Simple scripts for captcha cracking with convolution neural network via TensorFlow.

Aimed at the six-digit captcha from Russian federal migration service.

Accuracy for single digit is about 95%

• tensorflow >= 0.12.1
• Pillow >= 4.2.1

There are training and test data samples in the archives:

• data_train.tar.xz contains 9.000 images
• data_test.tar.xz contains 450 images

Both samples contains marked images, so you can easily change proportion between them.

• Unpack both archives
• python single_digit.py - run with the network for recognizing single digit
• python all_digits.py - run with the network for recognizing whole captcha