Method for obtaining vivid three-dimensional urban road map

Abstract

The invention provides a method for obtaining a vivid three-dimensional urban road map and belongs to the technical field of navigation.A system comprises a projection module, a data analysis module, a road modeling module and a three-dimensional road surface generation module, wherein the projection module is used for converting obtained road longitude and latitude coordinates into geodetic coordinates; the data analysis module is used for cutting attribute data of a road and geodetic coordinate data to form linear data of the road; the road modeling module is used for analyzing the linear data and judging whether double-digital combination can be conducted or not, and if yes, double-digital combination is conducted to form planar data; the three-dimensional road surface generation module is used for extracting a road center line according to the planar data for generation of a three-dimensional road surface.By analyzing the linear data of the road for double-digital combination, the planar data is formed, the process of processing the data generated by the three-dimensional road surface is simplified, and the vivid three-dimensional urban road map is obtained at low cost and with low workloads.

Description

technical field [0001] The present invention relates to the technical field of navigation, in particular to a three-dimensional road generation system and method. Background technique [0002] With the advancement of science and technology, social development has entered an all-round information age marked by numbers and networks. At the same time, the concept of digital city came into being. The so-called digital city refers to the comprehensive use of computer digital means (GIS, remote sensing, telemetry, network, multimedia and virtual simulation and other technologies) to carry out all-round digital collection and processing of urban infrastructure and functional mechanisms, with urban geography, resources, Powerful functions of digitization, networking, and optimal decision-making of complex systems such as ecological environment, population, economy, and society. In a digital city, roads in urban infrastructure are as important as a person's blood vessels, which mai...

AI Technical Summary

Problems solved by technology

Among them, the processing of the analog data of the image and the construction of the map are very heavy, and the displayed 3D map is difficult to be clear enough and close to reality

[0004] There is also a three-dimensional map of Gaode, which provides users with a three-dimensional city map similar to three-dimensional, which has a high degree of fidelity, but the digital data that constitutes the map is planar data, that is, the data information of the road is the whole surface, such as the zebra crossing road Data, which only has the spatial data of the entire zebra crossing, needs to manually analyze and integrate the spatial data of various roads, and finally form the model data for generating three-dimensional roads, thus requiring a large amount of data processing, with high workload and cost

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