Three-dimensional visualized indoor navigation method oriented to large shopping center

Abstract

The invention relates to the field of GIS (Geographic Information System) three-dimensional visualization, and in particular relates to a three-dimensional visualized indoor navigation method oriented to a large shopping center. The method comprises the following steps of: carrying out extraction and classification on navigation elements, network structure elements and geometric elements of the shopping center from the perspective of function and visualization according to the characteristics of geographical elements in the existing large shopping centers, wherein similar elements are subjected to a same detail level grade description; and constructing a data model and a network structure according to the elements obtained through extraction and classification, and based on the data model and the network structure, carrying out indoor navigation based on three-dimensional visualization. According to the method, the achievements in the aspects of building the expression model of indoor three-dimensional navigation geographic elements, indoor three-dimensional navigation data logical models, indoor three-dimensional navigation models and the like not only create a novel LBS (Location Based Service) application mode, but also enrich the connotation of the indoor navigation technology, thereby providing a beneficial reference for the indoor three-dimensional navigation application of large shopping centers.

Description

technical field [0001] The invention relates to the field of three-dimensional visualization of geographic information systems (GIS), in particular to an indoor three-dimensional navigation method for large shopping centers, which can be used for model construction of three-dimensional navigation scenes. Background technique [0002] With the development of geographical information applications such as Internet maps and mobile location services (LBS, Location Based Service), indoor map navigation is making up for the limitations of outdoor maps, has a potentially large user group, and is driven by innovative technologies and application requirements. advantages, and has been widely concerned by industry and academia. As an important carrier for urban crowds, large shopping malls can hardly meet the needs of shoppers by simply showing indoor scenes with multiple floors, hundreds of thousands of square meters, and numerous shops through a simple plan view. In a shopping mall ...

AI Technical Summary

Problems solved by technology

[0005] Directly use the architectural model of CityGML to construct the indoor model in the project, and there are still the following outstanding problems: For the architectural model, CityGML only provides general or abstract content, and does not reflect the unique room and floor of the large shopping mall indoor navigation model. Modeling standards, architectural modeling for specific application purposes must be inherited and expanded, the navigation elements in the shopping center must be extracted and classified, and the corresponding fineness of expression should be selected according to the attributes and granularity of the elements themselves to ensure the smoothness of the navigation process. Integrity of clear schematic and presentation level to achieve efficient 3D indoor navigation

Indoor navigation based on 3D visualization is more in line with people's cognitive habits, but its application is not widespread, and it cannot achieve the best application effect. The technology and application related to 3D visualization indoor navigation are still very scarce

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