旅游景区三维可视化研究

【作者】 朱元嫣；

【导师】 陈能；

【作者基本信息】 上海师范大学 ， 自然地理学， 2008， 硕士

【摘要】 当前,旅游业已发展成为中国第三产业的中流砥柱,对社会、经济发展影响巨大。为了对旅游资源信息进行统一管理,为资源的进一步开发提供依据,也为了给游客的观光提供相关的数据服务,各旅游景区的管理部门纷纷部属了地理信息系统。然而,传统的地理信息系统基于二维空间数据,无法在旅游资源信息管理的同时再现旅游景区的三维场景,从而无法使人们对旅游景区的总体风貌有一个直观、真实的印象。因此,如何利用三维可视化技术,结合旅游行业自身特点,以传统的地理信息系统和虚拟现实技术为依托构建三维虚拟旅游景区已经成为了一个重要研究方向。本文将就这一方向展开深入研究:①以旅游景区的三维场景构建为目标,探讨了其三维可视化方法,主要从自然景观和人文景观两方面阐述景区地理信息的可视化表达方法。②通过对多类数据进行综合处理,包括自然景观可视化中的航片数据处理、地形图数据处理等以及人文景观可视化中的地面近景摄影图像处理、属性数据处理等,以江心屿为例,构建该旅游景区的虚拟地理环境。③以旅游景区为研究对象,分析其三维可视化过程中数据源类型的选择及分类、多种数据质量控制方法以及场景优化与融合等关键技术。更多还原

【Abstract】 Nowadays, tourism has become one of the most important pillars in the tertiary industry of China, which has a huge influence on the development of China’s society and economy. In order to manage information of tourist resources, to make further development of tourist spot based on such information, and to provide tourists with data services relevant to various spots, local governments of different tourist spots have deployed Geographic Information System, known as GIS, to do the job. However, traditional GIS only runs smoothly on two dimensional spatial data, and it can not realize the 3D visualization of a tourist spot while managing the information of its tourist resources, which will prevent people from gaining a direct and real impression of the overall scenery of a tourist spot. Therefore, how to use the knowledge of 3D visualization and that of the characteristics of the tourist industry to construct 3D virtual tourist spot based on techniques of traditional GIS and Virtual Reality has become an important research trend. This paper will have a deep study on such topic. First, collection and processing of tourist spot information will be researched. A method called Picture Positioning will be utilized to categorize pictures taken on the scene. At the same time, efforts will be put to discuss the importance of historic information collection both in the field and from relevant documents. Then, with all the scenes in a tourist spot, there is a need to distinguish the natural landscape with the human landscape, and to model these landscapes respectively. After that, emphasis will be greatly put on the 3D presentation of modeled data and attribute data. The former will include natural landscape data, stratigraphic data and human landscape data, while the latter takes information of cultural landscape with non-physical forms. All these data will occupy huge amount of disk space and lay a burden which the calculation capacity of a computer can not take. Therefore, efforts should be made on two aspects. On one hand, data volume collected at the phase of data collection should be optimized. In order to do this, selection of the photographic equipment used on the scene and data source like topographic maps and remote sensing images with different resolutions should be researched. On the other hand, triangle network optimization techniques like edge collapse, triangle collapse, cell collapse and vertex removal should be used to optimize the 3D virtual tourist spot, and algorithms like back-face culling and clipping should also be used to improve its rendering efficiency.更多还原