地形特征线提取方法的研究进展

Research Progress on Extraction Method of Terrain Features Lines

地形与地貌是数字地形分析中重要的自然地理要素,数字高程模型中蕴含着丰富的地形地貌信息,从中提取地形特征线信息是当前地学研究的热点之一。目前,很多学者使用不同的方法来研究地形特征线的提取,但是仍然存在着许多不足之处。本文对这些方法进行了介绍,对各种方法的研究现状展开综述并分析了优点和不足,最后对特征线提取方法存在的主要问题进行总结和展望。

Terrain and landscape play important roles in physical geography of digital terrain analysis. Because digital elevation modelcontains rich landscape information, extracting terrain features from it has already been a topic. Many researchapplied different methodsfor extracting terrain features, however, there have some limits in those means. The paper will introduce those methods used in thisfield and compare advantages and limits with those methods. Last, we will summarize the major problems existing in our introductiveand predict the trend in this territory.