Method for rapidly displaying and browsing massive models of three-dimensional geographic information system

Abstract

The invention relates to the field of three-dimensional geographic information systems, in particular to a method for rapidly displaying and browsing massive models of a three-dimensional geographic information system in a three-dimensional scene at high efficiency by utilizing SkylineTerraSuite series software which is mainly applied in more than 75,000 three-dimensional models in Shanghai. In the method, a browser / server B / S system architecture consists of at least three servers and a three-dimensional scene browsing client, and massive three-dimensional models are rapidly displayed and browsed in the three-dimensional scene by using technologies in three-dimensional data optimization, model management, model data network transmission and the like. By the method, related technical problems of model format optimization methods, massive model management methods, three-dimensional model network transmission methods and the like are mainly solved. The invention has the advantages that: the scene display speed is increased, the efficiency of model release, loading, query, addition, modification and the like is improved, the displaying and browsing speed of the models is increased, and the reading speed of data and the displaying speed of the models are increased.

Description

technical field [0001] The present invention relates to the field of a three-dimensional geographic information system, especially a technology that is mainly applied to more than 75,000 three-dimensional models in Shanghai, using Skyline TerraSuite series software, and adopting three-dimensional data optimization, model management, and model data network transmission. A fast display and browsing method for displaying massive 3D models in a 3D scene. Background technique [0002] Three-dimensional geographic information system GIS, based on spatial information, comprehensively uses remote sensing, virtual reality, global positioning system, computer network and other technologies to truly reflect the real appearance of a city in the computer, and its content mainly includes the topography of the city , buildings, roads, underground pipelines, and a large number of human and social attributes related to it. At present, in many fields related to urban construction, such as ur...

AI Technical Summary

Problems solved by technology

The rapid development of 3D data acquisition technology provides massive data for accurate description of geometric objects, but due to the limitation of computer software and hardware level, how to realize the rapid display and browsing of these massive data remains to be solved

[0005] Use 3D software such as Skyline to display a large number of 3D building models in 3D scenes. The traditional method is to load all the models into the 3D scene at one time, and then start roaming the 3D scene. The initialization time will be longer, and a large number of 3D models will also Greatly affects the roaming speed of the 3D scene

Taking more than 75,000 3D models in Shanghai as an example, users need to wait 20-30 minutes to complete the initialization of the 3D scene, and when browsing the scene, the machine is often stuck or even crashed due to excessive system resource consumption

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