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A Feature Preserving Model Simplification Method

A technology of model simplification and feature preservation, applied in 3D modeling, image data processing, instruments, etc., can solve problems such as limited memory capacity, bus bandwidth and CPU processing performance, rigid 3D human model, and large amount of model data. Achieve the effect of improving the post-processing simplification speed, reducing the calculation cost, and maintaining the visual characteristics

Inactive Publication Date: 2016-05-04
JIANGSU UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of using software for human body modeling are: the modeling work is cumbersome and the workload is heavy, and the obtained 3D human body model appears dull and has a poor sense of reality
The human body model obtained by using the 3D scanning equipment saves the complicated modeling work, the 3D model has high precision and strong sense of reality, but the disadvantage is that the model has a large amount of data, for example: the geometric data generated after the famous David sculpture is scanned Reaching the gigantic size of billions of triangles
[0004] Limited by memory capacity, bus bandwidth and CPU processing performance, it is very challenging to draw the mesh model of this type of 3D scanning

Method used

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  • A Feature Preserving Model Simplification Method
  • A Feature Preserving Model Simplification Method
  • A Feature Preserving Model Simplification Method

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Embodiment Construction

[0030] Below in conjunction with accompanying drawing description and formula, further illustrate the present invention, it should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention, after reading the present invention, those skilled in the art will understand various equivalents of the present invention Modifications in form all fall within the scope defined by the appended claims of this application.

[0031] The model simplification algorithm process of the present invention is as follows Figure 4 As shown, the detailed steps are as follows:

[0032] 1) Use a 3D scanner to scan the object to obtain the original grid model;

[0033] 2) According to the edge where the vertex index is located, a vertex with three or more edges is selected as a public vertex by default;

[0034] 3) Judge the three vertices adjacent to the common vertex. If they are not collinear, the four poi...

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Abstract

The invention discloses a model simplification method with a feature keeping function. Vertexes with greater specificity in a complex model are obtained by geometric features among model vertexes, and on the basis of keeping the vertexes with the greater specificity, edge collapse is performed on other vertexes with small specificity and related edges. The method has the optimization effects that better and important visual features of the obtained simplified model can be kept under the condition of a lower triangular patch number, and the simplification speed is improved to a certain degree latterly.

Description

technical field [0001] The invention relates to three-dimensional modeling and three-dimensional model simplification methods, and belongs to the field of computer graphics. Background technique [0002] With the continuous development of 3D games and animation technologies, the requirements for the realism of 3D scenes are getting higher and higher, which will inevitably lead to more and more complex 3D models of objects in the scenes, causing the rapid expansion of the data volume of 3D models. On the other hand, if the player is required to interact with the 3D scene in real time in a 3D game, this requires fast processing, transmission and storage of the model. Therefore, model simplification technology becomes a necessity. [0003] For applications such as 3D games, animation design, 3D clothing CAD design, virtual try-on, and clothing draping, a large number of 3D human body models are required. At present, there are mainly two methods for modeling the 3D human body m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T17/00G06T17/10G06T19/00
Inventor 王卫东李坚李宁叶华宋晓宁胡存刚郭小芳
Owner JIANGSU UNIV OF SCI & TECH
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