Title :
Seal imprint verification with rotation invariance
Author :
Matsuura, Takenobu ; Yamazaki, Kenta
Author_Institution :
Dept. of Commun. Eng., Tokai Univ., Hiratsuka, Japan
Abstract :
This work discusses on a seal imprint verification method with rotation invariance. The rotation invariant feature is represented here by the coefficients of 2D Fourier series expansion of the log-polar image. Seal imprint can be verified by the eigen vector corresponding to the largest eigen value of a matrix defined in terms of the above Fourier coefficients. The seal imprint verification experiments are given to show the effectiveness of the proposed method.
Keywords :
Fourier transforms; eigenvalues and eigenfunctions; feature extraction; image matching; image thinning; security of data; 2D Fourier series expansion coefficients; eigen vector; log-polar image; matrix eigen value; rotation invariance; rotation invariant feature; seal imprint verification method; Biometrics; Equations; Feature extraction; Fourier series; Humans; Inspection; Pixel; Seals; Skeleton;
Conference_Titel :
Circuits and Systems, 2004. Proceedings. The 2004 IEEE Asia-Pacific Conference on
Print_ISBN :
0-7803-8660-4
DOI :
10.1109/APCCAS.2004.1412833
