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A polygonal grid model amalgamation method for any topology

A technology of mesh model and fusion method, applied in 3D modeling, 3D image processing, image data processing, etc., can solve problems such as topology constraints, and achieve clear algorithm, friendly interface, and robust results

Inactive Publication Date: 2008-09-17
ZHEJIANG UNIV
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Problems solved by technology

[0004] The present invention provides a polygonal grid model fusion method with arbitrary topology, aiming to solve the topology limitation problem existing in the existing polygonal grid model fusion method

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  • A polygonal grid model amalgamation method for any topology
  • A polygonal grid model amalgamation method for any topology
  • A polygonal grid model amalgamation method for any topology

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Embodiment Construction

[0024] A polygonal mesh model fusion method suitable for any topology. The user divides the interested parts from the existing model, and then transforms each part to a suitable orientation with the help of transition primitives. Then the user uses the mouse to move the Outline the outline of the intermediate transition object, and then the algorithm generates a variational implicit surface representation, accurate interpolation boundary position and normal constraints, and an intermediate transition object that conforms to the outline drawn by the user. Finally, it is automatically extracted by a localized moving cube method Get out the part that needs to be reserved on the transition surface and realize the seamless connection with the object to be fused. For the specific process, see figure 1 .

[0025] There are four key points in the implementation of the present invention: object positioning based on transition primitives, description of transition objects based on varia...

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Abstract

The invention discloses a method of fusing polygon mesh models of arbitrary topology, which includes the following steps: 1) intercepting parts of interest from an existed model;2)setting the parts at a suitable position with the aid of transition primitives;3)drawing lines with a mouse on the screen so as to specify the general outline of a transitional objects used to connect the existed model;4)defining a smooth interpolation border and a transition curved surface in line with the specified outline with a variational implicit surface;5)carrying out polygonization for the transition curved surface and carrying out seamless connection between the transition curved surface and the existed model. The invention obtains a new complex polygon mesh model through fusing existed polygon mesh models in a natural and smooth way, thus provides a simple and visualized modeling method for non-professionals.

Description

technical field [0001] The invention relates to computer model processing technology, in particular to a polygon grid model fusion method in arbitrary topological situations. Background technique [0002] 3D object fusion provides a simple and powerful modeling tool by seamlessly splicing the parts of existing objects together to construct a new model with their characteristics. In the early days, some researchers proposed to use parametric technology to establish the mapping relationship between the affected areas at the boundary of the object to be fused, and then mixed the affected areas to achieve smooth splicing, see T.Kanai.H.Suzuki, J.Mitani and F. Kimura. Interactive mesh fusion based on local 3D metamorphosis. In Proceedings of Graphics Interface, 1999, pp 148-156. [0003] In recent years, the development of differential domain polygon mesh processing technology provides a new idea for the realization of fusion operation. After establishing the corresponding rela...

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Application Information

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IPC IPC(8): G06T15/00G06T17/00G06T15/08
Inventor 林俊聪金小刚王昌凌许健泉
Owner ZHEJIANG UNIV
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