3D面控制在三维分形地形中的应用

摘要

讨论了在应用中点位移的方法逼近分形布朗曲面时，结合3D面控制网格点高度的算法构造地貌表面特征。提出了将三维地理数字信息转为三维地形图时，模拟复杂的不规则地形的快速算法。从而大大地减少了数据输入、降低了系统资源的占用率。应用该算法绘制地形地貌取得了良好效果。%The thesis advance an idea in using 3D face to control the height of grid points of fractal landform which based on the Fractal Brown Motion (FBM) theory. This idea lead to a calculating method by which we could decrease the number of input data and the occupation rate of system resources when we transform 3D geography data information to 3D map, and consequently make good effect.