Off-Line Unconstrained Handwritten Word Recognition

In this paper, we describe our system for writer independent, off-line unconstrained handwritten word recognition. We have developed a new method to automatically determine the parameters of Gabor filters to extract features from slant and tilt corrected images. An algorithm is also developed to translate 2D images to 1D domain. Finally, we propose a modified dynamic programming method with fuzzy theory to recognize words. Our initial experiments have shown promising results.

[1]  Din-Chang Tseng,et al.  Invariant handwritten Chinese character recognition using fuzzy ring data , 1996, Image Vis. Comput..

[2]  Wen-Hsiang Tsai,et al.  Recognizing Handwritten Chinese Characters by Stroke-Segment Matching using an Iteration Scheme , 1991, Int. J. Pattern Recognit. Artif. Intell..

[3]  Yves Lecourtier,et al.  Recognition of handwritten sentences using a restricted lexicon , 1993, Pattern Recognit..

[4]  Richard Buse,et al.  A structural and relational approach to handwritten word recognition , 1997, IEEE Trans. Syst. Man Cybern. Part B.

[5]  Horst Bunke,et al.  Off-line cursive handwriting recognition using hidden markov models , 1995, Pattern Recognit..

[6]  Sargur N. Srihari,et al.  Off-Line Cursive Script Word Recognition , 1989, IEEE Trans. Pattern Anal. Mach. Intell..

[7]  Theodosios Pavlidis,et al.  Direct Gray-Scale Extraction of Features for Character Recognition , 1993, IEEE Trans. Pattern Anal. Mach. Intell..

[8]  Mou-Yen Cheii,et al.  Variable Duration Hidden Markov Model and Morphological Segmentation for Handwritten Word Recognition , 1993 .

[9]  William E. Higgins,et al.  Efficient Gabor filter design for texture segmentation , 1996, Pattern Recognit..

[10]  Paul D. Gader,et al.  Handwritten Word Recognition Using Segmentation-Free Hidden Markov Modeling and Segmentation-Based Dynamic Programming Techniques , 1996, IEEE Trans. Pattern Anal. Mach. Intell..

[11]  Nobuyuki Otsu,et al.  ATlreshold Selection Method fromGray-Level Histograms , 1979 .

[12]  Tai Sing Lee,et al.  Image Representation Using 2D Gabor Wavelets , 1996, IEEE Trans. Pattern Anal. Mach. Intell..

[13]  I. S. I. Abuhaiba,et al.  A fuzzy graph theoretic approach to recognize the totally unconstrained handwritten numerals , 1993, Pattern Recognit..

[14]  Ching Y. Suen,et al.  Thinning Methodologies - A Comprehensive Survey , 1992, IEEE Trans. Pattern Anal. Mach. Intell..

[15]  J.-C. Simon,et al.  Off-line cursive word recognition , 1992, Proc. IEEE.

[16]  Dennis Gabor,et al.  Theory of communication , 1946 .

[17]  J. Daugman Uncertainty relation for resolution in space, spatial frequency, and orientation optimized by two-dimensional visual cortical filters. , 1985, Journal of the Optical Society of America. A, Optics and image science.

[18]  C. von der Malsburg,et al.  Improving object recognition by transforming Gabor filter responses. , 1996, Network.

[19]  William T. Rhodes,et al.  Optoelectronic image processor for multiresolution Gabor filtering , 1996, 1996 IEEE International Conference on Acoustics, Speech, and Signal Processing Conference Proceedings.

[20]  Roberto Cipolla,et al.  Skeletonization using an extended Euclidean distance transform , 1995, Image Vis. Comput..

[21]  Ching Y. Suen,et al.  Computer recognition of unconstrained handwritten numerals , 1992, Proc. IEEE.

[22]  Olivier Baret,et al.  Cursive Word Recognition: Methods and Strategies , 1994 .

[23]  J. Mendel Fuzzy logic systems for engineering: a tutorial , 1995, Proc. IEEE.

[24]  Toby Berger,et al.  Reliable On-Line Human Signature Verification Systems , 1996, IEEE Trans. Pattern Anal. Mach. Intell..

[25]  Fang-Hsuan Cheng,et al.  Parallel algorithm for corner finding on digital curves , 1988, Pattern Recognit. Lett..

[26]  Jian Zhou,et al.  Off-Line Handwritten Word Recognition Using a Hidden Markov Model Type Stochastic Network , 1994, IEEE Trans. Pattern Anal. Mach. Intell..