Mahotas - Mahotas is a computer vision and image processing library for Python.
QuantConnect - QuantConnect provides a free algorithm backtesting tool and financial data so engineers can design algorithmic trading strategies. We are democratizing algorithm trading technology to empower investors.
OpenCV - OpenCV is the world's biggest computer vision library
quantra - A public API for quantitative finance made with Quantlib
ITK - ITK is an open-source, cross-platform library that provides developers with an extensive suite of software tools for image analysis.
CloudQuant - Crowd based algorithmic trading development and backtesing for stock market trading.