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Interactive Cloth Simulation System

Author: MaGuangHui
Tutor: WanYi
School: Lanzhou University
Course: Signal and Information Processing
Keywords: Computer Graphics Mass - spring model Velocity-Verlet integrator Clothes simulation
CLC: TP391.41
Type: Master's thesis
Year: 2011
Downloads: 46
Quote: 0
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Abstract


With the rapid development of e-commerce and network technology, more and more customers choose online shopping, online shopping has gradually become a popular shopping trend. Among them, the number of people to buy a home costume jewelry accounted for nearly half of the number of online shopping. Currently online clothing store displays of clothing samples, explanatory text and pictures, can not meet the actual selection of the needs of the customer. If we can achieve a real-time online fitting system, buyers and sellers will bring great benefits to promote online shopping is booming. In recent years, real-time simulation system is the more popular areas of research in computer graphics. Interactive clothes simulation system, is one of the more important research direction. Interactive clothes simulation system can be applied to the online fitting system, computer-aided design and game business areas. The clothing simulation model usually particle-spring model is simplified. Using the dot a spring model clothes simulation, and when clothes dot distance is too large, the dot appears larger force, resulting in the instability of the simulation results. To solve this problem, several methods have been proposed to resolve the clothes fabrics particle dynamics differential equations, the model in order to correct the excessive force. The integration method for solving differential equations can be broadly divided into two types: one is the explicit integration method, another implicit integration method. Explicit integration method for solving differential equations, iteration steps grew up in a threshold caused by the imprecision of the numerical solution, cause clothes model the phenomenon of local jitter; iterative step size is too small, the increase in the number of iterations, the clothes will appear The hyperelastic phenomenon. The implicit integration method for solving differential equations, iteration step, the same can obtain better simulation results. Implicit integration method for solving differential equations for each particle, does not apply in the real-time requirements of occasions. In this paper, a modified Velocity-Verlet hybrid integration algorithm, the algorithm can get a more accurate numerical solutions to improve the stability of clothes simulation. Meanwhile, when the interactive control of the mouse and keyboard, nor severe distortion. Clothes model, due to the irregular particle index of the model is relatively complicated, it is difficult to establish the index relationship between the dot. In this paper, using the Find function of the C Standard Template Library, irregular clothing model on fast particle adjacent index relations. In the the interactive clothing simulation system to obtain a more realistic simulation results, the paper using the OpenGL Shading Language lighting effects in the scene. Clothes simulation systems using programmable graphics hardware, rendering effects more realistic, faster rendering. Clothes collision detection between the model and the human body model is affected clothes real-time simulation system bottlenecks, we use a simplified method for processing.

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer applications > Information processing (information processing) > Pattern Recognition and devices > Image recognition device
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