Unmanned aerial vehicle aerial survey virtual simulation method based on scene modeling and virtual photography

Abstract

The invention discloses an unmanned aerial vehicle aerial survey virtual simulation method based on scene modeling and virtual photography, in order to simulate basic operation of unmanned aerial vehicle aerial survey on a computer, a three-dimensional fine model of a real scene is obtained through multiple modes such as oblique photogrammetry, close photogrammetry, laser scanning data three-dimensional reconstruction and manual modeling. Or a three-dimensional scene model of a non-real scene is obtained through an artificial modeling mode, whether the set unmanned aerial vehicle route intersects with the three-dimensional scene model or not is judged, the virtual unmanned aerial vehicle flies along the route, and a corresponding virtual photographic image is displayed on a computer at a first view angle of the virtual unmanned aerial vehicle or at a view point nearby the virtual unmanned aerial vehicle at a third view angle; and virtual photography is carried out on each hovering photography point on the air line, virtual photography images corresponding to the three-dimensional scene model under the illumination model in different weather are obtained, image control point layout is performed on the virtual photography images, and a geographic information product of a virtual simulation system is generated from the virtual photography images by utilizing aerial survey interior work software.

Description

technical field [0001] The invention relates to the technical field of virtual simulation for aerial survey of unmanned aerial vehicles, in particular to a virtual simulation method for aerial survey of unmanned aerial vehicles based on scene modeling and virtual photography. Background technique [0002] The field operation of UAV aerial survey has certain risks. In the case of unfamiliarity with the actual terrain of the aerial survey, improper route planning by using the ground station, or encountering strong winds and other weather, it is easy to cause the danger of bombing; The shooting effect of man-machine aerial surveying field images produces direct images, which has an important impact on the effect of aerial surveying office data generation. It is necessary to select appropriate lighting conditions for UAV aerial surveying field shooting. [0003] The UAV photogrammetry virtual simulation experiment platform is based on surveying and mapping UAVs, indoor terrain a...

AI Technical Summary

Problems solved by technology

Proximity to photogrammetry mainly solves the problem that existing technologies cannot efficiently obtain sub-centimeter or even millimeter-level ultra-high resolution images on the ground (such as landslides, dams, high slopes, etc.) or on the surface of artificial objects (such as tall ancient buildings, landmark buildings, etc.), It is difficult to achieve fine 3D reconstruction

[0006] The existing UAV aerial survey virtual simulation software does not support 3D fine modeling of real scenes, does not support virtual photography of 3D scene models under different weather lighting models, does not support 3D modeling based on virtual photographic images, does not support Airline collision detection based on 3D scene model, etc.

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