【摘要】 地形等高线的识别是地理信息系统领域里十分重要的课题。本文提出的等高线自动识别方法 ,首先通过对粗长线条的自由端进行匹配 ,来提取进而识别等高线的高度数据 ;然后利用长线条之间的邻接关系 ,从已知高度值的等高线出发 ,识别出地形图中其余等高线。本文最后提出了一个实例 ,并对这一方法进行了讨论更多还原

【Abstract】 Contour line extraction is a very important task in the field of GIS. In our method, the height strings of contour lines are picked up if they are located in limited areas around two free tops of long and fat lines. The strings are then be recognized and the height values are stored in relative data structures of contour lines. From those contour lines which heights have been recognized, the heights of other contour lines can be calculated. One experimental result is provided and the features of this method are discussed at the end of this paper.更多还原