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A 3D artificial object model deformation method

A technology of man-made objects and models, which is applied in the field of deformation of three-dimensional man-made object models, and can solve problems such as inability to handle

Active Publication Date: 2017-05-10
SHENZHEN INST OF ADVANCED TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its disadvantage is that it can only handle the editing of one component primitive at a time, because the propagation is a one-way propagation from one primitive body to other primitive bodies
As such, the method cannot handle structural restoration of 3D man-made objects when multiple components change simultaneously

Method used

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  • A 3D artificial object model deformation method

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Experimental program
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Effect test

Embodiment 1

[0041] See figure 1 Shown is a flowchart of a method for deforming a three-dimensional man-made object model of the present invention.

[0042] The method includes the following steps:

[0043] Step S1: Obtain the primitive body of the three-dimensional man-made object model component.

[0044] Obtaining the primitive body of the 3D man-made object model part includes the following steps:

[0045] Calculate the tightest directed bounding box of 3D man-made object model parts based on Rotating calipers algorithm;

[0046] Calculate the skeleton of 3D man-made object model parts based on the surface mesh shrinkage algorithm;

[0047] According to the distance from the sample point on the skeleton to the surface, a radius is obtained. All skeleton points have a radius, and a generalized cylinder can be generated. The center line of the cylinder is the skeleton, and the radius changes with the thickness of the model;

[0048] The maximum value of the minimum volume of the directed bounding bo...

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Abstract

The invention relates to the field of computer graphs, and provides a deformation method of a three-dimensional artificial object model. The deformation method includes the steps that primitive bodies of components of the three-dimensional artificial object model are obtained; relations among all the primitive bodies of the components of the three-dimensional artificial object model are detected; a structural relation constraint set of the primitive bodies of the components of the three-dimensional artificial object model is built; a set of the primitive bodies of the components of the three-dimensional artificial object model is edited. Structures of the primary bodies, after being edited simultaneously, of the components are recovered simultaneously.

Description

Technical field [0001] The invention relates to the field of computer graphics, in particular to a method for deforming a three-dimensional man-made object model. Background technique [0002] The editing and deformation of 3D models are common methods for generating new variants based on existing 3D models. The user drags and changes a certain part of the model with the mouse, which requires the computer to automatically calculate and propagate this local change to the rest of the model. For three-dimensional man-made objects, users often manipulate and edit a part. We need to propagate the edit from the operated part to the other parts, while maintaining the original structure of the man-made object, such as the parallel relationship and orthogonal relationship between certain parts. , Coplanar relationship, etc. [0003] For this reason, some researchers have proposed an abstract representation for the parts of a three-dimensional man-made object model, that is, each part is a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T17/00G06T19/00
Inventor 徐凯黄惠陈宝权
Owner SHENZHEN INST OF ADVANCED TECH