小波变换理论的线状要素制图综合研究

Study of Linear Elements Cartographic Generalization of Wavelet Analysis Method

空间数据的多尺度表达问题已成为G IS研究的重点,也是地图自动综合的瓶径,如何解决智能化的多尺度表达是迫切需要解决的问题。基于小波分析原理和制图综合原理,利用线状要素的极角变化,对线状要素进行平滑和综合,实现了线状要素数据的制图综合。

The multi-scale expression question of spatial data has become the focus in GIS field and restrained map automated integration.That how to resolve intelligentized multi-scale expression is the main question.In this paper,based on the principle of multi-resolution analysis(MRA) and cartographic generalization,using variety of linear elements polar angle,linear elements have been smoothed and summarized and implemented cartographic generalization.