摘要
地图信息的定量度量是地图制图学领域中的一个重要问题,也是评价制图质量、地图综合算法以及实现空间信息有效传输的基础。它不仅有助于理解空间信息的特征,而且对有效地利用空间信息也是十分重要的。本文回顾了国内外相关研究成果,指出现有研究中存在的主要问题和不足,围绕地图信息度量,从地图空间信息复杂性的角度和地图目标空间分布的角度,进行了较为深入的研究,并通过实例说明本文方法对度量线目标地图空间信息的可行性。
To measure map information is one of key issues in the field of cartography, and is also the basis of evaluating cartographic quality and generalization algorithm, and transferning to geospatial information. It is not only important for further understanding characteristics of map information, hut also for the effective use of map information. This paper developed some quantitative methods for the measurement of map information. After reviewing relevant research progress and pointing out the existing problems and deficiencies, this paper systematically studied the measurement of map imformation in theories and methods. On this basis, the moqohology operators, i. e. dilation and sequential dilation, were used to calculate line map information. Finally, a simple example was given to illustrate the advantage of the proposed approach in the paper.
出处
《测绘科学》
CSCD
北大核心
2011年第2期33-36,39,共5页
Science of Surveying and Mapping
关键词
线目标
地图空间信息度量
分形维数
信息熵
形态学算子
line object
geospatial information measurement
fraetal dimension
entropy
morphological operator
