We Don ’ t Need No Stinkin ’ Calibration

Early work in augmented reality grew out of virtual reality research domains. These initial augmented reality systems applied the same methods and technology to solve what at first appeared to be a similar problem: correctly render a scene of virtual objects as the user changes viewpoint in the world. This is indeed similar for augmented and virtual reality systems. In virtual reality systems our sense of presence is primarily controlled by the degree to which the visual stimulus presented corresponds to our kinesthetic senses. Augmented reality systems have an additional performance constraint, that being, the correct registration between the user’s view of the real scene and the virtual objects augmenting it. It is a more difficult task to maintain a compelling sense of presence when there are discrepancies between these two visual stimuli.