文章基本信息

标题：Fuzzy spatial objects and their dynamics
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作者：Martien Molenaar ; Tao Cheng
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：1998
卷号：XXXII Part 4
出版社：Copernicus Publications
摘要：The determination of the spatial extent of geo-objects is generally approached through the boundaries or more precisely through theposition of the boundary points. The analysis of the geometric uncertainty of the objects is therefore often based on accuracy models forthe coordinates of these points. The accuracy evaluation in land surveying and photogrammetry generally refers to the mapping of crispobjects. In many other survey disciplines objects are mapped that are not crisp, in that case the geometric uncertainty is not only amatter of coordinate accuracy, but also a problem of object definition and thematic vagueness. It can not be handled by only ageometric approach such as epsilon band method. This paper proposes an approach to map the spatial extent of the objects and theiruncertainties when objects are measured from field observation data.Beyond that, this paper presents a method of detecting the dynamics of these fuzzy objects from time series. They are determined bycomparing their spatial extents at successive epochs. Simultaneously, the processes through which objects evolve are identified andare represented by several types of state transition, such as shift, merge, and split of objects. The proposed method is applied in acoastal geomorphologic study of a barrier island in The Netherlands