Abstract
In this paper, we study a method for isolated handwritten or hand-printed character recognition using dynamic programming for matching the non-linear multi-projection profiles that are produced from the Radon transform. The idea is to use dynamic time warping (DTW) algorithm to match corresponding pairs of the Radon features for all possible projections. By using DTW, we can avoid compressing feature matrix into a single vector which may miss information. It can handle character images in different shapes and sizes that are usually happened in natural handwriting in addition to difficulties such as multi-class similarities, deformations and possible defects. Besides, a comprehensive study is made by taking a major set of state-of-the-art shape descriptors over several character and numeral datasets from different scripts such as Roman, Devanagari, Oriya, Bangla and Japanese-Katakana including symbol. For all scripts, the method shows a generic behaviour by providing optimal recognition rates but, with high computational cost.
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Plamondon R, Srihari S N. On-line and off-line handwriting recognition: a comprehensive survey. IEEE Transactions on Pattern Analysis and Machine Intelligence, 2000, 22: 63–84
Arica N, Yarman-Vural F. An overview of character recognition focused on off-line handwriting. IEEE Transactions on Systems, Man, and Cybernetics, Part C: Applications and Reviews, 2001, 31(2): 216–233
Suen C Y, Berthod M, Mori S. Automatic recognition of handprinted characters —the state of the art. Proceedings of the IEEE, 1980, 68(4): 469–487
Schantz H F. The History of OCR. Manchester Center, VT: Recognition Technologies Users Association, 1982
Davis R H, Lyall J. Recognition of handwritten characters — a review. Image and Vision Computing, 1986, 4: 208–218
Govindan V, Shivaprasad A. Character recognition —a review. Pattern Recognition, 1990, 23(7): 671–683
Dai R, Liu C, Xiao B. Chinese character recognition: history, status and prospects. Frontiers of Computer Science, 2007, 1(2): 126–136
Trier D, Jain A K, Taxt T. Feature extraction methods for character recognition — a survey. Pattern Recognition, 1996, 29(4): 641–662
Heutte L, Paquet T, Moreau J V, Lecourtier Y, Olivier C. A structural/statistical feature based vector for handwritten character recognition. Pattern Recognition Letters, 1998, 19(7): 629–641
Foggia P, Sansone C, Tortorella F, Vento M. Combining statistical and structural approaches for handwritten character description. Image and Vision Computing, 1999, 17(9): 701–711
Jain A K, Duin R P W, Mao J. Statistical pattern recognition: a review. IEEE Transactions on Pattern Analysis andMachine Intelligence, 2000, 22(1): 4–37
Shinghal R, Suen C. A method for selecting constrained hand-printed character shapes for machine recognition. IEEE Transactions on Pattern Analysis and Machine Intelligence, 1982, 4(1): 74–78
Mantas J, Heaton A. Handwritten character recognition by parallel labelling and shape analysis. Pattern Recognition Letters, 1983, 1: 465–468
Campos T E, Babu B R, Varma M. Character recognition in natural images. In: Proceedings of the International Conference on Computer Vision Theory and Applications. 2009, 273–280
Mahmoud S A. Arabic character recognition using fourier descriptors and character contour encoding. Pattern Recognition, 1994, 27(6): 815–824
Granlund G H. Fourier preprocessing for hand print character recognition. IEEE Transactions on Computers, 1972, C-21(2): 195–201
Lai M T, Suen C Y. Automatic recognition of characters by fourier descriptors and boundary line encodings. Pattern Recognition, 1981, 14(1–6): 383–393
Rauber T, Steiger Garcao A. Shape description by unl fourier featuresan application to handwritten character recognition. In: Proceedings of the 11th IAPR International Conference on Pattern Recognition Methodology and Systems. 1992, II:466–469
Hopkins J, Andersen T L. A fourier-descriptor-based character recognition engine implemented under the gamera open-source document-processing framework. In: Proceedings of the International Conference on Document Recognition and Retrieval Conference. 2005, 111–118
Bernier T, Landry J A. A new method for representing and matching shapes of natural objects. Pattern Recognition, 2003, 36(8): 1711–1723
Kopf S, Haenselmann T, Effelsberg W. Enhancing curvature scale space features for robust shape classification. In: Proceedings of the IEEE International Conference on Multimedia and Expo. 2005, 478–481
Khoddami M, Behrad A. Farsi and latin script identification using curvature scale space features. In: Proceedings of the Symposium on Neural Network Applications in Electrical Engineering. 2010, 213–217
Belongie S, Malik J, Puzicha J. Shape matching and object recognition using shape contexts. IEEE Transactions on Pattern Analysis and Machine Intelligence, 2002, 24(4): 509–522
