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A novel model for expanding horizons in sign Language recognition
Esraa Hassan1, Mahmoud Y Shams2, Tarek Abd El-Hafeez3,4
1Department of Machine Learning and Information Retrieval, Faculty of Artificial Intelligence, Kafrelsheikh University, Kafr El-Sheikh, 33516, Egypt. esraa.hassan@ai.kfs.edu.eg.
Scientific Reports
|July 8, 2025
Summary
This study introduces Sign Nevestro Densenet Attention (SNDA), a novel deep learning model for American Sign Language (ASL) recognition. SNDA achieves 99.76% accuracy, significantly advancing ASL gesture recognition and communication accessibility.
Area of Science:
- Computer Vision
- Deep Learning
- Human-Computer Interaction
Background:
- American Sign Language (ASL) recognition is crucial for communication accessibility.
- Existing computer vision and deep learning methods for ASL recognition require further accuracy and robustness improvements.
- The American Sign Language Recognition Dataset provides a large-scale resource for ASL gesture and letter classification.
Purpose of the Study:
- To comprehensively evaluate existing ASL recognition methods.
- To introduce and validate a novel deep learning architecture, Sign Nevestro Densenet Attention (SNDA), for ASL recognition.
- To enhance the accuracy and robustness of ASL gesture classification.
Main Methods:
- Evaluation of various ASL recognition techniques on the American Sign Language Recognition Dataset.
- Development and implementation of the Sign Nevestro Densenet Attention (SNDA) architecture.
- Utilizing the Nadam optimizer for efficient model training and faster convergence.
Main Results:
- SNDA achieved state-of-the-art performance with 99.76% accuracy.
- The model demonstrated perfect sensitivity and high specificity and precision.
- The fused attention mechanism in SNDA proved effective for domain-specific deep learning enhancement.
Conclusions:
- SNDA is a highly effective architecture for ASL gesture recognition.
- The developed model has significant potential to improve communication accessibility for the deaf and hard-of-hearing communities.
- Deep learning models can be significantly enhanced for specialized applications through techniques like fused attention mechanisms.

