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：2005
卷号：XXXVI-2/W25
出版社：Copernicus Publications
摘要：With the development of the technique of multiple dimension GIS databases, the problem of the key-scale becomes an important technical problem. The paper presents a new method about how to determine the key-scale based on the theory of the information attenuation. From the large-scale to the small-scale, the self-similarity of map object descends gradually, and reflects as the change of the map information. Make use of the extend fractal model of inverse "S" can help to determine the key-scale between any two scales section. This method is better pertinent and self-adaptability and significativly to do further research
关键词：map generalization; Information attenuation; GIS; spatial information; key-scale; extended fractal
