Three-dimensional building model construction method and device, electronic equipment and storage medium

Abstract

The invention provides a three-dimensional building model construction method and device, electronic equipment and a storage medium, and relates to the field of three-dimensional modeling. The specific implementation method comprises the following steps: extracting point cloud data of at least one building from filtered point cloud data; performing surface vector extraction on the point cloud data of the at least one building to obtain a building vector model; extracting angular points of the building vector model; obtaining a control point corresponding to the angular points of the building vector model on a pre-processed oblique photography image, and obtaining a corresponding relation based on the control point; and based on the corresponding relationship, performing texture mapping on the building vector model by using the pre-processed oblique photography image to obtain a three-dimensional building model. By adopting the embodiment of the invention, the three-dimensional model of a building can be simply, quickly and precisely established, and the real scene of an urban building is highly restored.

Description

technical field [0001] The present application relates to the field of three-dimensional modeling, in particular to a method, device, electronic equipment and storage medium for constructing a three-dimensional building model. Background technique [0002] With the continuous development and deepening of digital city-related technologies, the construction technology of 3D urban real scene models has also developed rapidly. Among them, buildings are the most important part of the city. Reappearance is the key to constructing a "real 3D model of the city". [0003] In related technologies, the main means of three-dimensional modeling of buildings include: modeling based on two-dimensional vector graphics, modeling based on characteristic textures obtained by manually photographing ground objects, and modeling based on photogrammetry technology. However, using these methods, Either the modeling efficiency is low, or the accuracy is poor, or the model texture is not rich enough...

AI Technical Summary

Problems solved by technology

[0003] In related technologies, the main means of three-dimensional modeling of buildings include: modeling based on two-dimensional vector graphics, modeling based on characteristic textures obtained by manually photographing ground objects, and modeling based on photogrammetry technology. However, using these methods, Either the modeling efficiency is low, or the accuracy is poor, or the model texture is not rich enough, resulting in the inability to obtain high-quality 3D models of urban buildings

There is currently no effective solution for this

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