| 利用卫星立体影像生产DEM的关键技术研究 |
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| 引用本文： | 林璐,谭龙,王爽,梁爽.利用卫星立体影像生产DEM的关键技术研究[J].北京测绘,2021,35(2):157-160. |
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| 作者姓名： | 林璐 谭龙 王爽 梁爽 |
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| 作者单位： | 自然资源部第二地形测量队,陕西西安710054 |
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| 摘 要： | 在利用国产资源三号卫星立体影像制作DEM产品过程中,通过遥感手段利用NDVI和NDWI对植被、水域等要素范围边界进行快速提取,实现了数据制作过程中滤波环节准确性和适应性的增强,进而达到了对DEM产品精度提升和制作效率提高的目的。由此形成的技术方案可以为全球地理信息资源建设与应用提供参考。
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| 关 键 词： | 资源三号卫星 数字高程模型(DEM) 归一化植被指数(NDVI) 归一化水体指数(NDWI) 滤波 边界提取 |
Research on Key Technologies of DEM Production with Satellite Stereo Image |
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| LIN Lu,TAN Long,WANG Shuang,LIANG Shuang.Research on Key Technologies of DEM Production with Satellite Stereo Image[J].Beijing Surveying and Mapping,2021,35(2):157-160. |
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| Authors: | LIN Lu TAN Long WANG Shuang LIANG Shuang |
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| Institution: | (The Second Topographic Surveying Brigade,Ministry of Natural Resources,Xi’an Shaanxi 710054,China) |
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| Abstract: | In the process of producing DEM by using the stereo images of China-made ZY-3 satellite,NDVI and NDWI were applied to extract the boundary of vegetation,water area and etc.In this way,the accuracy and adaptability of the filtering process were enhanced,and the accuracy and efficiency of DEM production was improved.The technical scheme could provide reference for the construction and application of global geographic information resources. |
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| Keywords: | ZY-3 satellite Digital Elevation Model(DEM) Normalized Difference Vegetation Index(NDVI) Normalized Difference Water Index(NDWI) filtering boundary etraction |
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