The Organization And Management Of3D Scene Data For Indoor Positioning

Since the1960s, with the development of network, bandwidth, and electroniccommerce, the3D scene is gradually replace of the traditional way based on2D imageperformance, because it becomes more abundant, comprehensive and vivid details.3Dscene building has a very wide range of research, such as multimedia, network, virtualsimulation technology and so on. It usually generates a real-time3D space system toshow the3D scene, resulting in a realistic "virtual environment". And in most industries(such as fire,medical simulation, virtual reality, disaster emergency, etc.) for large-scale3D scene building, they value most is that when the user makes requests, the3D scenecan quickly and accurately display at high frame rate. But nature has too many forms,and rapidly changes, which fills the as a natural or man-made disasters such asfire.when we not timely insight, all sorts of changes caused by building areunpredictable. In the midst of the fire industry, for example, when the fire broke out, theindoor environment have been great changes, but also with the changes of the indoorpersonnel information is very different from others at ordinary time. we need to be asaccurate as possible in the process of rescue for indoor personnel to locate,search andrescue.The same is true in the industry of emergency. When disasters occur, we all needreal-time analyse the indoor environment condition for providing the subsequentrescue with accurate analysis of the scene. Aid in the past, most of the time areaccording to the plan of the existing building rescuers’ experience. But on the basis ofthis, we often have artificial factors and luck in aid, is not conducive to effectivelyprotect people’s life and property safety.For various industries like fire, medical,emergency needs,In recent years, more and more indoor positioning technology isused in3D scene building. For the technology of indoor positioning oriented3D sceneis comparatively mature, but we still need to seek a kind of indoor positioningoriented method to quickly build3D scene, to realize efficient on-demand build.In the process of building a3D scene for indoor positioning, how to fast,efficient on-demand building mainly exists the following problems:（1）For3D scene data of indoor positioning is larges and dispersely stored, ithindered the fast, high efficiency building and application of3D scene.The precision requirements about Indoor positioning of the3D scene data are higher than theaverage of3D scene data, and different industries need different indoor positioning ofthe3D scene data. The amount of data in the process of the unified administration islarger and more complex.（2）Most indoor positioning oriented3D scenes are stored in a file system, in theform of the whole scene and one-to-one correspondence relationship to the file. theyneed to be overall loaded,so it is difficult to achieve the three dimensional scene fast,efficient on-demand build.（3）Indoor positioning oriented3D scene is scattered in different location of theserver.It has so large amount of data to achieve difficultly for cross-server mass theunification of the3D scene data organization, storage, management and scheduling.According to the above problem, based on the early successes--data-orienteddiscovers, DOA system architecture, this paper proposes a massive3D scene databased on DOA architecture of distributed organizations and storage mechanism.Itscatters3D scene data in the multiple nodes, and through the registry data for unifiedmanagement and scheduling, realizes3D scene fast, efficiently and on-demandbuild.The main contents include:（1）3D scene data storage mechanism research. After data distributed organizationsfor industries and reasonable storage, so that the data registry can unified manageindustry sources for the back of the rapid and efficient on-demand constructionconvenience.（2）3D scene data storage mechanism research. After data distributed organizationsfor industries and reasonable storage, so that the data registry can unified manageindustry sources for the back of the rapid and efficient on-demand constructionconvenience.（3）Unified management and scheduling method based on data registry study. Dataregistry make a unified management of different industries.When companies build the3D scenes that are needed data sources, they make use of the registry data search,schedule, and realize3D scene data for indoor positioning of fast, on-demand build.In this paper, the innovation points and the main research results include:（1）Come up with the decentralized organization and the thestorage mechanism ofmassive3D scene data. Through the in-depth study of3D scene data types,I proposethe method of3D scene data in distributed organization, which based on data mappingcoding.And on the basis of the establishment of a3D scene data distributed storagesystem. In addition, through the registry data and3D scene data management3DSDML markup language, realizing the unified management of data to providetechnical support for the3d scene to quickly build. （2）Registry is put forward based on the data of3D scene data unified managementand scheduling mechanism. Based on3D scene data classification, through thedifferent scheduling policies for dynamic scheduling of all kinds of3D scene data,combined with the data scheduling algorithm, realize3D scene data on-demandscheduling.（3）Designing and implementing a data registry based3D scene data managementsystem. In the early stage of the research results, based on the mainly focuses on theclient to the system design, has realized the indoor positioning oriented3D scenedisplay, create, save and load, etc.