Research And Implementation Of Key Techniques Of 3D Virtual Fitting

With the development of social economy, online shopping becomes a big trend. We are unable to accurately determine whether the apparel appropriate only through the two-dimensional images and language description online. 3D virtual fitting technology arises at the historic moment, and it becomes research difficulties and hot spots in the fields of virtual reality and digital clothing. The key technology of 3D virtual fitting is studied, and set up a 3D virtual fitting system.First, on the basis of 3D human body library, parameterized method combined with differential domain methods, a method of dimension driven human body deformation is discussed. First of all, classify human body in order to establish a human body library. And then extract the model feature points and feature sizes, and establish corresponding relation between the body size change and the control point position change. Regard the control points position obtained by body size change and fixed anchor as constraint set of Laplace transform, according to the property of Laplace coordinate local geometric details to retain, map the body feature sizes to a general 3D human body model. Finally realizes the size parameters driving the virtual human body deformation.Second, garment cloth modeling is based on particle spring model. The garment is discrete into a particle system connected by springs. Analyze of the particle force, and according to Newton’s second law to establish equation of motion. After several numerical integral method experiments to compare, choose Verlet numerical integral method for numerical equations of motion. At the same time, the dithering phenomenon and the super-elastic phenomenon are separately carried on the experimental study and discussion.Third, based on the automatic generation method of symmetrical garment panel suture points, we put forward improvement in the level of the program. Clothing information is divided into front panel and back panel, each garment pane is divided into border point information and internal point information, and they are stored in the program respectively. After the program time complexity of analysis, it proves that the improved method improves the efficiency of suture points automatically generated.Finally, using VS integration environment, the c++ programming language and Open Graphics Library in Windows platform simulates a virtual fitting system. Users can choose in line with their own size in size library, modify the size parameters of the model to create their own virtual model. At the same time, in the clothing and texture library they can choose clothing type, etc., try and show the effect.