等高线高程自动标注算法的研究

随着数字测图时代的来临,传统纸质图上的等高线逐渐被数字化形式的等高线图(层)所取代,数字等高线的生成与处理已成为了GIS中的一个研究的热点,然而数字等高线高程自动标注算法的人性化仍是一个有待解决的问题。本文依据人们的读图习惯进行了标注的位置和密度研究,提出了一种新的等高线高程自动算法。实验证明,该算法的结果已基本满足人们的读图习惯。

Study on the algorithm of automatic digital contours elevation labeling

Coming with the age of digital mapping, traditional paper contour maps have been gradually displaced by digital contour maps, and the forming and processing of digital contours have been a focus in GIS. But adding annotation automatically to digital contours friendlily is a problem that has not been resolved well. By studying the location and density of annotations based on the people's habit of reading maps, this paper presents a new algorithm of adding elevation annotation automatically. Experiments prove that the result of the algorithm has satisfied the people's habit of reading maps.