RECOGNITION OF TEXT WITH KNOWN GEOMETRIC AND GRAMMATICAL STRUCTURE

Jan Rathouský, Martin Urban, Vojtěch Franc

2008

Abstract

The optical character recognition (OCR) module is a fundamental part of each automated text processing system. The OCR module translates an input image with a text line into a string of symbols. In many applications (e.g. license plate recognition) the text has some a priori known geometric and grammatical structure. This article proposes an OCR method exploiting this knowledge which restricts the set of possible strings to a limited set of feasible combinations. The recognition task is formulated as maximization of a similarity function which uses character templates as reference. These templates are estimated by a support vector machine method from a set of examples. In contrast to the common approach, the proposed method performs character segmentation and recognition simultaneously. The method was successfully evaluated in a car license plate recognition system.

Paper Citation

in Harvard Style

Rathouský J., Urban M. and Franc V. (2008). RECOGNITION OF TEXT WITH KNOWN GEOMETRIC AND GRAMMATICAL STRUCTURE . In Proceedings of the Third International Conference on Computer Vision Theory and Applications - Volume 1: VISAPP, (VISIGRAPP 2008) ISBN 978-989-8111-21-0, pages 194-199. DOI: 10.5220/0001086501940199

in Bibtex Style

@conference{visapp08,
author={Jan Rathouský and Martin Urban and Vojtěch Franc},
title={RECOGNITION OF TEXT WITH KNOWN GEOMETRIC AND GRAMMATICAL STRUCTURE},
booktitle={Proceedings of the Third International Conference on Computer Vision Theory and Applications - Volume 1: VISAPP, (VISIGRAPP 2008)},
year={2008},
pages={194-199},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0001086501940199},
isbn={978-989-8111-21-0},
}

in EndNote Style

TY - CONF
JO - Proceedings of the Third International Conference on Computer Vision Theory and Applications - Volume 1: VISAPP, (VISIGRAPP 2008)
TI - RECOGNITION OF TEXT WITH KNOWN GEOMETRIC AND GRAMMATICAL STRUCTURE
SN - 978-989-8111-21-0
AU - Rathouský J.
AU - Urban M.
AU - Franc V.
PY - 2008
SP - 194
EP - 199
DO - 10.5220/0001086501940199