Tepper M, Acevedo D, Goussies N A, Jacobo J C, Mejail M. A decision step for shape context matching. In: Proceedings of the IEEE International Conference on Image Processing. 2009, 409–412
Flusser J. On the independence of rotation moment invariants. Pattern Recognition, 2000, 33(9): 1405–1410
Kim W Y, Kim Y S. A region-based shape descriptor using zernike moments. Signal Processing: Image Communication, 2000, 16(1–2): 95–102
Zhang D, Lu G. Shape-based image retrieval using generic fourier descriptor. Signal Processing: Image Communication, 2002, 17: 825–848
Frejlichowski D. Analysis of four polar shape descriptors properties in an exemplary application. In: Proceedings of the International conference on Computer Vision and graphics. 2010, 376–383
Zhang D, Lu G. Review of shape representation and description techniques. Pattern Recognition, 2004, 37(1): 1–19
Tabbone S, Wendling L, Salmon J P. A new shape descriptor defined on the radon transform. Computer Vision and Image Understanding, 2006, 102(1): 42–51
Deans S R. Applications of the Radon Transform. New York: Wiley Interscience Publications, 1983
Kruskall J B, Liberman M. The symmetric time warping algorithm: From continuous to discrete. In: Proceedings of Time Warps, String Edits and Macromolecules: the Theory and Practice of String Comparison. 1983, 125–161
Keogh E J, Pazzani M J. Scaling up dynamic time warping to massive dataset. In: Proceedings of the European Conference on Principles and Practice of Knowledge Discovery in Databases. 1999, 1–11
Coetzer J. Off-line Signature Verification. Dissertation for PhD Degree, University of Stellenbosch, 2005
Jayadevan R, Kolhe S R, Patil P M. Dynamic time warping based static hand printed signature verification. Pattern Recognition Research, 2009, 4(1): 52–65
Santosh K C, Lamiroy B, Wendling L. DTW for matching radon features: a pattern recognition and retrieval method. In: International Conference on Advances Concepts for Intelligent Vision Systems. 2011, 249–260
Santosh K C. Character recognition based on DTW-radon. In: Proceedings of International Conference on Document Analysis and Recognition. 2011, 264–268
Santosh K C, Lamiroy B, Wendling L. DTW-radon-based shape descriptor for pattern recognition. International Journal of Pattern Recognition and Artificial Intelligence, 2013, 27(03): 1350008
Alginahi Y. Preprocessing techniques in character recognition. Character Recognition, 2010, 1–20
Otsu N. A threshold selection method from gray-level histograms. IEEE Transactions on Systems, Man, and Cybernetics, 1979, 9(1): 62–66
Keogh E J. Exact indexing of dynamic time warping. In: Proceedings of the 28th International Conference on Very Large Data Bases. 2002, 406–417
Bhowmik T K, Parui S K, Bhattacharya U, Shaw B. An hmm based recognition scheme for handwritten oriya numerals. In: Proceedings of the International Conference in Information Technology. 2006, 105–110
Bhattacharya U, Chaudhuri B B. Handwritten numeral databases of indian scripts and multistage recognition of mixed numerals. IEEE Transactions on Pattern Analysis and Machine Intelligence, 2009, 31(3): 444–457
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K C Santosh is currently a research fellow at the US National Library of Medicine (NLM), National Institutes of Health (NIH), USA. Before this, K C worked as a postdoctoral research scientist at the Université de Lorraine — LORIA (UMR-7503) Campus Scientifique and ITESOFT, France. He earned his PhD in Computer Science from INRIA Nancy Grand Est, Université de Lorraine, France in 2011, MS in information technology by research and thesis from the school of ICT, SIIT, Thammasat University, Thailand in 2007, and BS in electronics and communication from PU, Nepal, in 2003. His research interests include document image analysis, document information content exploitation, biometrics (such as face) and (bio)medical image analysis.
Laurent Wendling received the PhD in computer science from the University of Paul Sabatier, Toulouse, France in 1997. He received the HDR degree in 2006. From 1993 to 1999, he was with the IRIT in the field of pattern recognition. From 1999 to 2009, he was an assistant professor at the ESIAL Nancy, and a member of LORIA in the field of symbol recognition. His current research topics are spatial relation, feature selection, and image segmentation. He is currently a full professor at the Paris Descartes University, in the field of computer science. He is also the group leader of the SIP team, LIPADE.
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Santosh, K.C., Wendling, L. Character recognition based on non-linear multi-projection profiles measure. Front. Comput. Sci. 9, 678–690 (2015). https://doi.org/10.1007/s11704-015-3400-2
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DOI: https://doi.org/10.1007/s11704-015-3400-2