Abstract
Abstract. With the development of urbanization, the building structures are more and more complex, and various moving objects, such as human beings, robots and unmanned aerial vehicles, often travel through indoor and outdoor 3D space, which puts forward higher requirements for the accurate search and location in indoor and outdoor space. At present, most of the spatial location methods for indoor entities are carried out through 2D maps. However, the indoor environment is a complex 3D space, which increases the difficulty of the search process. In addition, 2D map cannot accurately display the 3D spatial position of the entity. Therefore, it is difficult for 2D maps to search and locate in complex environment. Therefore, how to quickly and effectively carry out spatial location query in complex indoor environment has become an urgent problem to be solved. Taking the library of Beijing University of Civil Engineering and Architecture as an example, this paper obtains the indoor 3D information of the library based on SLAM, processes and publishes the acquired 3D information on IndoorViewer, and uses its API in the book retrieval system. Finally, a book retrieval and location system based on real-scene 3D is finished.
Highlights
With the development of mobile internet technology and the maturation of indoor positioning technology, people's demand for navigation applications has expanded from the original outdoor navigation to the integrated navigation inside and outside the room
The acquired data are processed in IndoorViewer, points of interest (POI) are established for the bookshelves of the library, and the spatial location of books is determined according to the corresponding relationship between books and bookshelves, so as to realize the function of path planning
The bookshelf point of interest to add work is very important: the database of the book retrieval system provides books, categories, corresponding bookshelves and other information, in order to find out the space location of the book in the IndoorViewer, you need to add points of interest to each layer of the bookshelf and add relevant information to achieve the spatial positioning of the book
Summary
With the development of mobile internet technology and the maturation of indoor positioning technology, people's demand for navigation applications has expanded from the original outdoor navigation to the integrated navigation inside and outside the room. Considering the contradiction between the rapid development of the application of GIS from outdoor to indoor and the lag of theory and technology methods (WU Wei, 2012) , this paper takes the library of Beijing University of Civil Engineering and Architecture as an example, aiming at the difficulty for teachers and students to find books in the library, used SLAM technology to acquire the indoor spatial data of the library, including point cloud data and 3D real scene images. In the book retrieval system, API interface of IndoorViewer is used to realize a book retrieval and positioning system based on 3D real scene
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