OpenNI

OpenNI (Open Natural Interaction) is an open-source software framework designed to enable devices like depth sensors and cameras to capture and interpret 3D environment data. It allows applications to recognize gestures, track movement, and understand spatial information, making it useful for gaming, robotics, and augmented reality. Essentially, OpenNI provides the tools for hardware to sense physical space and translate that into digital signals that software can process, enabling natural interaction with digital systems without traditional input devices like mice or keyboards.