Image analysis – Histogram processing – For setting a threshold
Patent
1984-05-25
1987-01-13
Kreitman, Stephen A.
Image analysis
Histogram processing
For setting a threshold
382 6, G06K 900
Patent
active
046370552
ABSTRACT:
A pattern recognition system which produces from any object a diffraction pattern-typically an optical Fourier transform of the object, on a high resolution detector. Different points in the detector can be addressed by a scanning device to produce an electrical signal which can be digitized if required before being processed and compared with reference signals in a processor. A reduction in the formation to be scanned and pattern matched is obtained by using an optical Fourier transform or the like of the original object. A further reduction in the information needed to classify each of a known group of objects is obtained by a method which involves the presentation of each of the group members to the apparatus, the computation from each scanning of a discriminant function by multivariate analysis of the signal produced by the scanning and the use of the discriminant function to determine the points in the scanning of subsequent unknown members of the group which are required (and the weighting to be attributed to the signal at each such point) to allow for the reliable classification of each such unknown member of the group.
REFERENCES:
patent: 4139303 (1979-02-01), Carlson et al.
patent: 4150360 (1979-04-01), Kopp et al.
B. J. Thompson, "Hybrid Processing Systems--An Assessment", Proceedings of the IEEE, vol. 65, No. 1, pp. 62-76, Jan. 1977.
B. Braunecker et al., "Hybrid Image Processing", Photo. Science and Engineering, vol. 21, No. 5, pp. 278-281, Sep./Oct. 1977.
Kreitman Stephen A.
PA Consulting Services Limited
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