JUCS - Journal of Universal Computer Science 14(2): 211-223, doi: 10.3217/jucs-014-02-0211
Metaclasses and Zoning Mechanism Applied to Handwriting Recognition
Cinthia O.A. Freitas‡, Luiz S. Oliveira§, Simone B. K. Aires|, Flávio Bortolozzi¶‡ Catholic University of Paraná, Curitiba, Brazil§ Pontifícia Universidade Católica do Paraná, Curitiba, Brazil| Technological Federal University of Paraná - UTFPR-PG, Brazil¶ OPET College, Brazil
Corresponding author: Cinthia Freitas ( cinthia@ppgia.pucpr.br ) © Cinthia Freitas, Luiz Oliveira, Simone B. K. Aires, Flávio Bortolozzi. This article is freely available under the J.UCS Open Content License. Citation:
Freitas CO.A, Oliveira LS, Aires SBK, Bortolozzi F (2008) Metaclasses and Zoning Mechanism Applied to Handwriting Recognition. JUCS - Journal of Universal Computer Science 14(2): 211-223. https://doi.org/10.3217/jucs-014-02-0211 |  |
Abstract
The contribution of this paper is twofold. First we investigate the use of the confusion matrices in order to get some insight to better define perceptual zoning for character recognition. The features considered in this work are based on concavities/convexities deficiencies, which are obtained by labelling the background pixels of the input image. Four different perceptual zoning (symmetrical and non-symmetrical) are discussed. Experiments show that this mechanism of zoning could be considered as a reasonable alternative to exhaustive search algorithms. The second contribution is a methodology to define metaclasses for the problem of handwritten character recognition. The proposed approach is based on the disagreement among the characters and it uses Euclidean distance computed between the confusion matrices. Through comprehensive experiments we demonstrate that the use of metaclasses can improve the performance of the system.
Keywords
character recognition, zoning mechanism, feature measurement, metaclasses, confusion matrix