1、PDF外文：http:/ 1 - 附录 A Research on Method of 3D Reconstruction of Ancient Architecture (NanputuoTemple)10 Abstract In this paper, regarding the Great Majesty Hall of the NanPutuoTemple as a virtual modeling object, the research on the new technology of 3D reconstruction of the ancient architect
2、ure has been done, in which 3Ds Max and MultiGen Creator were applied. The conflict was solved between precision and the amount of data existing in the process of 3D modeling virtual ancient architecture. The practical project has proved that the ancient architecture model made in this way has gotte
3、n living effect in roaming system, at the mean time it satisfies the data demand of real-time rendering. Keyword： Virtual reality (VR), Ancient Architecture Protection, 3Ds Max, MultiGen Creator 1. Introduction Virtual Reality is a new man-machine interface. It provides users (participan
4、ts) with satisfactory immersed experience and multi-sensory channels, and attempts to seek the best way of man-machine communication. Using the virtual reality technology to realize the representation of ancient architecture is the innovation of architectural illustrational tools, and it is one of t
5、he hot topics of the present research. The lifelike computer modeling can not only demonstrate the profound cultural details of Chinese ancient architectures, but have practical significance to the protection of ancient architectures in form of archives, therefore it was applied more widely than the
6、 traditional physical model. The modeling fidelity and rapid real-time data rendering are the foundations of - 2 - realizing virtual reality desktop system. The project "XiamenNanputuoTemple virtual roaming system" required that virtual scenes could reach a balance between the quality imag
7、e and the speed of the rendering, and prescribed strictly the degree of accuracy and detail of every architecture. It controlled the amount of data as possible as we can on the basis of fine modeling. Regarding the Great Majesty Hall of the NanPutuo Temple as virtual modeling object, using the model
8、ing method of 3Ds Max and MultiGen Creator, the paper carried on beneficial discussion to the application of the technology in geometry modeling of ancient architectures. 2. Chinese ancient architectures features In this paper, the virtual modeling object of the Great Majesty Hall belong to im
9、itation Qing-Dynasty ancient architectures. It followed the ancient Chinese architecture major characteristics generally summarized as follows: (1) The most significant characteristic of ancient Chinese architecture make full use of timber framework. Wooden posts, beams, lintels and joists make up t
10、he framework of a house. Walls serve as the separation of rooms without bearing the weight of the whole house, which is unique to China. As a famous saying goes, 'Chinese houses will still stand when their walls collapse.' The specialty of wood requires antisepsis methods to be adopted, thus
11、 develops into Chinese own architectural painting decoration. (2) Colored glaze roofs, windows with exquisite applique design and beautiful flower patterns on wooden pillars reflect the high-level of the craftsmen's handicraft and their rich imagination. (3) The layout of a courtyard
12、 complex is also unique to china. The main structure is located on the central axis of a court while less-important structures are located to the left and right. The whole layout is symmetrical. 3. Comparison of 3Ds Max and MultiGen Creator In modeling of single complex architecture, fin
13、eness and fidelity, 3Ds Max has more advantages more MultiGen Creator. 3Ds Max provides the polygon - 3 - modeling, lofting, face modeling, NURBS face modeling, and other convenient and effective modeling method. It has a better ability of special effect processing and rendering. Using 3Ds Max you c
14、an determine precisely the size and the position of the model. After modeling, you can modify each component according to the actual need at any moment. Although 3Ds Max describes the objects' details vividly, the large amount of the data of modeling cannot meet the need of real-time rendering.
15、Compared with 3Ds Max, MultiGen Creator has less amount of modeling data. MultiGen Creator has the real-time functions of polygon culling 、 logic culling 、 priority drawing 、 binary separating plane and so on. OpenFlight is the database format of Creator. It uses hierarchical structure of nodes to d
16、escribe the database, so as to inform the image generator when and how to render real-time 3D scenes. Although Creator generates file on the small volume data, and has a rapid rendering speed, it cannot be comparable to 3Ds Max in fine modeling of single architecture. Therefore, in fine modeling of
17、complex ancient architectures, the best way is to model single architecture in 3Ds Max firstly, then import it to MultiGen Creator for simplification, and use key technologies such as LOD, to satisfy the data demand of real-time rendering. 4. Modeling processes using 3Ds Max and MultiGen Creat
18、or In the actual construction process of ancient architecture, the components are divided into the following five levels: column base level、 fitment level 、tou-kung level、 beam frame level and roof level. Each level comprises many timber components. These timber components not only have variou
19、s shapes, but also have large amounts. Therefore, the modeling method of taking the technology of integration of 3Ds Max and MultiGen Creator is more suitable for the modeling requirements of Chinese ancient architectures. Figure 1 shows the flow chart of using the technology of integration of 3Ds Max and MultiGen Creator to model the Great Majesty Hall.
