基于SPOT5影像的京杭大运河自动提取研究

京杭大运河是世界上开凿最早、距离最长的运河，是活着的、流动的重要人类遗产，作为南北交通大动脉的运河，在历史上曾起过巨大作用，是物质文化遗产、非物质文化遗产和自然遗产的结合体，只有切实保护好运河，才能实现大运河成为世界文化遗产的宏伟目标。京杭大运河时空跨度大，采用传统的方法很难对其进行普查；遥感凭借其先进、便捷、经济的特点在现代考古中发挥着日益明显的作用，逐渐成为考古研究的一种重要手段，它记录了不同历史进程中运河的分布和周边现状。分析了运河在SPOT5影像上的光谱及空间特征,将遥感和GIS方法相结合，采用决策树方法实现了自动提取，并对结果精度进行了定性和定量的评估。京杭大运河自动提取可以为大运河申遗提供信息资料，为大运河保护规划提供决策支持。

Study on Automatic Extraction of Grand Canal Based on SPOT-5 Image

The Grand Canal of China is the longest ancient canal in the world and the alive heritage.As the main artery between the northern and the southern,it plays an important role in history.The Grand Canal is the combination of cultural heritage,intangible cultural heritage and natural heritage.Only by safeguarding the canal well can we realize the goal that Grand Canal can apply the World Legacy successfully.The fact that the spatio\|temporal span of Grand Canal is large made the investigation difficult especially in the conventional way.Remote Sensing plays an increasing important role in the contemporaneity archaeology by right of the advantage of advance,convenient and economic.The RS images record the distributing and the status quo of the canal in different courses of history.The article analyses the spectral and spatial feature in order to extraction the canal automatically with the RS and GIS technology.The extraction of canal can provide the information for the application for World Legacy of the Grand Canal and offer the protection layout deciding support.