Offline Computer-Synthesized Font Character Recognition Using Machine Learning Approaches

The topic of offline character recognition has long been an interesting issue in the field of pattern recognition. Several experiments have shown that the Neural Network works better in image recognition. The core intention of this paper is to incorporate an efficient and reliable technique for offline computer-generated Latin font recognition. The framework uses several machine learning approaches, such as Support for vector machines (SVM), Random Forest (RF), Recurrent Neural Network (RNN), and Convolutional Neural Network (CNN), like standard classifiers for the recognition. This study compares the performance of these approaches on a benchmark dataset Chars74k with the help of three features extraction techniques. Results show that the deep neural network CNN classifier outperforms the rest without sacrificing performance. The results of these experiments are displayed in various tables and evaluated with the aid of a few evaluation metrics. There are few graphical representations where the rise in the recognition can be confirmed concerning the epoch.

[1]  John F. Canny,et al.  A Computational Approach to Edge Detection , 1986, IEEE Transactions on Pattern Analysis and Machine Intelligence.

[2]  Ching Y. Suen,et al.  Thinning Methodologies - A Comprehensive Survey , 1992, IEEE Trans. Pattern Anal. Mach. Intell..

[3]  D. Gorgevik,et al.  Handwritten Digit Recognition by Combining SVM Classifiers , 2005, EUROCON 2005 - The International Conference on "Computer as a Tool".

[4]  Dian Felita Tanoto,et al.  Comparison Between Neural Network and Support Vector Machine in Optical Character Recognition , 2017, ICCSCI.

[5]  George Panoutsos,et al.  Interpretable Machine Learning: Convolutional Neural Networks with RBF Fuzzy Logic Classification Rules , 2018, 2018 International Conference on Intelligent Systems (IS).

[6]  Manik Varma,et al.  Character Recognition in Natural Images , 2009, VISAPP.

[7]  Mei Xie,et al.  A New Method for License Plate Characters Recognition Based on Sliding Window Search , 2013, 2013 IEEE 11th International Conference on Dependable, Autonomic and Secure Computing.

[8]  Riyanto Sigit,et al.  Feature extraction of character image using shape energy , 2016, 2016 International Electronics Symposium (IES).

[9]  Mita Nasipuri,et al.  Handwritten Digit Recognition using DAISY Descriptor: A Study , 2018, 2018 Fifth International Conference on Emerging Applications of Information Technology (EAIT).

[10]  Laurent Heutte,et al.  Using Random Forests for Handwritten Digit Recognition , 2007 .

[11]  Munish Kumar,et al.  Performance evaluation of classifiers for the recognition of offline handwritten Gurmukhi characters and numerals: a study , 2019, Artificial Intelligence Review.

[12]  Håkan Grahn,et al.  ARDIS: a Swedish historical handwritten digit dataset , 2019, Neural Computing and Applications.

[13]  N. Otsu A threshold selection method from gray level histograms , 1979 .

[14]  Amit Choudhary,et al.  A New Character Segmentation Approach for Off-Line Cursive Handwritten Words , 2013, ITQM.

[15]  Hermann Ney,et al.  Fast and Robust Training of Recurrent Neural Networks for Offline Handwriting Recognition , 2014, 2014 14th International Conference on Frontiers in Handwriting Recognition.

[16]  A K Sampath,et al.  Fuzzy-based multi-kernel spherical support vector machine for effective handwritten character recognition , 2017 .

[17]  Surbhi Mishra,et al.  Online and offline character recognition: A survey , 2016, 2016 International Conference on Communication and Signal Processing (ICCSP).

[18]  Rakesh Chandra Balabantaray,et al.  A Novel Sliding Window Approach for Offline Handwritten Character Recognition , 2019, 2019 International Conference on Information Technology (ICIT).

[19]  Luís A. Alexandre,et al.  Improving Deep Neural Network Performance by Reusing Features Trained with Transductive Transference , 2014, ICANN.

[20]  Rizwan Ahmed Khan,et al.  Handwritten Optical Character Recognition (OCR): A Comprehensive Systematic Literature Review (SLR) , 2020, IEEE Access.

[21]  Sargur N. Srihari,et al.  Sliding window technique for word recognition , 1995, Electronic Imaging.

[22]  Hashim Habiballa,et al.  Recognition of damaged letters based on mathematical fuzzy logic analysis , 2015, J. Appl. Log..