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A Lexicon-Driven Handwritten City-Name Recognition Scheme for Indian Postal Automation

Umapada PAL, Kaushik ROY, Fumitaka KIMURA

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Summary :

A lexicon-driven segmentation-recognition scheme on Bangla handwritten city-name recognition is proposed for Indian postal automation. In the proposed scheme, at first, binarization of the input document is done and then to take care of slanted handwriting of different individuals a slant correction technique is performed. Next, due to the script characteristics of Bangla, a water reservoir concept is applied to pre-segment the slant corrected city-names into possible primitive components (characters or its parts). Pre-segmented components of a city-name are then merged into possible characters to get the best city-name using the lexicon information. In order to merge these primitive components into characters and to find optimum character segmentation, dynamic programming (DP) is applied using total likelihood of the characters of a city-name as an objective function. To compute the likelihood of a character, Modified Quadratic Discriminant Function (MQDF) is used. The features used in the MQDF are mainly based on the directional features of the contour points of the components. We tested our system on 84 different Bangla city-names and 94.08% accuracy was obtained from the proposed system.

Publication
IEICE TRANSACTIONS on Information Vol.E92-D No.5 pp.1146-1158
Publication Date
2009/05/01
Publicized
Online ISSN
1745-1361
DOI
10.1587/transinf.E92.D.1146
Type of Manuscript
PAPER
Category
Image Recognition, Computer Vision

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