RELATED WORKS
Over the last fewyears, the application of augmented reality (AR) in location services has at tracted in dustryattention as a means of reducing the level of abstraction for the user and of improving position accuracy. The first successful location-based AR application is i Butterfly[2]. By using GPS, the iButterfly obtains the users positions, and the nachieve business objectives. ThefirstAR-based LBS applications, Nearest Tube, appeared on iPhone,which was used to check the position of the subway in London. With the development of iPhone 4 ,AppleInc. provided gyroscope technologyto LBS, which broughta mores table and smooth screen experience to AR. Another location services-based social networking site from theU.S., Bright kite,coo perated with McDonald in developing an AR-based system in which users could open their cell phone on a street, and any McDonald’s stores around the user would be displayed .Inaddition,combined with the Bright kite user system, the usercan see how many friends near by to upload their photos,add comments and soon