Laser point cloud and aerial image integrated building three-dimensional modeling method

Abstract

The invention discloses a laser point cloud and aerial image integrated building three-dimensional modeling method. The method comprises the following steps: acquiring the laser point cloud and the aerial image of a building by adopting an airborne laser device, making a highly-precise digital elevation model DEM and a digital orthoimage DOM product, carrying out highly fine modeling on the building, making the three-dimensional electron sand table and the three-dimensional frame model of the building, carrying out vehicle-carried data quality optimization, carrying out essential factor three-dimensional modeling by using the airborne laser device, and integrating three-dimensional digital model accomplishments acquired through measurement using the airborne laser device and a vehicle-carried mobile laser device. The method fully utilizing and fusing an advanced laser point cloud technology and an aerial image technology can efficiently carry out three-dimensional panoramic laser scanning and modeling on the building to obtain clear and highly-precise practical construction three-dimensional data of the building, so the data acquisition efficiency and the data acquisition quality are greatly improved, the automatic degree of data processing is high, and the whole production efficiency of three dimensional modeling is improved.

Description

technical field [0001] The invention relates to the field of building three-dimensional modeling, in particular to a building three-dimensional modeling method integrating laser point cloud and aerial image. Background technique [0002] With the development of science and technology, there are more and more demands for 3D building modeling and the realization of virtual reality of buildings. The realization of 3D virtual buildings will have an unprecedented and huge impact on the prospects of many fields such as computer science and earth information science. Such as 3D virtual city, robot intelligent navigation, missile guidance, vehicle assisted driving, architectural simulation display, flight simulation, medical simulation, virtual museum and virtual art exhibition hall, etc. [0003] At present, 3D modeling is roughly directly using 3D production software, such as computer-aided drawing design software, 3D animation and other design software. This method can realistica...

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Problems solved by technology

[0003] At present, 3D modeling generally uses 3D production software directly, such as computer-aided drawing design software, 3D animation and other design software. This method can realistically represent the urban structure and material characteristics, especially for those natural objects and irregular objects. Buildings work well, but modeling a large area is time-consuming, labor-intensive, and uneconomical