地形等高线与经纬网的分离及其矢量化
摘 要
该文利用经纬网在局部范围的直线性及直线的平均freeman链码等于其上任意一点的链码这一特性,达到自动分离经纬网与等高线的目的,为实现等高线图扫描输入计算机的自动矢量化打下基础.
关键词
Separation of Contour Lines and Longitudinal and Latitudinal Lines and Contour's Vectorization
() Abstract
Based on straight property of longitudinal and latitudinal lines in partical scope, contour lines are separated with them automatically, by taking advantage of property that average freeman chain code of straight line is equal to it' s separate one, so as to realize automatic vectorization of contour lines.
Keywords
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