Offline Handwritten Character Recognition Including Compound Character from Scanned Document
Tawhid Ahmed, Main Uddin, Md. Ashikur Rahman Khan, A. R. Mahamudul Hasan
Asian Journal of Research in Computer Science · pp. 119–129 · Published 19 Nov 2022
10.9734/ajrcos/2022/v14i4297Abstract
Recognizing the handwritten characters and converting them into machine-editable text is very tedious due to the diversity of writing styles and character patterns. Extracting data from images and identifying the characters becomes more complicated when a language consists of compound structures and characters, such as Bengali. There has been a lack of programs for recognizing Bengali scripted basic and com-plex numeric signs and letters with high accuracy. This paper develops a novel approach to extracting and identifying Bengali handwritten primary characters, digits, and primarily used compound characters. In this proposed model, an image containing Bengali handwritten text takes as input and processed. Then processed images are segmented into lines and characters. The features are extracted from segmented characters and recognized using a Convolutional Neural Network (CNN). The CNN obtains 98.23% accuracy in the training dataset and 96.02% in the validation dataset. Apart from that, the proposed model has gained 89.6% precision and 92.6% recall scores on scanned image data.
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