Install libopenni2-dev by entering the following commands in the terminal:
sudo apt update sudo apt install libopenni2-dev
headers for OpenNI 'Natural Interaction' frameworks
OpenNI is a framework for getting data to support 'Natural Interaction', i.e. skeleton tracking, gesture tracking, and similar ways of getting data from humans. OpenNI provides the interface for physical devices and for middleware components. The API enables modules to be registered in the OpenNI framework, which then produce sensory data. OpenNI also allows selection of different hardware and middleware modules.