摘要： 地图的手工矢量化是一项耗时、费力的工作。该文根据彩色地图中河流的特点，提出利用改进的Snake模型提取地图中的河流。通过对地图中河流线的结构特征进行统计分析，寻找河流线基元；利用改进主动轮廓模型的自动跟踪功能，实现河流的最终提取。实验结果验证了本算法的有效性。

关键词: 地图, Snake模型, 河流, 提取

Abstract: The manual production of vector topographic maps can be a time consuming and costly process. In this article, based on the river characteristics on topographic maps, an improved Snake model is employed to extract river. Through statistical analysis of river structural feature on topographic map, river primitives are searched. Utilizing automated tracking function of an improved snake model extracts river finally. Validity of this algorithm is verified by experimental results.

Key words: Topographic map, Snake model, River, Extraction

中图分类号: 

• TP391