Mixed loading method of real scene 3D model and 3D simulation model

Abstract

The invention discloses a real-scene three-dimensional model and three-dimensional simulation model hybrid loading method and relates to the field of graphic images. The method is characterized by, to begin with, optimizing a three-dimensional simulation model by utilizing a real-scene three-dimensional model; then, carrying out block division on the real-scene three-dimensional model and the three-dimensional simulation model; thirdly, designing hybrid loading parameters; and finally, carrying out real-scene three-dimensional model and three-dimensional simulation model hybrid loading when camera parameters change in a three-dimensional scene according to the hybrid loading parameters. The method comprehensively utilizes different advantages of two data resources of the real-scene three-dimensional model and the three-dimensional simulation model; and at the macro level, advantages of real color and rich details of an oblique photography model are utilized, and at the micro level, the advantages of complete details and clear textures of three-dimensional simulation are utilized, so that a purpose of carrying out real presentation of a city is achieved, the problem that it is difficult to express city macro and micro forms and colors at the same time by merely utilizing the real-scene three-dimensional model or the three-dimensional simulation model separately is solved, and an application effect of a three-dimensional digital city is improved.

Description

technical field [0001] The invention relates to the field of graphics and images, in particular to a mixed loading method of a real-scene three-dimensional model and a three-dimensional simulation model. Background technique [0002] In recent years, the use of oblique photography technology to obtain ground images and then establish a real 3D model has been widely used. Many cities have used helicopters, drones and other aircraft to obtain multi-view images and established a real 3D model. Since the texture of the real 3D model comes from aerial photography, the 3D model established has a strong sense of reality and good effect. It has advantages over artificial 3D models in large-scale scene display and overlooking perspectives such as building roofs. However, due to the high-altitude shooting and occlusion of the data source, the real scene model is not as good as the 3D simulation model in terms of fine expression, especially in areas close to the ground or with occlusio...

AI Technical Summary

Problems solved by technology

In this method, the different advantages of the real-scene 3D model and the 3D simulation model are comprehensively used. At the macro level, the oblique photographic model has the advantages of true color and rich details. At the micro level, the 3D simulation has complete details and clear texture. In order to achieve the purpose of truly displaying the city, it solves the problem that it is difficult to better represent the macro and micro forms and colors of the city at the same time by using a single real-world 3D model or 3D simulation model. It can be used in city image display, urban and rural planning construction and management. , real estate business promotion and other fields to enhance the application effect of 3D digital city

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