基于WorldView-Ⅱ影像的呼和浩特市片区绿地覆盖信息提取

Extract Green Space Cover Information in Part of Huhhot Based on the WorldView-Ⅱ

高精度城市绿地覆盖信息的获取在园林城市建设中具有十分重要的意义。利用高空间分辨率WorldView-Ⅱ数据,通过阴影消除,用6种植被指数提取研究区绿地信息,计算绿地覆盖率,结果表明:未消除影像阴影,绿地面积将少提取0.807 km2;NDVI、EVI、ARI1、SAVI提取绿地的精度都达到100.00%,SRI、ARVI提取绿地的精度达到99.99%;研究区绿地覆盖率为23.322%。

Acquire high precision urban green land cover information is a great significance in the construction of garden city.Using the high spatial resolution WorldView-Ⅱ image as data source,through eliminate image shadow,used 6 vegetation index extract green space information in study area.Researches show that：If do not eliminate image shadow,green land area will extract less than 0.807 km2 ;The accuracy of NDVI、EVI、ARI1 、SAVI extract green space is up to 100.00％,and SRI、ARVI can up to 99.99％ ;green coverage rate is 23.322％ in study area.