摘要
利用三次卷积法对数字地形数据进行内插,获得了足够的三维地形数据,解决了由于格网地形数据有限,必须采用内插的方法以获得足够的三维数据问题,实现了三维地形数据内插和三维模拟,取得了较好的效果,为复杂地形的三维地形建模提供了一种新的方法。
We appliy cubic convolution interpolation function to interpolation of the digital map data.A third-order approximation forterrain surface with a continuous third derivative can get adequate digital map data to solve the issue that the digital map date is limited and get adequate date by interpolation.Basd on Matlab,we realize interpolation for digital map data and three dimensional modeling.The result shows the method has a good outcome and gives a new method for three dimensional modeling of complicated terrain.
出处
《测绘信息与工程》
2011年第3期36-38,共3页
Journal of Geomatics
