Giydirilmiş insan modellerinin animasyonu

ABSTRACTANIMATION OF DRESSED VIRTUAL HUMANS˙Ilknur Kaynar KabulM.S. in Computer Engineeringü uşSupervisors: Prof. Dr. Bülent Ozgüc anduAssist. Prof. Dr. Uğur Güdükbayg uuJuly, 2004In this study, we present a system that enables the simulation of a dressedvirtual human with different motion behaviors. The proposed system is composedof three modules: human body motion module, garment design module, andgarment simulation module. The human body motion module enables the userto design different motion behaviors by adjusting the motion patterns for eachbody part. The garment design module consists of creating garment patterns,setting their sizes, and cutting them by removing particles. The adjustment ofgarment patterns onto human body is achieved by seaming garment patternswhile applying cloth deformation and collision handling. Garment simulationmodule provides animation of virtual humans with the garments on. The mainproblem in garment simulation is collision handling between the animated virtualhuman and its garments. This study focuses on this problem. Collision detectioncalculations are reduced by using bounding volumes for both virtual human andgarments. In addition, for avoiding edge-edge collision detection, a heuristic thatconstructs a very thin volume around the human body is applied. For the collisionresponse, penalty forces and constraints are applied depending on the distancebetween the particle and the triangle?s plane, and the particle?s position withrespect to triangle. Visual results and performance experiments produced by theimplementation are presented.Keywords: mass-spring model, garment design, garment simulation, collision han-dling, cloth.iii