Two kinds of main data structures of the DTM are briefly introduced in the paper, which are irregular net of triangulation (TIN) and regular rectangular grid (grid).

文中简要介绍了DTM的两种主要的数据结构：不规则三角网(TIN)和规则矩形格网(GRID)。

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The paper studies the main algorithm of morphing between spatial triangle meshes, which follows former articles of scatter data triangulation.

研究了在散乱数据的三角剖分后对所形成的空间三角形网格进行变形的具体操作算法。

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