一种基于方向检测的等高线分离方法1

A method for classifying contour line based on angle detecting

提出了一种地形图上等高线分离方法,方法建立在基于方向检测的线宽识别算法基础上,使等高线分离具有很强的宽度敏感性,同时由于在线宽识别过程中考虑了等高线的空间连续性,方法具有很好的分离效果。实践证明,算法可以为等高线进一步矢量化提供高质量的底图,减少等高线自动矢量化的后续编辑工作量,具有很强的实际意义和理论价值。

A method for classifying contour line on the topographical maps based on the angle detecting is presented. It can detect the subtle changes of the line width and keep the continuity of the contour line as far as possible. This method can produce a better base map for the vectorization.