This paper researched the relation between bend multi-branch tree of curve and multi-scale map representation based on bends as a basic structure unit of curve,and proposed the model of multi-branch tree of bend for curve shape,which was based on bend binary tree,whose defects had been pointed out.Furthermore,it brought up a generalization strategy for curve multi-branch tree of bend.The experimental results that the model is used in contour simplification show the algorithm proves very effective in the aspects of holding the shape of line feature,geographic-feature consistency.

This paper proposes a method to evaluate the level of detail (LoD) of geographic features on digital maps and assess their LoD consistency First, the contour of the geometry of the geographic feature is sketched and the hierarchy of its graphical units is constructed Using the quartile measurement method of statistical analysis, outliers of graphical units are eliminated and the average value of the graphical units below the bottom quartile is used as the statistical LoD parameter for a given data sample By comparing the LoDs of homogeneous and heterogeneous features, we analyze the differences between the nominal scale and actual scale to evaluate the LoD consistency of features on a digital map The validation of this method is demonstrated by experiments conducted on contour lines at a 1:5K scale and artificial building polygon data at scales of 1:2K and 1:5K The results show that our proposed method can extract the scale of features on maps and evaluate their LoD consistency

https://www.mdpi.com/2220-9964/9/6/410/pdf

Multi-branch tree model of bend for curve and its application in map generalization

Citations

An Evaluation Model of Level of Detail Consistency of Geographical Features on Digital Maps

References

An Evaluation Model of Level of Detail Consistency of Geographical Features on Digital Maps

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