The program reads QR code from an image and writes code data to a .xml file.
Required libraries: Python Imaging Library (PIL), pyzbar

The program detects and removes black (dark) edges of a scanned/pictured image.
Required library: Python Imaging Library (PIL)

The program corrects a skewed image and removes its black edges using edge_detection from black-edge-detector.py.
Required libraries: OpenCV, NumPy, scikit-image, Python Imaging Library (PIL)

The program extracts and removes stamps from an image.
Required libraries: OpenCV, NumPy

The program extracts and removes tables from an image.
Required libraries: OpenCV, NumPy
