Seamless linkage method of highway three-dimensional model database and digital elevation model database

Abstract

The invention relates to a seamless linkage method of a highway three-dimensional model database and a digital elevation model database, relates to a method for matching the highway three-dimensional model and the digital elevation model database, is used for solving the problem that the highway three-dimensional visualization technique is only three-dimensional visualization of a highway model and difficulty calculates that soil excavation or filling operation is carried out on the earth surface, and is used for guiding construction. The method comprises the steps of: extracting elevation coordinates of each point in a specific point extraction mode according to the highway three-dimensional model database to build a digital matrix; building a digital matrix of the elevation coordinates of each point according to the digital elevation model database of a highway roadbed earth surface, wherein the elevation coordinates with the same horizontal coordinates in the two digital matrixes are mapped one to one; and correcting the elevation coordinates in the digital elevation model database of the highway roadbed earth surface with the elevation coordinates corresponding to the digital matrix in the highway three-dimensional model database as a reference, and building a data sheet of differences of elevation coordinates of all points between the highway three-dimensional model database and the digital elevation model database.

Description

technical field [0001] The invention relates to a method for matching a highway three-dimensional model with a digital elevation model database. Background technique [0002] Highway 3D visualization technology can combine horizontal, vertical and horizontal 3D design data to generate 3D road scenes, which is very important for improving design quality. However, the traditional road 3D visualization technology is only the 3D visualization of the road model. It is difficult for construction personnel to imagine the effect of the combination of the road design plan and the actual ground surface, so it is difficult to calculate whether to excavate or fill the ground surface based on the road model. Contents of the invention [0003] The purpose of the present invention is to provide a method for seamlessly linking the three-dimensional road model database and the digital elevation model database to solve the problem that the traditional road three-dimensional visualization te...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a method for seamlessly linking the three-dimensional road model database and the digital elevation model database to solve the problem that the traditional road three-dimensional visualization technology is only the three-dimensional visualization of the road model, and it is difficult for the construction personnel to imagine the combination of the design scheme of the road and the actual ground surface After effect, it is difficult to calculate whether to excavate or fill the surface according to the road model