عنوان مقاله [English]
نویسنده [English]چکیده [English]
The extraction of small scale maps from large scale maps requires a generalization process. The authors of this paper describe a system for the automatic extraction of leveling lines which uses the generalization of individual lines based on a natural principle. In order to extract new levels from two initial adjacent levels, a middle-axis algorithm has been used. The system has been extensively tested using real data.
Visual surveys show that the quality of the generalized levels is very favorable.