Multi-source image fusion imaging system of 3D police geographic information platform

Abstract

The invention relates to a multi-source image fusion imaging system of a three-dimensional police geographic information platform. The system solves the technical problems that an objective world simulated through the prior art is low in trueness and the like. The system comprises a tilting remote sensing photogrammeteric device, a near-surface mobile photogrammeteric device, a live-action three-dimensional modeling subsystem, a building information model subsystem, a two-dimensional GIS subsystem and a police information subsystem. The tilting remote sensing photogrammeteric device and the near-surface mobile photogrammeteric device are connected with the live-action three-dimensional modeling subsystem, the live-action three-dimensional modeling subsystem and the building information model subsystem are connected with a virtual reality city information model building system, and the city information model building system, the two-dimensional GIS subsystem and the police information subsystem are connected with a multi-source fusion subsystem. The multi-source image fusion imaging system has the advantages that technical breakthrough in uniform global positioning, air-ground integration, interior and outdoor integration, interfaces, standards and other aspects is achieved, so that multilevel police application, such as guard security, anti-terrorist, commanding and dispatching and base and grassroots, is met.

Description

technical field [0001] The invention belongs to the technical field of police information system construction, and relates to a three-dimensional geographic information platform, in particular to a multi-source image fusion imaging system of a three-dimensional police geographic information platform. Background technique [0002] At present, the application of two-dimensional police geographic information platform in various public security departments has been relatively mature. Two-dimensional GIS basically realizes various functions related to police business, such as: GIS map display function, map operation function, police map function, GPS police car display function, map query and positioning function, drawing function, etc. Although to a certain extent, it meets the needs of the daily management work of the public security department, but the two-dimensional GIS maps the three-dimensional spatial information into two-dimensional plane information, which is inevitably...

AI Technical Summary

Problems solved by technology

However, with the development of 3D GIS so far, its application is still limited to the visual display and roaming browsing of urban virtual scenes.

The reason is due to the limitations of traditional digital city 3D modeling technology: traditional digital city 3D modeling mainly adopts the technical means of artificial modeling, sampling texture and sample map, and realizes the simulation of the objective world by means of simulation. Three-dimensional reproduction cannot truly simulate the objective world; however, various urban management departments such as public security, urban management, planning, and gardening need a "full information" urban model that can truly reflect the current status of the city

[0006] Although the above scheme has improved the performance of the 3D geographic information system to a certain extent, it still cannot fundamentally solve the technical problems mentioned above.

In particular, 3D scenes still mainly use artificial modeling, sampled textures, sampled maps and other technical means to achieve 3D reproduction of the objective world by means of simulation, which cannot truly simulate the objective world

The traditional digital city construction model based on manual modeling uses sampled city appearance simulation, which cannot truly represent the objective world, and lacks the expression and connection of the internal space of the building and the things in the space

Due to the limitations of aerial photography and the lack of near-ground images, it is difficult to realize the construction of near-ground refined models in 3D real scenes, which cannot meet the needs of near-ground observation applications.

However, the conventional near-ground street view integration technology is only a way to switch from 2D and 3D scenes to street view images. The spatial positioning relationship of this street view image does not have a rigorous mathematical basis, and it cannot be accurately matched with the real 3D model space. , and cannot be seamlessly connected with GIS data sources

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