A physical distortion method based on details coding and reconstruction

Abstract

A physical deformation method based on detail coding and reconstruction includes: (1) at the pre-treating stage, self adaptive predigestion is carried out on an original fine gridding model so as to build a basic gridding expression; the generated basic gridding is used for the calculation of physical deformation during operation; (2) detail coding is carried out based on the position and the normal vector of the basic gridding to the top point of fine gridding; (3) at the operation stage, physical deformation calculation is carried out on the basic gridding model; (4) the fine gridding model is reconstructed according to the basic gridding model and the detail coding after deformation and finally realistic drafting is carried out. By adopting the physical deformation method based on detail coding and reconstruction of the invention, the user can interactively simulate the elastic deformation process of a complex object only by simply appointing the material parameters of the object; the geometrical detail of the surface of the object can be better maintained under the premise of ensuring the deformation quality of the object.

Description

technical field [0001] The invention belongs to the technical field of computer virtual reality and computer graphics, in particular to the physics-based object deformation technology in computer animation. Background technique [0002] For a long time, object deformation has always been a research hotspot in the field of computer graphics. In the real world, many objects are soft and deformable. Therefore, the simulation of object deformation is widely used in computer animation, computer-aided design, video games and surgical simulation. Has a wide range of applications. [0003] In the field of computer graphics, existing methods for realizing object deformation are mainly divided into two categories: geometry-based methods and physics-based methods. Geometry-based methods take the target position or differential properties of the control point set as constraints, and adjust the object to the expected pose or shape through geometric operations. For example, the traditio...

AI Technical Summary

Problems solved by technology

But the disadvantage of the method is: poor real-time performance, and it is not easy to retain the elasticity of complex objects

[0005] In general, the geometry-based deformation method has fast calculation speed and is more suitable for real-time interactive applications, but its fidelity is not enough; the physics-based method, especially the finite element method, has high fidelity, but the calculation cost is high. It is not yet possible to simulate the deformation of complex objects in real time on hardware

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