A Theory of Character Recognition by Pattern Matching Method

  • Taizo Iijima
  • Hiroshi Genchi
  • Ken-ichi Mori


Character recognition is a categorizing process of unknown input pattern into one of known finite number of character categories. Various practical methods of realizing this process has been devised. Pattern matching method is one of the most commonly used techniques in which the similarity of input pattern is tested with the reference pattern of each category.


Similarity Measure Input Pattern Character Recognition Category Class Reference Pattern 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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  1. (1).
    W.J. Hannan, “The RCA Multi-font Reading Machine.” Optical Character Recognition, Spartan Books, 1962, pp 3–14.Google Scholar
  2. (2).
    J.R. Parks, “Automatic Recognition of Low-quality Printed Characters using Analogue Techniques,” Proc. of Inst. Radio, Engrs. Vol. 55, pp 67–80, Aug. 1967.Google Scholar
  3. (3).
    T. Iijima, “Basic Equation of Figure and Observational Transformation” Systems, Computers & Controls, Vol 2, No. 4, pp 70–77, 1971.Google Scholar
  4. (4).
    T. Iijima, “Basic Theory on Feature Extraction for Figures,” Systems, Computers & Controls, Vol. 3, No. 1, pp 32–39, 1971.Google Scholar
  5. (5).
    T. Iijima, “Basic Theory on the Structural Recognition of Figure,” Trans. IECE, Vol. 55-D, No 8, pp 499–506, 1972 (in Japanese).Google Scholar
  6. (6).
    T. Iijima, H. Genchi and K. Mori, “A Theoretical Study of the Pattern Identification by Matching Method,” Proc. of First USA-JAPAN Computer Conference, pp 42–48, Oct. 1972.Google Scholar
  7. (7).
    T. Iijima and K. Mori, “A New Generation of OCR-ASPET/71,” J. Of Nikkei Electronics, No. 30, pp 66–80, May, 1972 (in Japanese).Google Scholar

Copyright information

© Plenum Press, New York 1974

Authors and Affiliations

  • Taizo Iijima
    • 1
  • Hiroshi Genchi
    • 2
  • Ken-ichi Mori
    • 2
  1. 1.Tokyo Inst. of Tech.TokyoJapan
  2. 2.Toshiba Research and Devel. Ctr.KawasakiJapan

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