3d terrain modeling and visualization are hot research topics in GIS, computer graphics, virtual reality, digital photogrammetry and other associated fields.
三维地形建模及可视化是GIS、计算机图形学、虚拟现实、数字摄影测量等领域的研究热点。
Digital Elevation Model(DEM) is a digital modeling process which aims at terrain and physiognomy. Irregular triangulation TIN is the best model when DEM data are stored and expressed.
数字地形模型是针对地形地貌的一种数字建模，这种建模的结果通常就是一个数字高程模型（DEM）。
Digital Elevation Model(DEM) is a digital modeling process which aims at terrain and physiognomy. Irregular triangulation TIN is the best model when DEM data are stored and expressed.
数字地形模型是针对地形地貌的一种数字建模，这种建模的结果通常就是一个数字高程模型（DEM）。
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