Persian Printed Numeral Characters Recognition Using Geometrical Central Moments and Fuzzy Min-Max Neural Network

In this paper, a new proposed system for Persian printed numeral characters recognition with emphasis on representation and recognition stages is introduced. For the first time, in Persian optical character recognition, geometrical central moments as character image descriptor and fuzzy min-max neural network for Persian numeral character recognition has been used. Set of different experiments on binary images of regular, translated, rotated and scaled Persian numeral characters has been done and variety of results has been presented. The best result was 99.16% correct recognition demonstrating geometrical central moments and fuzzy min-max neural network are adequate for Persian printed numeral character recognition.




References:
[1] A. Darvish, E. Kabir, and H. Khosravi, "Application of Shape Matching
in Persian Handwritten Digits Recognition," Modares Technology and
Eng., vol. 22, pp. 37-47, Dec 2005.
[2] H. Ketabdar, "Persian Handwritten Digits Recognition with Structural
Approach," in Proc. 6th Iranian Conf. on Electrical Engineering, Tehran,
1998, pp. 4.19-4.24.
[3] V. Johari and M. Razavi, "Fuzzy Recognition of Persian Handwritten
Digits," in Proc. 1st Iranian Conf. on Machine Vision and Image
Processing, Birjand, 2001, pp. 144-151.
[4] H. Mozafari, F. Rahgozar, and Sh. Sharif, "Online Recognition of
Persian Handwritten Digits," in Proc. 2nd Computer Society of Iran
Annu. Conf., Tehran, 1996, pp. 196-204.
[5] N. Sadati, E. Sheikhi, and B. Nazari, "Utilizing Fuzzy Logic in
Recognition of Persian Handwritten Digits," in Proc. 3rd Iranian Conf.
on Electrical Engineering, Tehran, 1995, pp. 241-248.
[6] K. Faez, E. Khotanzad, and M. H. Shiralishahreza, "Recognition of
Persian Handwritten Letters and Digits Using Pseudo-Zernike Moments
and Neural Networks," in Proc. 3rd Iranian Conf. on Electrical
Engineering, Tehran, 1995, pp. 231-240.
[7] H. Nabavi, H. Sadoughi, E. Kabir, and Karlos, "Improvement of Persian
Handwritten Digits Recognition Using Composition of Classifiers with
ANFIS," in Proc. 5th Iranian Conf. on Fuzzy Systems, Tehran, 2004, pp.
337-345.
[8] K. Masrori and V. Pourmohseni, "Recognition of Persian Handwritten
Digits Using DWT Algorithm," in Proc. 4th Nat. Computer Society of
Iran Annu. Conf., Tehran, 1998, pp. 1-7.
[9] L. C. Liu and C. Y. Suen, "A new benchmark on the recognition of
handwritten Bangla and Farsi numeral characters," Pattern Recognition,
to be published.
[10] A. Harifi and A. Aghagolzadeh, "A New Pattern for Handwritten
Persian/Arabic digit Recognition," Proc. of World Academy of Sci.,
Eng. and Technology, vol. 3, pp. 130-133, Jan. 2005.
[11] S. Mozaffari, K. Faez, and M. Ziaratban, "A Hybrid Structural/Statistical
Classifier for Handwritten Farsi/Arabic Numeral Recognition," in IAPR
Conf. on Machine Vision Application, Tsukuba, 2005, pp. 218-221.
[12] A. Mowlaei and K. Faez, "Recognition of Isolated Handwritten
Persian/Arabic Characters and Numerals Using Support Vector
Machine," IEEE XIII Workshop on Neural Networks for Signal
Processing, 2003, pp. 547-554.
[13] J. Sadri, C. Y. Suen, and T. D. Bui, "Application of Support Vector
Machines for Recognition of Handwritten Arabic/Persian Digits," in
Proc. 2nd Conf. on Machine Vision and Image Processing, Tehran, 2003,
pp. 300-307.
[14] H. Khosravi and E. Kabir, "Introducing a very large dataset of
handwritten Farsi digits and a study on their varieties," Pattern
Recognition Lett., vol. 28, pp. 1133-1141, Dec. 2007.
[15] F. Soleimanipour, J. Sadri, and C. Y. Suen, "Standard Databases for
Recognition of Handwritten Digits, Numerical Strings, Legal Amounts,
Letters and Dates in Farsi Language," in Proc. 10th Int. Workshop on
Frontiers of Handwritten Recognition, La baule, 2006, pp. 3-7.
[16] S. Mozaffari, K. Faez, F. Faradji, M. Ziaratban, and S. M. Golzan, "A
Comprehensive Isolated Farsi/Arabic Character Database for
Handwritten OCR Research," in Proc. 10th Int. Workshop on Frontiers of
Handwritten Recognition, La baule, 2006, pp. 379-384.
[17] H. Ebrahimnezhad and Gh. Montazer, "Presenting Improved Fuzzy
Approach for Persian Numeral Fonts Using Entropy Function," in Proc.
11th Nat. Computer Society of Iran Conf., Tehran, 2006, pp. 883-889.
[18] H. Ebrahimnezhad, Gh. A. Montazer, and N. Jafari, "Recognition of
Persian Numeral Fonts by Combining the Entropy Minimized Fuzzifier
and Fuzzy Grammar," in Proc. 6th PWASET Int. Conf. on Artificial
Intelligence, Knowledge Engineering and Data Bases, Corfu Island,
2007, pp. 22-27.
[19] M. K. Hu, "Visual Pattern Recognition by Moment Invariant," IRE
Trans. Info. Theory, vol. IT - 8, pp. 179-187, Feb 1962.
[20] M. M. Gupta, L. Jin, and N. Homma, Static and Dynamic Neural
Networks: From Fundamentals to Advance theory, New Jersey: John
Wiley & Sons Inc., 2003.
[21] P. K. Simpson, "Fuzzy Min-Max Neural Networks- Part1:
Classification," IEEE Trans. Neural Netw., vol. 3, no. 5, pp. 776-786,
Sep. 1992.
[22] P. K. Simpson, "Fuzzy Min-Max Neural Networks- Part2: Clustering,"
IEEE Trans. Fuzzy Syst., vol. 1, no. 1, pp. 32-45, Feb. 1993.
[23] H. R. Boveiri, "Scanned Persian Printed Text Characters Recognition
Using Fuzzy-Neural Networks," M. S. thesis, Islamic Azad Univ.
Science and Research Branch, Ahvaz, 2009.
[24] C. R. Gonzalez and E. R. Woods, Digital Image Processing, 2nd Ed.,
New Jersey: Prentice-Hall Inc., 2002.
[25] A. Khotanzad and J-H. Lu, "Classification of Invariant Image
Representations using a Neural Networks," IEEE Trans. on Acoust.,
Speech and Signal Process., vol. 38, no. 6, pp. 1028-1038, Jun. 1990.