Real-Time Sign Language Recognition Using CNN and OpenCV for Inclusive Communication

Real-Time Sign Language Recognition Using CNN and OpenCV for Inclusive Communication

B. Venkat Vivek1, P. Chakradhar2, S. Eswar Chaitanaya3  and K. Dinesh Kumar 4

Department of Artificial Intelligence and Machine Learning, Raghu Institute of Technology,

Visakhapatnam, Andhra Pradesh, India

Abstract—Sign language is an indispensable medium of communication for individuals with hearing impairments, enabling them to interact and participate fully in society. However, the recognition and interpretation of sign language gestures present significant technical challenges due to their dynamic, spatially complex, and context-dependent nature. The "Real-Time Sign Language Recognition Using CNN and OpenCV" project aims to address these challenges through advanced machine learning and computer vision techniques, delivering an accessible, real-time gesture recognition system.

The system leverages a meticulously curated dataset comprising a wide range of sign language gestures captured in authentic environments. This dataset was sourced from publicly available repositories and augmented through custom video captures. Each gesture was recorded under diverse lighting conditions, varied backgrounds, and different signing styles to ensure robust generalization and adaptability. Using OpenCV for live video acquisition and preprocessing, the input data undergoes rigorous preparation before analysis. Central to the architecture is the implementation of Convolutional Neural Networks (CNNs), which efficiently extract both spatial and temporal features, enabling accurate and real-time gesture classification. To enhance performance, activation functions such as ReLU and SoftMax are integrated, alongside data augmentation strategies that ensure model adaptability to real-world conditions. This project aims to create an inclusive communication tool that bridges the gap for individuals unfamiliar with sign language, fostering accessibility and social equity.