3D map modeling surface contour fast linkage rendering method

Abstract

The invention relates to the technical field of 3D map, and provides a 3D map modeling surface contour fast linkage rendering method. The method comprises the following steps: (1) acquiring the coordinate information of a building, and building a 3D map model; (2) analyzing the characteristics of a surface mounting area, and determining the space coordinates of shooting points of an unmanned aerial vehicle in batches according to a mathematical reverse deduction model; (3) storing the space coordinates of the shooting points; inputting the space coordinates of the shooting points of the unmanned aerial vehicle to the unmanned aerial vehicle to realize automatic shooting by the unmanned aerial vehicle; and (5) automatically screening a shot image to match the surface mounting area according to the feature point information of the surface mounting area, and performing surface mounting. The beneficial effects are as follows: with the help of 3D map modeling, cloud computing, a mathematical reverse deduction model, an unmanned aerial vehicle and a smart surface mounting technology, efficient linked 3D modeling surface rendering is realized, and the surface texture characteristics of a 3D map are presented truly; the shooting points of an unmanned aerial vehicle are automatically generated in batches, position deviation caused by artificial selection is avoided, the work continuity is improved while the quality of rendered images is guaranteed, and manpower and material resources are saved.

Description

technical field [0001] The invention relates to the technical field of three-dimensional maps, in particular to a fast linkage rendering method for three-dimensional map modeling surface contours. Background technique [0002] At present, with the acceleration of urbanization, urban development is changing with each passing day. The integration of information industrialization has made the integration of urban information an inevitable trend, and the construction of "digital city" has been pushed to the national strategic level, in which the establishment of three-dimensional electronic maps of cities plays an increasingly important role. The 3D map gives users an intuitive real-time display, provides convenience for users' travel map query and navigation guidance, and at the same time provides humanized services in e-commerce, daily information, publicity and interaction, etc., truly builds a city information system, and realizes "digital city" national strategic goals. ...

AI Technical Summary

Problems solved by technology

[0004] At present, it is proposed to use drones to build real-time 3D maps, and to extract and analyze information through environmental perception, so as to realize positioning and 3D map construction. In the case of uncertain positions, it has certain application value, but it needs continuous judgment It takes a lot of time and energy to select a new picture shooting point, and it is impossible to guarantee the best patch shooting point; in addition, it is proposed to obtain a two-dimensional map texture generated by two-dimensional vector map data and digital elevation data, and generate a belt texture after processing. The three-dimensional map of the texture improves the efficiency and speed in the patching process, but it still needs to be photographed manually in the early stage of image acquisition, which requires a lot of economic cost and time period, etc.

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