吕言. 数字地面模型中多面函数内插法的研究[J]. 武汉大学学报 ( 信息科学版), 1981, 6(2): 14-28.
引用本文: 吕言. 数字地面模型中多面函数内插法的研究[J]. 武汉大学学报 ( 信息科学版), 1981, 6(2): 14-28.
shu
Lü. On the Multisurface Function Method in DTM Interpolation[J]. Geomatics and Information Science of Wuhan University, 1981, 6(2): 14-28.
Citation: Lü. On the Multisurface Function Method in DTM Interpolation[J]. Geomatics and Information Science of Wuhan University, 1981, 6(2): 14-28.
shu

数字地面模型中多面函数内插法的研究

On the Multisurface Function Method in DTM Interpolation

    摘要
  • 摘要: 本文对数字地面模型内插法中较为知名的多面函数法的特征进行了分析研究。研究结果选用了十分简单的三次曲面作为多面函数的核函数,其效果优于Hardy所采用的双曲面方法。这种三次曲面法具有无需任何待定参数且适应于各种地形等优点,示于若干实际算例中。

     

    Abstract: In this paper the characteristics of one of the well known DTM interpolation method,the multisurface function method,are studied.As a result,a very simple cubic surface as kernel function of the multisurface function without any parameter has been found to be better than the hyperboloid one which was highly recommended by Hardy.This cubic surface is suitable for any type of terrain as shown in some computation examples.

     

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