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：2002
卷号：XXXIV Part 4
出版社：Copernicus Publications
摘要：The rapid changes in map-based technologies caused a complexity in spatial data and increased user demands and expectations from Geographic Information Systems (GIS). Considering this reality, Spatial Data Integration (SDI) needed to be taken into account by National Mapping Agencies and companies for developing strategies to have better data (complete, standard, robust and flexible) for a wide public use of GIS applications. On the other side, visualization became an essential process in data integration facilities as it was used in every stage in GIS, besides providing useful cartographic representing capabilities in 3-D environment. This paper presents an overview of spatial data integration from different aspects and explores the role of visualization in this context. In the content of this paper it is also examined how to use analytical and visual types of derived information in solving spatial problems by presenting an implementation study related to the construction of obstacle free zones for aerodromes. Obstacle Limitation Surfaces (OLS), the topography and man-made objects were used as cartographic input layers in determining dangerous objects for aircraft and final analyses results were presented with 3-D screen displays. Consequently, it was perceived that visualization removed the limitations of GIS and modern cartographic developments provided visual cognition of multi-dimensional spatial problems
关键词：GIS; Obstacle Limitation Surface; Visualization; Spatial Data Integration; Analytical and Visual Integration
