Urban model generation method, apparatus and device, and computer readable storage medium

Abstract

The embodiment of the invention discloses a city model generation method, device and equipment and a computer readable storage medium. The method comprises the following steps: making a corresponding terrain model and a corresponding digital orthophoto map by using an acquired and matched satellite image of a target area; then collecting vector data of each building in the satellite image so as to ensure that the top of the building model is attached to the actual building roof during subsequent building of the building model; generating a three-dimensional model of each building according to the vector data, namely creating a three-dimensional model in which a top structure is matched with an actual roof structure; and finally, adding the digital orthophoto map, the three-dimensional models of all the buildings and the terrain model into the same three-dimensional scene so as to place the three-dimensional models in reasonable position areas and backgrounds to obtain a city model of the target area. Therefore, according to the embodiment of the invention, the satellite image is utilized to make the three-dimensional model image of the urban area, so that the image acquisition difficulty is reduced, the image quality is ensured, and the limitation of aerial photography is avoided.

Description

technical field [0001] The present invention relates to the field of modeling, in particular to a method, device, equipment and computer-readable storage medium for generating a city model. Background technique [0002] A three-dimensional electronic map refers to a three-dimensional, abstract description of one or more aspects of the real world or a part of it according to a certain proportion. four characteristics of sex. [0003] When drawing the urban area in the electronic map, the 3D model corresponding to the urban area is often completed by aerial oblique photography technology. However, a large number of aerial photographs are needed in the model making using aerial oblique photography technology, and the aerial shooting angle and flight route are difficult to control due to weather and other reasons, and a large number of high-rise buildings in the city will also cause the There is redundant occlusion, resulting in low accuracy of the 3D model corresponding to th...

AI Technical Summary

Problems solved by technology

However, a large number of aerial photographs are needed in the model making using aerial oblique photography technology, and the aerial shooting angle and flight route are difficult to control due to weather and other reasons, and a large number of high-rise buildings in the city will also cause the aerial photographs to be blurred. There are redundant occlusions, resulting in low accuracy of the 3D model corresponding to the urban area

Images