Clickable real world: Interaction with real-world landmarks using mobile phone camera

"Clickable Real World" is a new methodology to retrieve real-time real-world information from the web. The key point is that the query here is the name and the attributes of a given landmark, which is given by taking a picture of the landmark by a mobile phone camera. The user can feel to directly click the landmark in front of him/her by the shutter clicks. One of the great advantages of our approach is to use open image database such as Flickr, Picasa, or so on, to identify a landmark. Images on such open databases are automatically updated and some proper keywords are given by photographers in the world. Therefore, we need not prepare reference images which are required to identify a landmark. In addition, a matched image might have proper labels which indicate the landmark. In this paper, we will explain the overview of Clickable Real World and report some experimental results.