基于修正函数的动态地形改造

Dynamic Terrain Modification by Correction Function

在虚拟地形中加入新的地物目标,需要改造地形以使地形与地物匹配。对每个待插入的地物点定义一个修正函数,由于高斯函数本身的特性,这里以高斯函数为模型改造地形。根据修正函数调整每个相关的地形点坐标,如果调整后达到预设精度,则不继续调整地形。若没有达到精度,通过加密地形点使得地形趋近于高斯函数模型,调整后的使地形与地物自然地结合起来。

Adding newly-described targets in virtual terrain environment may need adjust the elevation of terrain so that the terrain surface will smoothly fit the targets. The approach adopted in this paper was to define a correction function over the whole database. This paper used Gauss function as the terrain modification model due to its characteristic. Then the correction function was added to every corresponding point of the terrain in the original database if precision had met our requirements, the modification was over. Otherwise, the terrain points may continue to be added until reaching he precision and the terrain will exactly conform to the targets.