Learning OpenCV 3

Appendix B. opencv_contrib

An Overview of the opencv_contrib Modules

The opencv_contrib repository is where most new user-generated content goes; it often contains more complete vision applications than you will find in OpenCV itself. It is composed of many modules that have no dependencies between them. Each module is required to have documentation, unit tests, and sample code, and many also have tutorials. Each module has to comply with all the other formatting, Buildbot tests, unit tests, and so on that OpenCV’s core modules have to pass. Each one is documented in the same way as regular OpenCV functions and thus together they form a fairly self-maintaining superset of more advanced computer vision capability, ready to be used.

The opencv_contrib directory is located at https://github.com/opencv/opencv_contrib and needs to be built separately from the main OpenCV library. You can find documentation for these modules (and the regular OpenCV modules) at the nightly build site. The content summary as of this writing appears next.

Contents of opencv_contrib

This following list gives an overview of all modules available inside the opencv_contrib repository as of this writing. These modules must be downloaded and built separately. If you do decide to build this repository, but do not want to build all of the functions, you can turn off building any given function by replacing <reponame> in the build code that follows with the name of the function.

 $ cmake -D OPENCV_EXTRA_MODULES_PATH=< ...