Unveiling CAPTCHAs: Advanced CNN Techniques for High-Accuracy Recognition
Poonam Shourie, Vatsala Anand, Deepak Upadhyay, Swati Devliyal, Sheifali Gupta, Gunjan Shandilya · 2024
The development of reliable CAPTCHA systems is required because it is a persistent difficulty to differentiate between human users and artificial bots. In this study, the issue of overcoming text-based CAPTCHAs is tackled by utilizing Convolutional Neural Networks (CNNs), which resulted in an impressively high accuracy rate of 99%. In order to simulate the variability that exists in the actual world, the CNN model that has been developed has been rigorously trained on a wide variety of CAPTCHA images; substantial data augmentation techniques have been utilized. Through the utilization of deep learning, hence are able to improve the model's capability of recognizing and decoding complicated and deformed CAPTCHA characters. This new development highlights the significance of innovation and the implementation of cutting-edge technologies in the process of improving and strengthening cybersecurity measures. The results of the experiments verify the effectiveness of the model, exhibiting a significant improvement above conventional OCR approaches and other machine learning techniques. The deep architecture of the CNN, which is capable of capturing subtle patterns and reducing noise in CAPTCHA images, is a substantial contributor to the high level of accuracy that was attained. This research not only draws attention to the flaws that are present in the CAPTCHA systems that are now in use, but it also emphasizes the importance of developing solutions that are both more secure and inventive. With the goal of creating trust in digital platforms through the promotion of security and the reduction of fraud. It is the development of such cutting-edge technologies that contribute to the establishment of a safe digital economy, which in turn makes it possible for economic growth to be sustained over time.