Develop a classifier to identify characters in captchas. Image preprocessing, training, classification had to be done in Python using standard libraries like OpenCV, Scikit-Image, Scikit Learn, etc.
We have found wise to use Machine learning, it means to teach the program detect needed letters and numbers and return correct result. We had dataset for training, which contained images with captchas and correct answers. We have used it for training the model. Then we applied the model to test dataset (only images) and have got the string with answers.