RELATED WORKS
Over the last few years, the application of augmented reality (AR) in location services has attracted industry attention as a means of reducing the level of abstraction for the user and of improving position accuracy [1]-[6]. The first successful location-based AR application is i Butterfly[2]. By using GPS, the i Butterfly obtains the users positions, and then achieve business objectives. The first AR-based LBS applications, Nearest Tube, appeared on iPhone,which was used to check the position of the subway in London[4]. With the development of iPhone 4, Apple Inc. provided gyroscope technology to LBS, which brought a mores table and smooth screen experience to AR. Another location services-based social networking site from the U.S., Bright kite, cooperated with McDonald in developing an AR-based system in which users could open their cellphone on a street, and any McDonald’s stores around the user would be displayed[5,6]. In addition, combined with the Bright kite user system, the user can see how many friends near by to upload their photos,add comments and soon.