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Method for deforming global energy grid based on adjustable normal numbers

A technology of mesh deformation and global energy, applied in image data processing, 3D modeling, instruments, etc., can solve problems such as deformation of objects that cannot be simulated with various materials, and achieve the effect of efficient deformation

Active Publication Date: 2014-09-03
TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The above geometry-based methods cannot simulate the deformation of objects with multiple materials

Method used

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  • Method for deforming global energy grid based on adjustable normal numbers
  • Method for deforming global energy grid based on adjustable normal numbers
  • Method for deforming global energy grid based on adjustable normal numbers

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Embodiment Construction

[0024] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples serve to illustrate the present invention, but do not limit the scope of the present invention.

[0025] Such as figure 1 As shown, the global energy grid deformation method based on the adjustable norm of the present invention includes the steps of: S1, inputting the grid to be deformed; S2, determining the control vertices and the positions of the control vertices on the grid; S3, inputting parameters reflecting the rigid body material properties of the mesh object; S4, using Laplace deformation to generate an initial deformed mesh; S5, applying rigid body transformation to the neighborhood of each vertex on the initial deformed mesh; S6, establishing an energy function with the input parameters as the order, optimizing the function to obtain a new position of each vertex, and obta...

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Abstract

The present invention is a global energy grid deformation method based on an adjustable norm, comprising steps: S1, inputting the grid to be deformed; S2, determining the control vertices on the grid and the positions of the control vertices; S3, inputting Reflecting the parameters of the rigid body material properties of the mesh object; S4, using Laplace deformation to generate an initial deformed mesh; S5, applying rigid body transformation to the neighborhood of each vertex on the initial deformed mesh; S6, establishing Taking the input parameter as the energy function of order, optimizing the function to obtain the new position of each vertex, and obtaining the deformation result of the grid; and S7, judging whether the deformation result is approaching convergence; if so, ending ; If not, return to S5. The invention can efficiently simulate the deformation of mesh models of various materials.

Description

technical field [0001] The invention belongs to the technical field of digital media, and in particular relates to a grid deformation method capable of simulating material properties of objects. Background technique [0002] A mesh can be transformed into multiple shapes through mesh deformation, which can generate a model or an animation sequence that meets the user's needs. The key to mesh deformation is to be able to produce good visual effects and make the deformation results conform to the general physical laws. [0003] A direct method is to deform the model according to the laws of physics. The method "Elastically deformable models" proposed by Terzopoulos in 1987 is a method based on physics. Such methods often need to solve a partial differential equation, and solving these partial differential equations is very complex and computationally intensive. [0004] Another type of method is the geometry-based method, which achieves better deformation results by maintain...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T17/30
Inventor 胡事民高林张国鑫
Owner TSINGHUA UNIV