摘要： 论述了地形图和其它工程图件上某些线目标数字化的一般方法,着重阐明了有向线目标扫描数字化的必要性和理论方法,并依据进一步的试验和生产应用情况验证了这种数字化方法的正确性。

关键词: 有向线, 数字化, 自动跟踪

Abstract: The general methods of digitising linear objects on the topographic maps and engineering maps are introduced. The necessity and algorithm of digitising for the directional & linear objects are emphatically suggested. And more, according to the results of test and application ,the availability of the digitising algorithm is proved.

中图分类号: 

• TP399