Schematizing Maps: Simplification of Geographic Shape by Discrete Curve Evolution
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- 作者：Thomas Barkowsky ; Longin Jan Latecki ; Kai -Florian Richter
- 刊名：Lecture Notes in Computer Science
- 出版时间：2000
- 出版年：2000
- 期刊代码：99_0302-9743
- 类别：cp
- 卷：1849
- 期：1
- 页码：41-53
- 数据来源：sp
摘要
Shape simplification in map-like representations is used for two reasons: either to abstract from irrelevant detail to reduce a map user’s cognitive load, or to simplify information when a map of a smaller scale is derived from a detailed reference map. We present a method for abstracting simplified cartographic representations from more accurate spatial data. First, the employed method of discrete curve evolution developed for simplifying perceptual shape characteristics is explained. Specific problems of applying the method to cartographic data are elaborated. An algorithm is presented, which on the one hand simplifies spatial data up to a degree of abstraction intended by the user; and which on the other hand does not violate local spatial ordering between (elements of) cartographic entities, since local arrangement of entities is assumed to be an important spatial knowledge characteristic. The operation of the implemented method is demonstrated using two different examples of cartographic data.