Image analysis – Histogram processing – For setting a threshold
Patent
1984-01-25
1986-12-09
Boudreau, Leo H.
Image analysis
Histogram processing
For setting a threshold
382 30, G06K 962
Patent
active
046285334
ABSTRACT:
In the particular embodiment of the invention described in the specification, a pattern recognition apparatus converts the signals received from a video pattern detector into a bit matrix comprising columns and rows of character elements. The matrix is divided into a series of blocks and the pressence of horizontal or vertical strings of bits is compared with corresponding bit information relating to a set of known characters. An unknown character is identified by a minimum deviation of the compared block information from that of a corresponding known character.
REFERENCES:
patent: 3104372 (1963-09-01), Rabinow et al.
patent: 3178688 (1965-04-01), Hill et al.
patent: 3576534 (1971-04-01), Steinberger
patent: 3601802 (1971-08-01), Nakagome et al.
patent: 3618016 (1971-11-01), Steenis
patent: 3713099 (1973-01-01), Hemstreet
patent: 3846754 (1974-11-01), Oka et al.
patent: 4027284 (1977-05-01), Hoshino et al.
patent: 4110737 (1978-08-01), Fahey
patent: 4162482 (1979-07-01), Su
patent: 4183013 (1980-01-01), Agrawala et al.
patent: 4288782 (1981-09-01), Bader et al.
patent: 4371865 (1983-02-01), Moulton
patent: 4398256 (1983-08-01), Nussmeier et al.
"Automatic Visual Sorting Method of Compressors with Stamped Marks" by A. Komura & K. Edamatsu, 1980 IEEE pp. 245-247.
"A Fast Interval Processor" by G. A. Shippey, R. J. H. Bayley, A. S. J. Farrow, D. R. Rutovitz and J. H. Tucker, MRC Clinical and Population Cytogenetics Unit, Edinburgh, U.K. (received for publication Dec. 22, 1980), Pattern Recognition vol. 14, Nos. 1-6, pp. 345-365, 1981).
"Portable Scanner Reads Handwritten Letters and Figures" by Douglas Glucroft, McGraw-Hill World News, Electronics/Apr. 7, 1981.
"Application of Random Pattern Recognition Technique to Quantative Evaluation of Automatic Visual Inspection Algorithms" by K. Edamatsu, A. Komuro and Y. Nitta, 1982 IEEE, pp. 139-143.
"Stamped Character Inspection Apparatus Based on the Bit Matrix Method" by Y. Hongo and A. Komuro, 1982 IEEE, pp. 448-450.
"Digital Pattern Recognition by Moments", in Optical Character Recognition by F. L. Alt edited by G. L. Fisher et al., Spartan Books, 1962, pp. 153-179.
"The RCA Multi-Font Reading Machine", i.b.i.d., pp. 3-14, by W. J. Hannan Radio Corporation of America, Defense Electronics Products.
"Electronics International-Portable Scanner Reads Handwritten Letters and Figures", by Douglas Glucroft, Mc-Hill World News, (Electronics, Apr. 7, 1981, pp. 81-82.)
Hongo Yasuo
Nitta Yoshio
Boudreau Leo H.
Fuji Electric & Co., Ltd.
LandOfFree
Pattern recognition apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Pattern recognition apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pattern recognition apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1390142