OpenCV C/C++ Interface Machine Learning legacy 2.4.x interface examples used for teaching, instruction and reference over the years (2010-2013) -

Uses older C++ interface to OpenCV ML library, with additional code - as these examples pre-date the new C++ OpenCV 3.x ML interface.

All tested with OpenCV 2.4.x and GCC (Linux) and known to work with MS Visual Studio 200x on Win32 / Win64.

N.B. due to changes in the OpenCV API these do not generically work with OpenCV > 2.4.x by default (except from the genetic algorithm (GA) example).

If I taught you between 2010 and 2013 at Cranfield University or ESTIA - these are the C++ examples from class.

Demo source code is provided "as is" to aid your learning and understanding.

For a long time, the in absence of other fully worked examples for the OpenCV machine learning components became the de facto reference for the use of these OpenCV routines (any conceptual errors or bad choices of parameters made here have propagated widely).

In each sub-directory:

• .cpp file(s) - code for the example
• .name file - an explanation of the data and its source
• .data file - the original and complete set of data (CSV file format)
• .train file - the data to be used for training (CSV file format)
• .test file - the data to be used for testing (CSV file format)
• .xml, .yml - example data files for testing some tools

All dataset examples are taken and reproduced from the UCI Machine Learning Repository.

Download each file as needed or to download the entire repository and run each try:

git clone https://github.com/tobybreckon/cpp-examples-ml.git
cd cpp-examples-ml
cmake .
make
cd <sub directory of one of the examples>
./<insert name of executable>

The genetic algorithm (GA; inside directory ga_ex/) example runs with a webcam connected or from a command line supplied video file of a format OpenCV supports on your system (otherwise edit the code to provide your own image source). N.B. you may need to change the line near the top that specifies the camera device to use on this example - change "0" if you have one webcam, I have it set to "1" to skip my built-in laptop webcam and use the connected USB camera.

If referencing these examples in your own work please use:

@TechReport{breckon2010,
  author =       {Breckon, T.P. and Barnes, S.E.},
  title =        {Machine Learning - MSc Course Notes},
  institution =  {Cranfield University},
  year =         {2010},
  address =      {Bedfordshire, UK},
}

If you find any bugs please raise an issue (or better still submit a pull request, please) - [email protected]

"may the source be with you" - anon.