Prototype Based Three-Dimensional Garment Intelligent Design

Conventional computer aided garment design (CAGD) system improves the pattern design and style design efficiency greatly with the excellent function of calculating and drawing, but it is incapable of simulating the creative design thinking of fashion design. With the development of technology, the disadvantages of the conventional CAGD system become noticeable. The first disadvantage of the conventional CAGD system is that it is developed for designing two-dimensional garment style, and the designer can't see the three-dimensional style effect of their design unless the pattern are made and the sample dress are sewed. The second disadvantage of the conventional CAGD system is that it is aimed at copying the conventional garment design process and realizing interactive operation (which means the user has to tell the computer what to do step by step), so the system has to be used by the professionals and takes them a long time to master it. These disadvantages holdback the application and popularization of the system.The most effective way for quick response of fashion design is to enter the requirements of design and see the effect of 3D style on computer screen directly. This is what we called intelligent design process of 3D garment, and it is a new direction the conventional CAGD may head for. However there are few researches done in this field. In this article, we dedicate to researching on the intelligent design of 3D garment for the first time, and bring forward the prototype-based method of 3D garment intelligent design.The main content of this thesis are as follows:1. We researched on the fashion design thinking and model. Analyzed the process and mechanism of fashion design thinking, and set up the model of several common used methods of thinking in fashion design. Based on the analysis of the whole process through the conceiving of fashion style to the producing of 3D garment effect, we brought forward the prototype-based method of 3D garment intelligent design, and introduced the procedure as well as the function of the new method during the whole process of garment manufacture.2. We extracted and expressed the knowledge of fashion design. First, we analyzed the attribute of the knowledge of fashion design from the point of view of the process of fashion design and the property of knowledge. Based on this, we chose the fit expressing method of knowledge to express the different style of fashion knowledge. Thus thefashion knowledge can be expressed well, and a maturity knowledge foundation for solving the fashion design problem can be established.3. In order to control the deformation of the prototype of 3D garment automatically, we brought forward a method to set up the 3D garment prototype by using the technique of cubic spline and bicubic surface patch, and discussed detailedly about how to apply the method to set up the 3D prototype of different parts of the garment. In addition, we chose the Matlab as the modeling tools in our research work and improved the modeling efficiency greatly.4. We researched the relationships between the knowledge of fashion design and the value of the parameters of 3D prototype. First, we studied the relations between the shape of the 3D model and the parameters of the 3D model, as well as the relations between the parameters themselves. Then we expressed these relationships into algorithms and generated rules. At last, we chose collar and skirt as the examples to demonstrate the influence of the changing of values of the parameters on the style of the 3D garment.5. The process of 3D garment intelligent design is the process of fusing all the knowledge gained above. First, we built up the structure of the system of 3D garment intelligent design, and analyzed the key technology and procedure of the intelligent design. Then we studied how to organize, manage and utilize these knowledge. At last we simulated the intelligent design of 3D garment.The innovative works of this thesis are as follows:1. There are few researches done on the thinking activity...