Quantitative Relations between Morphostructural Similarity Degree and Map Scale Change in Contour Clusters in Multi-Scale Map Space

This paper aims to propose a new approach calculate the quantitative relations between morphostructural similarity degree and map scale change in multi-scale contour clusters for automatic generalization. Terrain lines were extracted by pre-processing of unclosed lines, an indirect expression method relation was proposed based on terrain line hierarchical trees. Thirteen groups with different drainage areas loess geomorphy employed explore changing regularity indices scale. Finally, calculated using 52 points. The results show that power function is best fit among candidate functions, can be expressed same function, which facilitates automation