Browsing by Subject "garment simulation"

Now showing 1 - 2 of 2

Open Access
A 3D garment design and simulation system
(2004) Durupınar, Funda
In this thesis study, a 3D graphics environment for virtual garment design and simulation is presented. The proposed system enables the three dimensional construction of a garment from its two dimensional cloth panels, for which the underlying structure is a mass-spring model. Construction of the garment is performed through cutting, boundary smoothing , seaming and scaling. Afterwards, it is possible to do fitting on virtual mannequins like in the real life as if in a tailor’s workshop. The behavior of cloth under different environmental conditions is implemented applying a physically-based approach. As well as the simulation of the draping of garments, efficient and realistic visualization of garments is an important issue in cloth modelling. There are various material types and reflectance properties for fabrics. We have implemented a number of material and rendering options such as knitwear, woven cloth and standard shading methods such as Gouraud shading. Performance results of the system are presented at the end.
Open Access
Animation of dressed virtual humans
(2004) Kabul, İlknur Kaynar
In this study, we present a system that enables the simulation of a dressed virtual human with different motion behaviors. The proposed system is composed of three modules: human body motion module, garment design module, and garment simulation module. The human body motion module enables the user to design different motion behaviors by adjusting the motion patterns for each body part. The garment design module consists of creating garment patterns, setting their sizes, and cutting them by removing particles. The adjustment of garment patterns onto human body is achieved by seaming garment patterns while applying cloth deformation and collision handling. Garment simulation module provides animation of virtual humans with the garments on. The main problem in garment simulation is collision handling between the animated virtual human and its garments. This study focuses on this problem. Collision detection calculations are reduced by using bounding volumes for both virtual human and garments. In addition, for avoiding edge-edge collision detection, a heuristic that constructs a very thin volume around the human body is applied. For the collision response, penalty forces and constraints are applied depending on the distance between the particle and the triangle’s plane, and the particle’s position with respect to triangle. Visual results and performance experiments produced by the implementation are presented.