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Three-dimensional model processing method and device

A technology of 3D models and processing methods, applied in the computer field, can solve problems such as the inability to effectively improve the operating efficiency of 3D models, and achieve the effect of improving simplification efficiency and reducing visual loss

Active Publication Date: 2015-10-07
SHENZHEN TENCENT COMP SYST CO LTD
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Problems solved by technology

However, for a model such as a 3D map, the contribution of the buildings in the model to the visual effect is much greater than that of areas such as surface depressions. If the simplified ratio is too high, the geometric deformation of the building due to the reduction of vertices and faces will cause The visual loss that comes, is more likely to be noticed
If the simplification ratio is too low, the operating efficiency of the 3D model cannot be effectively improved

Method used

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  • Three-dimensional model processing method and device

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Embodiment Construction

[0028] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0029] The invention provides a three-dimensional model processing scheme, which not only ensures the visual quality of the three-dimensional model, but also improves the simplification efficiency by separately simplifying the buildings and non-buildings in the three-dimensional model.

[0030] The above-mentioned 3D model processing scheme is mainly applied to 3D models with slightly obvious features, such as 3D models obtained by 3D reconstruction of urban oblique photography. Of course, it can also be applied to artificially modeled 3D cities or 3D models reconstructed from oblique photography in rural areas and mountainous areas, as long as the 3D models have obvi...

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Abstract

The invention discloses a three-dimensional model processing method comprising the following steps of: extracting a building characteristic of a three-dimensional model in order to obtain a building portion and non-building portion; simplifying the building portion based on a preset building simplifying proportion and simplifying the non-building portion based on a preset non-building simplifying proportion; merging the simplified building portion and the simplified non-building portion in order to obtain a new three-dimensional model. The three-dimensional model processing method effectively protects the building characteristic of the model, reduces visual loss of the building portion caused by simplification, and improves simplification efficiency.

Description

technical field [0001] The invention relates to the computer field, in particular to a three-dimensional model processing method and device. Background technique [0002] 3D models are rendered with simple wireframes at different levels of detail or shaded in different ways, and can be overlaid with textures to reflect real objects. However, the 3D model usually has a very high triangular mesh density, which puts a lot of pressure on the drawing time and storage capacity of the graphics display device. Therefore, in the case of no obvious loss of vision, a simpler model is used, that is, the 3D model is simplified to improve the operating efficiency of the 3D model. [0003] At present, there are many research results on model simplification in the industry, and there are many ways to maintain and reduce geometric features. However, for a model such as a 3D map, the contribution of the buildings in the model to the visual effect is much greater than that of areas such as s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T17/00
Inventor 王晔
Owner SHENZHEN TENCENT COMP SYST CO LTD
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