Jul 2026· Chaos and Fractals· 0 citations· 27 references
TL;DR
This study focuses on enhancing handwritten Devanagari character recognition using deep learning models, specifically fine-tuned Convolutional Neural Networks (CNNs), combined with hybrid mathematical methods for image enhancement, proposing a fuzzy-enabled Power-Law transformation for image enhancement.
Abstract
Handwritten character recognition is vital for document digitization and autonomous reading systems. This study focuses on enhancing handwritten Devanagari character recognition using deep learning models, specifically fine-tuned Convolutional Neural Networks (CNNs), combined with hybrid mathematical methods for image enhancement. Devanagari script, used for several South Asian languages, presents challenges due to its complexity and structural variations. To improve recognition accuracy, we propose a fuzzy-enabled Power-Law transformation for image enhancement, along with other techniques like Grunwald- Letnikov Fractional Differentiation (GLFD) and Atangana-Baleanu-Riemann (ABR). Experimental results show that the CNN model with Power-Law+ Fuzzy enhancement achieves the highest accuracy (98.02%), surpassing even MobileNetV2 (92.86%). The same method also yields impressive performance on the MNIST dataset (99.15% accuracy), demonstrating its effectiveness across different scripts. These findings highlight the benefits of integrating advanced preprocessing with deep learning for improved handwriting recognition, offering practical applications in multilingual document processing and OCR-based automation.
This paper proposes a hybrid deep learning framework for Arabic handwritten digit recognition by optimizing Convolutional Neural Network (CNN) hyperparameters using the Crow Search Algorithm (CSA). Due to the high variability and structural complexity of Arabic handwritten digits, achieving optimal CNN performance requires efficient and automatic hyperparameter tuning. In the proposed approach, CSA is employed to optimize key CNN hyperparameters, including filter size, number of filters, mini-batch size, and learning rate, with the objective of minimizing classification error. The MADBase dataset is used for evaluation, and preprocessing steps such as normalization, image reshaping, one-hot encoding, noise reduction, and data shuffling are applied to enhance training efficiency and model robustness. The CNN architecture is trained using the optimized hyperparameters obtained through CSA iterations. Experimental results show that the proposed CSA-optimized CNN achieves 99% accuracy on the testing set, demonstrating strong generalization capability and stability. The findings confirm that CSA effectively improves CNN performance while eliminating the need for manual hyperparameter tuning, making the framework suitable for other image classification tasks.
Abtisam Abdulelah Salim Azeez· Kufa journal of Engineering· 0 citations
The Handwritten Digit Recognition System is a machine learning and deep learning–based project developed to
accurately identify handwritten numerical digits from input images. The main objective of this project is to recognize digits
ranging from 0 to 9 by using image processing techniques and a Convolutional Neural Network (CNN) model trained on the
MNIST dataset. In this system, the handwritten digit image is first captured and preprocessed through steps such as grayscale
conversion, resizing, normalization, and noise reduction to improve prediction accuracy. The processed image is then passed to
the trained CNN model, which extracts important features and classifies the digit into the corresponding numerical class. The
project uses backpropagation for learning, Adam optimizer for efficient weight optimization, and Softmax activation function in
the output layer for multi-class classification. The trained model provides high accuracy and fast prediction results, making the
system suitable for real-time applications. This project demonstrates the practical implementation of deep learning in image
recognition and can be further extended for applications such as automatic form processing, postal code recognition, and bank
cheque digit identification.
R. Rajesh, P. Sravani· International Journal for Re...· 0 citations
Handwritten Character Recognition (HCR)
is a significant area of research in the field of pattern
recognition and computer vision, aiming to automatically
identify and convert handwritten text into machine
readable digital formats. Traditional recognition methods
often struggle with variations in writing styles, character
shapes, and image quality. To address these challenges, this
research proposes a deep learning-based handwritten
character recognition system that leverages Convolutional
Neural Networks (CNNs) for automatic feature extraction
and classification. The proposed model is trained on a large
dataset of handwritten characters and incorporates
preprocessing techniques such as image normalization,
noise removal, and segmentation to improve recognition
accuracy. Deep learning enables the system to learn
complex patterns and hierarchical features directly from
raw image data, eliminating the need for manual feature
engineering. Experimental results demonstrate that the
proposed approach achieves high accuracy, robustness, and
generalization across different handwriting styles. The
system effectively recognizes handwritten alphabets,
numerals, and special characters, making it suitable for
applications such as document digitization, postal mail
sorting, bank cheque processing, educational assessment
systems, and historical manuscript preservation. The study
highlights the effectiveness of deep learning techniques in
enhancing recognition performance and reducing
classification errors compared to conventional machine
learning methods. Future enhancements may include
multilingual character recognition, real-time processing
capabilities, and integration with advanced architectures
such as transformers and recurrent neural networks to
further improve accuracy and efficiency.
Index Terms - Handwritten Character Recognition, Deep
Learning, Convolutional Neural Network, Image
Processing, Pattern Recognition, Optical Character
Recognition, Machine Learning.
Shwetha M R Shwetha M R, Kowshik S S Kowshik S S· International Scientific Jou...· 0 citations
This study presents an advanced framework for Telugu handwritten character recognition by integrating Conditional Generative Adversarial Networks (cGANs) with Vision Transformer (ViT) architectures. Critical issues with Telugu scripts, such as intricate character structures, significant inter-writer variability, and a lack of annotated handwritten data, are addressed by the suggested method. While the Vision Transformer utilizes self-attention mechanisms to capture long-range spatial dependencies and global contextual features necessary for accurate recognition, cGAN-based synthetic data augmentation is employed to enhance dataset diversity and mitigate class imbalance. The proposed system outperforms several current CNN-, RNN-, and heuristic-based techniques, achieving character recognition accuracy of 97.89% and word recognition accuracy of 97.34%, as determined through extensive experiments conducted on real and synthetic handwritten datasets. Stable performance under noisy and real-world conditions is further confirmed by robustness analysis. The outcomes confirm the efficacy of integrating transformer-based learning with generative AI, creating a dependable and scalable OCR solution for low-resource Indic scripts, such as Telugu.
Padmavathi Pragada, D. Ch· Engineering Research Express· 0 citations