CAPTCHA Recognition Based on Convolutional Neural Network
When a crawler encounters an image CAPTCHA system, a CAPTCHA recognition program is needed. This project uses PyTorch to build a deep learning model based on a Convolutional Neural Network (CNN) to recognize complex CAPTCHA images composed of numbers and letters. Here we use the captcha library's built-in generator to produce tens of thousands of images and divide them into train sets and test sets. Through PyTorch framework, a CNN model is built and later trained for a certain number of rounds