Real-time drawing and comparing method for three-dimensional model

Abstract

The invention discloses a real-time drawing and comparing method for a three-dimensional model. The real-time drawing and comparing method comprises the following steps: S1, reading node data of a model in real time from a modeling software through a plug-in unit of modeling software; S2, storing the data read in the step S1 into a shared buffer region in the form of a node, wherein the node is organized in the form of a tree-shaped structure; S3, reading data of nodes in the shared buffer region through the comparing software, drawing an initial three-dimensional model in a geographic space in real time; S4, putting a picture in a reality scene into the three-dimensional geographic space, comparing the picture with the initial three-dimensional model obtained in the step S3, and correcting the initial model to obtain the three-dimensional model. The method disclosed by the invention is used for reading model data in real time, constructing the three-dimensional model by manually correcting, realizing drawing the three-dimensional model in real time according to the reality scene, and matching the constructed three-dimensional model with the reality scene.

Description

technical field [0001] The invention relates to the technical field of model building, and more specifically to a method for real-time rendering and comparison of three-dimensional models. Background technique [0002] In the existing high-end 3D engines, the real-time drawn models in the scene are built in advance by 3D modeling software and stored as hard disk files. For example, buildings, pipelines, and public transportation facilities are all built in advance and imported uniformly. Go to the osgearth software. This is conducive to the separation of model builders and program developers, but it also brings problems. First of all, model builders need to clarify all model specifications of osgearth software in advance before they can be imported normally; even if they can be imported normally, they will encounter The display effect is inconsistent with the display in the 3DS MAX software, which requires repeated communication between the programmer and the model builder ...

AI Technical Summary

Problems solved by technology

This is conducive to the separation of model builders and program developers, but it also brings problems. First of all, model builders need to clarify all model specifications of osgearth software in advance before they can be imported normally; even if they can be imported normally, they will encounter The display effect is inconsistent with the display in the 3DS MAX software, which requires repeated communication between the programmer and the model builder to solve it, and a lot of time is wasted

[0003] Secondly, the practice of constructing the 3D model in advance and storing it as a hard disk file will cause the situation that the constructed model is not suitable in the actual scene, and needs to be modified according to the actual situation; and different rendering engines, the rendering of the same model The effects are different and need to be modified according to the actual situation

[0004] In addition, for the 3D modeling of a series of fuzzy images, the effect of automatic reconstruction is very poor, and often there will be inaccurate matching and 3D loopholes. At this time, only by means of manual modeling can the captured 3D Objects in geospatial are reconstructed

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