Personalized Garment Design And Real-time Virtual Cloth Try-on

With the rapid development of the fashion industry,the apparel market has gradually exhibited the characteristics of diversity,small-batch,fashion,and personalization.In the future,people will no longer be satisfied with the garments in batch production,but seek to tailor the clothes which meet their own body and aesthetic.The traditional process of designing garment is costly and labor intensive.It requires many iterations of pattern design,sample fitting,and correction.Therefore,computer-aided cloth design and virtual try-on has been a key research area in graphics.In this thesis,we study a few technologies involved in the personalized clothing design and physics simulation based real-time virtual fitting.We have implemented an interactive apparel design system that includes the following key functions: inputting human body model's parameters,adaptive adjustment of 2D clothing pieces to match the human body,interactive edit of the 2D pieces and fast mapping to 3D clothing space,3D real-time virtual fitting employ multiple techniques,etc.The main functions are embodied in the following aspects:In the aspect of the adaptive adjustment of 2D clothing pieces,for different body models,this thesis comprehensively uses feature points,feature lines,erase allowance and other characteristics in 3D garment modeling to establish a quantitative optimization objective function.Meanwhile,three kinds of algorithms for adaptively adjusting the clothing pieces are proposed.As a result of the body-shape adaptation of personalized clothing,various styles of clothing templates can be automatically adjusted to match any given human body model.In 2D interactive design,to accelerate the iterative process of 2D clothing design and 3D wearing effect display,a fast mapping algorithm based on nonlinear sensitivity prediction between 2D style space and 3D fitting space is adopted in this thesis.The algorithm ensures that editing changes made in the 2D clothing style space can be mapped to the corresponding 3D clothing changes in real time.It enables the user to watch immediate wearing effect as a feedback of the editing operation.In the real-time virtual fitting,this thesis combines the StVK membrane model and the quadratic and isometric bending model to simulate the physical properties of a fabric.A penalty force model is applied in the treatment of seam.In order to achieve real-time virtual fitting,a signed adaptive distance field is one-time precomputed for fast collision detection.In addition,in the process of numerical time integration,the preconditioning conjugate gradient method combined with the kinetic damping method is used in this thesis to quickly solve the stable draping of a garment.