Abstract
An improved shift- and rotational-invariant filter using wavelet transform and circular harmonic filtering at the same time is proposed. Computer simulation has shown that this is better than using a phase-only circular harmonic filter in peak sharpness, discriminating ability, SNR and tolerance of position error of the filter. Furthermore, this filter possesses moderate diffraction efficiency.
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References
Y.N. Hsu, H.H. Arsenault and G. April: Appl. Opt. 21 (1982) 4012.
Y.N. Hsu and H.H. Arsenault: Appl. Opt. 21 (1982) 4016.
H.F. Yau and C.C. Chang: Appl. Opt. 28 (1989) 2070.
J. Rosen and J. Shamir: Appl. Opt. 27 (1988) 2895.
L. Leclerc, Y. Sheng and H.H. Arsenault: Appl. Opt. 28 (1989) 1251.
S.G. Mallat: IEEE Trans. Acoust. Speech Signal Process. 37 (1989) 2091.
X.J. Lu. A. Katz, E.G. Kanterakis, Y. Li, Y. Zhang and N.P. Caviris: Opt. Commun. 92 (1992) 337.
Y. Sheng, D. Roberge. H. Szu and T. Lu: Opt. Lett. 18 (1993) 299.
B. Javidi and Q. Tang: Appl. Opt. 31 (1992) 4034.
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Liang, TC., Cheng, YS. Rotational-InVariant pattern recognition using circular optical wavelet transform. Optical Review 1, 198–201 (1994). https://doi.org/10.1007/BF03254861
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DOI: https://doi.org/10.1007/BF03254861