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Article Details

Copyright Statement: This is an open access article licensed under a Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, even commercially as long as the original work is properly cited.

Deep Wavelet Neural Network based Robust Text Recognition for Overlapping Characters

Author 1: Neha Tripathi
Author 2: Pushpinder Singh Patheja

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Digital Object Identifier (DOI) : 10.14569/IJACSA.2021.0120258

Article Published in International Journal of Advanced Computer Science and Applications(IJACSA), Volume 12 Issue 2, 2021.

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Abstract: This paper presents a deep learning based intelligent text recognition system with touching and overlapped characters. The robustness and effectiveness in the proposed model are enhanced through the modified configuration of neural network known as Deep Wavelet Neural Network (DWNN). The capability of deep learning networks to learn efficiently from an unlabeled dataset has attracted the attention of many researchers over the last decade. However, the performance of these networks is subject to the quality of the dataset and invariant image representation. Numerous optical character recognition techniques have also been presented in the recent years, but the overlapped and touching characters have not been addressed much. The nonlinear and uncertain representation of image data in case of overlapped text adds severe complexity in the process of feature extraction and respective learning. The proposed architecture of DWNN uses fast decaying wavelet functions as activation function in place of conventional sigmoid function to cope up with the uncertainties and nonlinearity of the data representation in overlapped text images. It comprises of cascaded layered architecture of translated and dilated versions of wavelets as activation functions for the training and feature extraction at multiple levels. The local transformation and deformation variation in the visual data has also been taken care efficiently through the modified architecture of DWNN. Comprehensive experimental analysis has been performed over various test images to verify the effectiveness of the proposed text recognition system. The performance of the proposed method is assessed with the help of the metrics, namely, estimation error, cost function and accuracy. The proposed approach will be implemented in MATLAB.

Keywords: Text recognition; overlapped characters; deep wavelet neural network; feature extraction; segmentation; basis function; optical character recognition

Neha Tripathi and Pushpinder Singh Patheja, “Deep Wavelet Neural Network based Robust Text Recognition for Overlapping Characters” International Journal of Advanced Computer Science and Applications(IJACSA), 12(2), 2021. http://dx.doi.org/10.14569/IJACSA.2021.0120258

@article{Tripathi2021,
title = {Deep Wavelet Neural Network based Robust Text Recognition for Overlapping Characters},
journal = {International Journal of Advanced Computer Science and Applications},
doi = {10.14569/IJACSA.2021.0120258},
url = {http://dx.doi.org/10.14569/IJACSA.2021.0120258},
year = {2021},
publisher = {The Science and Information Organization},
volume = {12},
number = {2},
author = {Neha Tripathi and Pushpinder Singh Patheja}
}


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