基于等高线特性的三维表面重建方法的研究

研究了相邻等高线形状的变化规律,得出相邻等高线形状变化具有相似性的结论,而决定这种相似性的根本因素是相邻等高线之间的三维地形高程起伏变化的自然情况。以该规律为理论依据,研究出了一种基于等高线相似性变化特性的三维表面重建方法。实验结果表明,该方法能够充分利用等高线所含有的地形高程信息,较好地实现三维表面重建。

3D Terrain Surface Reconstruction with Contour Data

In this paper, the shape of contour line is studied with geometry theory. It is concluded that the shape of neighbor contours change similarly. This similarity reflects the terrain surface changing within the neighbor contours. A new method for reconstruction of terrain surface is put forward with similarity rule. It bases on the theory of potential field in physics. The new method can make full use of the information in original data. It can overcome some shortcomings of traditional method. The experimental results show that the terrain surface reconstructed by the new method contains more detail information than that by traditional method, and it can reflect the real terrain variations within the neighbor contours.