期刊名称:Archiwum Fotogrametrii, Kartografii i Teledetekcji
印刷版ISSN:2083-2214
出版年度:2012
卷号:23
语种:English
出版社:Main Board of Association of Polish Surveyors
摘要:In this paper the algorithm for determining invariant points of spatial objects was presented as implemented on the data of Great Britain’s coastline. Invariant points (cartographic warp) were determined as a linear object feature for its simplification in a process of digital cartographic generalisation. Invariant points provide spatial objects with hierarchy and,consequently,can increase trust towards the simplification results. Determination of the invariant points can be preceded by a simplification process carried with the unambiguous/objective methods depending only on the scale of a processed map (scale-driven methods) as well as with use of point reduction algorithms. Determination of the invariant points is proceeded during the process of preparation of the data to its implementation in a Digital Landscape Model (DLM) in a Multi Resolution/Multi Representation Data Base (MRDB). The results of the process of determination of the invariant points show,that this feature can be determined in an automatic way for the open or closed polylines.
其他摘要:W pracy zaprezentowano algorytm służący do wyznaczania punktów stałych obiektów przestrzennych na przykładzie fragmentu linii brzegowej obszaru Wielkiej Brytanii. Punkty stałe (osnowa kartograficzna) zostały wyznaczone,jako atrybut obiektu liniowego,do je
关键词:automation;DLM;cartographic generalization;coastline;MRDB;invariant poits of an oblect;points reduction;simplification;scale-driven generalisation
其他关键词:automatyzacja;DLM;generalizacja kartograficzna;linia brzegowa;MRDB; punkty stałe obiektu;redukcja punktów;upraszczanie;generalizacja jednoznaczna