this paper, the variations on surface of coin such as light reflection effect, are taken into account. Such variations effect can be reduced using the Fourier approximation of the coin image. Finally, coin can be recognized by the distance between the absolute value of Fourier coefficients obtained from the reference coin and the coin to be recognized. The coin recognition experiments are given to show the effectiveness of the proposed method

Keywords

Fourier transforms; approximation theory; feature extraction; object recognition; Fourier approximation; Fourier coefficients; coin recognition method; coin surface variation; polar coin image; rotation invariance feature; Digital cameras; Feature extraction; Image recognition; Information technology; Optical reflection; Pattern recognition; Robustness; Seals; Shape;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, Circuits and Systems Proceedings, 2006 International Conference on

Conference_Location

Guilin

Print_ISBN

0-7803-9584-0

Electronic_ISBN

0-7803-9585-9

Type

conf

DOI

10.1109/ICCCAS.2006.284690

Filename

4063934