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- W2003673480 abstract "The optical matched filtering method has need of a laser source, a photographic film or plate of high resolution, a particular optical system for production of the Fourier transform hologram and for coherent spatial filtering technique. On the other hand, though the digital simulation technique for matched pattern recognition has more or less problems in point of detection accuracy of the pattern in comparison with the optical method, we can simply discriminate a special pattern or a character by carrying out the discrete correlation operation, and by introducing the normalized curve for display. In this paper, the authors examine quantitatively the degree of correlation between an original pattern and a detection pattern by means of a densitometer and by plotting a relative intensity curve of special line direction on the correlation diagram. Moreover, they discuss the matched filtering effects of an original pattern with lightness level difference and that of the numbers of sampling points by using the color display device visually." @default.
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- W2003673480 date "1980-01-01" @default.
- W2003673480 modified "2023-09-26" @default.
- W2003673480 title "Pattern recognition by means of optical matched filtering and digital simulation." @default.
- W2003673480 doi "https://doi.org/10.2150/jlve.4.2_32" @default.
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