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Classified strain limiting-based dynamic cloth simulation method

A simulation method and clothing technology, applied in animation production, image data processing, instruments, etc., can solve problems such as particle oscillation and excessive deformation, achieve the effects of ensuring real-time performance, saving calculation overhead, and improving simulation efficiency

Inactive Publication Date: 2012-07-18
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the above deficiencies in the prior art, the purpose of the present invention is to solve the problem that the particle may oscillate and deform excessively in dynamic clothing simulation by physical methods, so as to ensure the realism of clothing simulation

Method used

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  • Classified strain limiting-based dynamic cloth simulation method
  • Classified strain limiting-based dynamic cloth simulation method
  • Classified strain limiting-based dynamic cloth simulation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0037] (1) Input 50 frames of human body model data and 1 frame of clothing model data into the system. There are 115,520 faces per frame for the human body model, and 11,654 faces for the clothing model. Then build a mass-spring model for the triangular primitives of the garment. attached image 3 The a sub-figure represents the traditional particle-spring grid structure, and in the b and c sub-figures we take 7 points as an example to give the spring schematic diagram of our model under the triangular grid structure in the simulation. The solid lines in subfigure c represent tension (shear), and the dashed lines represent bending springs. The construction of the spring in the simulation starts with image 3 Take the tension (shear) spring at point 1 in b as an example. First traverse the adjacent points of point 1, find points 2 and 3, and establish a tension (shear) spring between points 1 and 2 and 3. Then traverse all the neighbors of points 2 and 3, and find that th...

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Abstract

The invention discloses a classified strain limiting-based dynamic cloth simulation method. A strain limiting method is applied to dynamic cloth simulation, so that a distortion phenomenon in the simulation can be prevented. The method comprises the main following steps of: calculating a cloth simulation animation by using the knowledge of dynamics, and identifying an oscillation and excessive deformation area; processing the identified area by using an improved strain limiting method; and performing collision detection and response. Due to the adoption of the improved strain limiting method,the problems of oscillation and excessive deformation in the dynamic cloth simulation are solved, the problem of cloth visual effect distortion caused by the oscillation and the excessive deformationin the dynamic cloth simulation is solved, and the phenomenon that cloth is deformed to produce a viscous feeling and is levitated on the skin of a human body without additional damping force is avoided.

Description

technical field [0001] The invention relates to the technical field of computer graphics, in particular to the technical field of computer clothing simulation. Background technique [0002] Dynamic clothing simulation has become one of the hot and difficult issues in the field of virtual reality today. Realistic and efficient clothing simulation can make virtual characters more lifelike and have strong three-dimensional visual effects. The Nami princess in the 3D movie Avatar, the cute elves in the popular online game World of Warcraft, the costume show of the characters in the QQ chat software, and the characters in various animations, the virtual guides all need beautiful and well-fitting costumes. In the 3D virtual clothing mall, customers can also intuitively obtain 3D dynamic effects by wearing the selected virtual clothing on models, so that people can experience the fun of shopping and fitting without going to the streets. [0003] At present, the simulation method b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T13/40
Inventor 侯进向宇
Owner SOUTHWEST JIAOTONG UNIV
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