OpenCV-4.3.0-noX+contrib+nonfree

This version includes support for all libraries, drivers and external software (except ones requiring graphics environment, and except Java integration), all contrib modules and OpenCV non-free algorithms.

Since this release, support for Intel OpenVINO is built in.

OpenCV-4.2.0-openvino-noX+contrib+nonfree

This version includes support for all libraries, drivers and external software (except ones requiring graphics environment, and except Java integration), all contrib modules and OpenCV non-free algorithms.

This version comes with Intel OpenVINO support for DNN module: https://www.learnopencv.com/using-openvino-with-opencv/ - if you don't plan to use it, you can install "clean" 4.2.0 version.

OpenCV-4.2.0-noX+contrib+nonfree

This version includes support for all libraries, drivers and external software (except ones requiring graphics environment, and except Java integration), all contrib modules and OpenCV non-free algorithms.

OpenCV-3.4.1-noX+contrib+nonfree

This version includes support for all libraries, drivers and external software (except ones requiring graphics environment, and except Java integration), all contrib modules and OpenCV non-free algorithms.

Version for Debian/Raspbian Buster is compiled without Python 3.x support. All else versions support Python both 2.x and 3.x.