Ubiquitous hybrid tracking techniques for augmented reality applications

Augmented reality is a technology in which computer generated virtual objects interacts with the real time physical objects. Tracking is one of most sensitive issue in augmented reality based system. Without high accurate tracking of physical objects available in real environment, it is not possible to overlay virtual objects. The alignment of virtual and real environment depends upon the accuracy of tracking system. In this paper, we have carried out extensive literature survey of various tracking techniques, such as sensor based, vision and hybrid and limitations of present tracking techniques are discussed. Also proposes to use multiple sensors and camera vision for ubiquitous hybrid tracking system.