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Three-dimensional model conversion method

A 3D model and model conversion technology, applied in design optimization/simulation, image data processing, special data processing applications, etc., can solve problems such as uncontrollable models, models that cannot be fully displayed, and cannot be loaded, so as to avoid model errors and retain Authenticity and integrity, the effect of improving simulation accuracy

Pending Publication Date: 2022-03-15
CHINA HELICOPTER RES & DEV INST
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Problems solved by technology

[0005] The disadvantages of this method include: the converted model is imported into the 3D design tool, the structure is incomplete, cannot be loaded, data is lost and the center point is deviated, in the scene simulation software, the model is not controllable, and the model parts cannot be defined and simulated Simulation, this method has a large error rate and low efficiency, and the model cannot be fully displayed

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  • Three-dimensional model conversion method

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specific Embodiment approach

[0045] 1) By using the 3D data model made by CATIA, UG, 3DMAX and other 3D design tools, the overall grouping of the model and the reorganization of the structure of each part are carried out in the design stage, the structure of the parts required for the simulation process is defined, and the position of the center point is determined. Save the model as a physical file after rendering.

[0046] 2) Import the saved 3D model into the model conversion tool DEEP Exploration, and continue to check the overall structure of the 3D model under DEEP Exploration. The 3D model file may be structurally misplaced in DEEP Exploration, so carry out secondary group reconstruction of the 3D model to ensure reconstruction Consistency of the constructed model with the original model.

[0047] 3) The .lwo model file converted from step 2) needs to be further converted into a .mdl editable model through the LwConvert tool, and the .mdl file can be read by STK for scene simulation.

[0048] 4) I...

Embodiment 1

[0058] Taking the 3D model conversion method of a helicopter under scene simulation as an example, in the simulation modeling of a combat scene of a certain helicopter, it is necessary to meet the requirements that the 3D model of a certain helicopter can be displayed in detail in the combat scene, and carry out a 3D model according to the method of the present invention. Model conversion, this model has been used in scene simulations in multiple environments, now take this scene as an example to illustrate the implementation process of this method, the implementation flow chart can be found in figure 1 :

[0059] 1) During the development of the helicopter, the 3D digital prototype model was designed using the Dassault CATIA 3D design tool. In CATIA, the structure of the components required for the simulation process was defined, and the position of the center point was determined. way to save.

[0060] 2) Import the saved 3D model into the model conversion software D...

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Abstract

The invention provides a three-dimensional model conversion method, which comprises the following steps of: performing first rendering on a first helicopter complete machine model to obtain a second helicopter complete machine model; importing the second helicopter complete machine model into model conversion software to obtain a third helicopter complete machine model; importing the third helicopter complete machine model into a model conversion tool to form a fourth helicopter complete machine model; importing the fourth helicopter complete machine model into scene simulation software; if the preset condition is met, code re-modification and compiling are carried out on components of the fourth helicopter complete machine model, and a fifth helicopter complete machine model is obtained; the fifth helicopter complete machine model is imported into AGI STK software, and whether parts of the fifth helicopter complete machine model operate normally or not is checked; and if the parts of the fifth helicopter complete machine model operate normally, performing second rendering on the second helicopter complete machine model to complete conversion.

Description

technical field [0001] The invention belongs to the technical field of three-dimensional model processing, and in particular relates to a three-dimensional model conversion method. Background technique [0002] Nowadays, there are many kinds of 3D model design tools, and the 3D design tools vary greatly among different enterprises, and the file data generated are also different. As a key technology for scene simulation and collaborative design, 3D model conversion aims to remove the limitations of multiple tools and data formats, so that the converted 3D model can run normally in new 3D design tools or scene simulation software, and at the same time Guarantee the integrity and consistency of the converted 3D model. The complexity of the large-scale 3D model and the diversity of structures put forward higher requirements for the completeness of the model during the conversion process. [0003] At present, the common 3D model conversion methods are mainly based on model conv...

Claims

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Application Information

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IPC IPC(8): G06T19/20G06T15/00G06F30/15G06F30/20
CPCG06T19/20G06T15/00G06F30/15G06F30/20
Inventor 杜奕聪祝如锟崔立志高铭泽贾甜
Owner CHINA HELICOPTER RES & DEV INST
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