Augmented Reality: Principles and Practice

Chapter 5. Calibration and Registration

Using a tracking system creates the need to handle multiple coordinate systems. These coordinate systems need to be reconciled with each other, so that a correct overlay of virtual objects on tracked physical objects is ensured. This process, which is called registration, is required to convert the poses from tracking into the coordinate system of the rendering application. Registration is also necessary to align the rendering camera with respect to a tracked display. We have already seen how a tracking coordinate system can be registered to an object coordinate system using the absolute orientation algorithm in Chapter 4.

Registration in AR means that several components need calibration. In this chapter, ...