Image analysis – Pattern recognition – On-line recognition of handwritten characters
Patent
1992-04-06
1995-08-15
Boudreau, Leo H.
Image analysis
Pattern recognition
On-line recognition of handwritten characters
382173, 382156, 382229, G06K 934, G06K 900, G06K 972, G06K 962
Patent
active
054427150
ABSTRACT:
A method and apparatus for performing cursive script recognition is disclosed, wherein a cursive word, in the form of digitized data or bitmap, is simultaneously segmented and individual characters of the word are recognized using a scanning window that moves across a word field or segment. The bitmap data is preprocessed before being presented to a moving window letter center finding neural network that determines the spatial location of the centers of individual letters. Character center data generated by the center finding neural network is then used to define the left and right edges of a fixed size window. The fixed window contains width normalized word segments that are presented to a second neural network which is taught to recognize the central character of the window based on portions of adjacent characters contained within the window. A final character recognition decision is made using a third neural network that combines the results of second neural network at three positions, namely, when the character to be recognized was in a precharacter position, a central position and a post character position relative to the third neural network.
REFERENCES:
patent: 3111646 (1963-11-01), Harmon
patent: 3127588 (1964-03-01), Harmon
patent: 3133266 (1964-05-01), Frishkopf
patent: 4024500 (1977-05-01), Herbst et al.
patent: 4028674 (1977-06-01), Chuang
patent: 4654873 (1987-03-01), Fujisawa et al.
patent: 4731857 (1988-03-01), Tappert
patent: 4764972 (1988-08-01), Yoshida et al.
patent: 4876726 (1989-10-01), Capello et al.
patent: 4933977 (1990-06-01), Ohnishi et al.
patent: 5048097 (1991-09-01), Gaborski et al.
patent: 5052043 (1991-09-01), Gaborski
patent: 5245672 (1993-09-01), Wilson et al.
"The State of the Art in On-Line Handwriting Recognition", Tappert et al., IEEE Transaction on Pattern Analysis and Machine Intelligence, vol. 12, No. 8, Aug. 1990, pp. 787-808.
Digital Image Processing, by Pratt, Second Edition, Wiley, 1991, pp. 458-472.
"A Multi-Level Perception Approach to Reading Cursive Script", S. Srihari and R. Bozinovic, Artificial Intelligence, Elsevier Science Publishers B.V. (North-Holland), vol. 33, 1987, pp. 217-255.
"Limited Vocabulary Script Reader", E. T. Smithline, IBM Technical Disclosure Bulletin, vol. 7, No. 6, Nov. 1984.
"Recognition of Handwritten Word: First and Second Order Hidden Markov Model Based Approach", Kundu et al., Pattern Recognition, vol. 22, No. 3, 1989, pp. 283-297.
"Computer Recognition of Arabic Cursive Scripts", El-Sheikh et al., Pattern Recognition, vol. 21, No. 4, 1988, pp. 293-302.
"Experiments in the Contextual Recognition of Cursive Script", IEEE Transactions on Computers, vol., C-24, No. 2, Feb. 1975, pp. 182-194.
Pattern Recognition, vol. 20, No. 5, 1987; Elmsford, N.Y.; pp. 475-485; R. M. Sinha "Rule based contextual post-processing for devanagari text recognition".
Pattern Recognition, vol. 23, No. 12, 1990, Elmsford, N.Y.; pp. 1311-1321; K. T. Lua et al "Recognizing chinese characters through interactive activation and competition".
Barski Lori L.
Gaborski Roger S.
Arndt Dennis R.
Bella Matthew C.
Boudreau Leo H.
Eastman Kodak Company
LandOfFree
Method and apparatus for cursive script recognition does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for cursive script recognition, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for cursive script recognition will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2189455