T. Maruyama1, T. Morita2

1 - Kokusai Kogyo Co., LTD , Spatial Information Department,Tokyo,Japan

2 - Hosei University, Department of Civil and Environmental Engineering ,Tokyo, Japan



People tend to pay attention to signs rather than watching the images of buildings especially on the first visit in order to relate to the real world when using the mobile phone VR navigation service. We would like to introduce our Sign map to help people find their way in city areas. The Sign map puts the sign object with texture mapping of a building into a 3D model. It is a technical methodology of mapping that uses building attribute information to label and display appropriate sign objects. It emphasizes helping the human brain to recognize the objects by display signs rather than just displaying the actual shape and location of signs. In addition, this method also delivers a personalized function. Personalized function is the key methodology in the ubiquitous mapping concept. It means that the system understands the users search history, personal tastes, or requests in order to alter the display signs to help the user to find the destinations.

First of all, template sign objects such as a well-known bank, convenience store, or department store were created. After preparing the sign objects, they were displayed on the mobile phones screen according to the attribute value of the 3D building model to which they were attached. The sign map is simple but retains efficient information to supply the VR navigation service via mobile phone screens. The sign map method at this time still remains in the prototype model stage and still needs work on its review and modification; however, we can present the way of displaying and modeling schemes. Also, the coverage sectors on the sign map will be expanded not only for commercial signs and billboards, but also to cover public signs and tourist information as well.