Scientific Journal of Informatics
Vol 10, No 3 (2023): August 2023

Capital Optical Character Recognition Using Neural Network Based on Gaussian Filter

Erna Zuni Astuti (Department of Informatics Engineering, Universitas Dian Nuswantoro, Indonesia)
Christy Atika Sari (Department of Informatics Engineering, Universitas Dian Nuswantoro, Indonesia)
Mutiara Syabilla (Department of Informatics Engineering, Universitas Dian Nuswantoro, Indonesia)
Hendra Sutrisno (Department of Informatics Engineering, Universitas Dian Nuswantoro, Indonesia)
Eko Hari Rachmawanto (Department of Informatics Engineering, Universitas Dian Nuswantoro, Indonesia)
Mohamed Doheir (Department of Computer Science, University Geomatrika, Malaysia)



Article Info

Publish Date
11 Jul 2023

Abstract

Purpose: As digital technology advances, society needs to convert physical text into digital text. There are now many methods available for doing this. One of them is OCR (Optical Character Recognition), which can scan images [1]–[4] containing writing and turn them into digital text, making it easier to copy written text from an image. Text recognition in images is complex due to variations in text size, color, font, orientation, background, and lighting conditions.Methods: The technique of text recognition or optical character recognition (OCR) in images can be done using several methods, one of which is a neural network or artificial neural network. The artificial neural network method can help a computer make intelligent decisions with limited human assistance. Intelligent decisions can be made because the neural network can learn and model the relationship between nonlinear and complex input and output data. In this research, the scaled conjugated gradient is applied for optimization. SCG is very effective in finding the minimum value of a complex function, but it takes longer than some other optimization algorithms.Result/Findings: The dataset used is an image with a size of 28 x 28 which is changed in dimension to 784 x 1. This research uses 4000 epochs and obtained the best validation result at epoch 3506 with a value of 0.0087446. Results: From the statistical test results, the effect of perceived usefulness on ease of use has the highest level of influence, obtaining a test value of 3.6. Furthermore, the effect of the attitude towards using on the behavioral intention to use has the lowest level of influence, which obtained a test value of 1.2.Novelty:  In this article, Gaussian filter is used as feature extraction to improve yield. Character detection results using a Gaussian filter are known to be almost 10% higher than those using only a neural network. The result with the Neural Network alone is 82.2%, while the Neural Network-Gaussian Filter produces 92.1%.

Copyrights © 2023






Journal Info

Abbrev

SJI

Publisher

Subject

Computer Science & IT

Description

Scientific Journal of Informatics published by the Department of Computer Science, Semarang State University, a scientific journal of Information Systems and Information Technology which includes scholarly writings on pure research and applied research in the field of information systems and ...