Gotcha

By Amit Joshi

Gotcha is a deep learning model which tells you the letters of the captcha texts.

Example:

Text: 8746

Descrition

The goal of the model is to extract all the letters of a captcha image.

Dataset

The dataset contains about 10000 captcha images.

Process

The following steps are done:

• Extracting all single letters from images and storing them. python3 extract_single_letters.py
• Making a neural network and training it on single letters.
• Doing the predictions.

Model training

• Run python3 train.py

Predictions

• Run python3 predict.py <filename>

Notes

• Computing: Google Colab Tesla K80 GPU
• Python version: 3.6.6
• Using packages
  1. Keras (tensorflow.python.keras) for building models
  2. OpenCV (cv2) for processing images
  3. sikit-learn (sklearn) for train_test_split
  4. Install necessary modules with sudo pip3 install -r requirements.txt command.