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 。
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.
出处
《中国图象图形学报（A辑）》
CSCD
2000年第2期167-169,共3页
Journal of Image and Graphics
关键词
等高线
经纬网
分离
地形等高线图
Contour line, Longitudinal and Latitudinal lines, Chain code of straight line, Separation
