Deep Learning Based CAPTCHA Verification Systems
Sagar Mahajan, Sneha Bohra · 2025
In the digital age, safeguarding online platforms against automated threats is increasingly critical. CAPTCHA systems have traditionally relied on text-based challenges, which humans can easily solve but are becoming less effective against advanced automated systems. To address this, we propose a novel CAPTCHA verification system that leverages deep learning and emoji recognition, offering a more secure and user-friendly alternative. This system utilizes a dataset of emoji images sourced from Kaggle, which undergoes preprocessing steps such as image resizing, normalization, and augmentation to Enhance the performance of a deep learning model developed using Python and executed within the Anaconda environment, is trained to recognize and interpret various emoji emotions, generating CAPTCHA challenges by displaying random sequences of emojis. Users interact with these challenges, and the model classifies their responses based on learned patterns to verify authenticity.