文章基本信息

标题：3D Geoexploration of the Prealpi Giulie Nature Park
本地全文：下载
作者：E.S. Malinverni
期刊名称：ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
印刷版ISSN：2194-9042
电子版ISSN：2194-9050
出版年度：2007
卷号：XXXVI–4/W45
出版社：Copernicus Publications
摘要：The aim of this research is focused on the development of an Open Source platform that would provide a 3D interactive and flexible geo-visualization of spatial data coming from geographic information system (GIS). The application regards the cross-border spatial databases connecting the Prealpi Giulie Nature Park (Italy) and the Triglav National Park (Slovenia). Efficient methods were developed for data processing and data diffusion in a transnational Geo-portal by MapServer. To augment the realism of the product, from the bi-dimensional representation to the three-dimensional one, we adopted the Virtual GIS solution. The Virtual Reality in the GIS allows the visual data access in a 3D context and some real time performances. So in this project we had some opportunities to implements different scenarios improving the understanding of the landscape and allowing a virtual walk inside the park areas. This needs appropriated visual-display techniques and data-mining methods. We used Virtual Terrain Project (VTP), an Open Source software, suitable to construct any part of the real world in interactive 3D digital form. VTP supports a set of software tools: VTBuilder, which elaborates geo-referenced data to represent them in two dimension and Enviro, an interactive runtime environment, which creates virtual three-dimensional scenarios and allows the 3D navigation. Every data management is performed by internal routine but it is possible to personalize them for specific purposes as in agreement with the Open Source code. The management of the 3D data lets to work at different levels of detail. The algorithm LoD (Level of Detail) performs detailed analysis on the data and is useful to simplify the displayed procedures applied both to the textures and to the meshes of the ground. Fluidity of movement is a fundamental requisite for the Net. The field of employment is devoted to virtual tourism, travel planning, land use, urban planning, civil engineering and disaster management for the analysis and for the assessment of environmental impact. The obtained 3D flight over the Prealpi Giulie Mountains is very suggestive and, not only but moreover, it can be useful for the knowledge of this environment and to solve any related problems
关键词：GIS; Open Source; DEM; 3D exploration; surface modelling; landscape; navigation; Web dissemination