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：2008
卷号：XXXVII Part B2
页码：875-878
出版社：Copernicus Publications
摘要：The elevation contradiction of contours is an important question in the quality checking for spatial data in geographical information system. This paper presents a new approach to check the elevation contradiction among contour lines based on the problems and shortages of the conventional approaches. This approach checked the elevation contradiction between every contour and its adjacent contour on the given side so that it can check the elevation contradictions in the whole data layer. The research makes clear that this approach runs fast, has unique checking-result, and is quicker and more convenient to find the contours. This approach has been applied in the Quality Checking system for National 1:50 000 DLG which developed by the National Quality Supervising and Testing Center for mapping products, and has achieved good results
关键词：GIS; Algorithms; Elevation Contradiction of Contours; Quality Checking for Spatial Data
