ABSTRACT
Abstract. This paper introduces two case studies of augmented reality (AR) systems which use see-through HMDs. The first case is a collaborative AR system called AR2Hockey that requires real-time interactive operations, moderate registration accuracy, and a relatively small registration area. The players can hit a virtual puck with physical mallets in a shared physical game field. The other case study is the MR Living Room, where participants can visually simulate the location of virtual furniture and articles in the halfequipped physical living room. The registration is more crucial in this case because for the requirement of visual simulation. The details of registration algorithms implemented are described as well as the system configurations of both systems.
