- See also: Positional tracking
Tracking allows the VR or AR system to know where your head (HMD), hands and other body parts (Input Devices) are looking and moving. Tracking is important to accurately render the virtual world to match your physical positions and movements.
Rotational tracking tracks an object's movement in all 3 rotational directions: pitch, yaw, and roll. Rotational tracking is usually performed by IMUs such as accelerometers, gyroscopes and magnetometers.
Positional tracking tracks an object's movement in all 3 translational directions: forward/back, up/down, left/right. Positional tracking is usually more difficult than rotational tracking and is accomplished through different Types and Systems.
Comparison of tracking systems
- See also: Comparison of tracking systems
There are several consumer-level tracking systems currently available. Originally, these were used for interaction with regular non-VR video games, but more recent tracking systems have been used for VR systems.
|Brand & Model||Tracking system||Inside-out||Outside-in||Marker-based|| Marker
|Nintendo Wii Remote||??||Yes||No||Yes||Infrared||Yes||?||?|