NDLI: Nonuniform slant correction using dynamic programming

Content Provider	IEEE Xplore Digital Library
Author	Uchida, S. Taira, E. Sakoe, H.
Copyright Year	2001
Description	Author affiliation: Fac. of Inf. Sci. & Electr. Eng., Kyushu Univ., Fukuoka, Japan (Uchida, S.)
Abstract	Slant correction is an indispensable technique for handwritten word recognition systems. Conventional slant correction techniques estimate the average slant angle of component characters and then correct the slant uniformly. Thus these conventional techniques will perform successfully under the assumption that each word is written with a constant slant. However, it is more widely acceptable assumption that the slant angle fluctuates during writing a word. In this paper, a nonuniform slant correction technique is presented where the slant correction problem is formulated as an optimal estimation problem of local slant angles at all horizontal positions. The optimal estimation is governed by a criterion function and several constraints for the global and local validity of the local angles. The optimal local slant angles which maximize the criterion satisfying the constraints are searched for efficiently by a dynamic programming based algorithm. Experimental results show the advantageous characteristics of the present technique over the uniform slant correction techniques.
Sponsorship	IAPR
Starting Page	434
Ending Page	438
File Size	456867
Page Count	5
File Format	PDF
ISBN	0769512631
DOI	10.1109/ICDAR.2001.953827
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2001-09-13
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Dynamic programming Character recognition Shape Writing Pattern recognition Information science Handwriting recognition Pattern analysis Histograms Statistics
Content Type	Text
Resource Type	Article

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