Composing 6 DOF tracking systems for VR/AR

Abstract

This paper presents a concept for the composition of tracking systems in the context of Virtual and Augmented Reality (VR/AR) applications. Several independent 6 DOF tracking systems can be used simultaneously to accomplish the interaction requirements for a given application. The control unit for tracking systems, processing measurements with optional properties as time stamps and quality values is described as well as procedures for the coordinate system alignment of different tracking systems and the configuration of such a hybrid system. Considerations on the way accuracy errors might increase or decrease by combining tracking systems are included. The concept is motivated considering a medical AR system combining optical and electromagnetic tracking technology as example

Surgical instrument recognition and calibration for optical tracking system

“…The usage of the optical tracking systems based on the infrared cameras is becoming more and more common for virtual, augmented or so-called mixed reality (MR) applied to computer aided surgery [1]. Advantages of optical tracking include that it is less susceptible to noise, it allows for many objects to be tracked simultaneously, and interaction devices can be lightweight and wireless.…”