虚拟战场地形重构技术研究

Research on terrain reconstruction technology of virtual battlefield

摘要:

在虚拟战场的大地形的建模中,因地形数据过大和计算机技术所限,一直没有很好的解决方案满足军事视景仿真系统的需要。文中根据战场环境地形建模的实际需求,提出了数据对称拟合的算法,可以有效地简化地形DEM数据,解决地形数据过大的问题,同时提出了基于双三次B-样条的地形重构算法,根据地形区域关注程度不同,而采用不同的地形分辨率,对地形进行细化重构,可有效地降低计算机的负荷。实践结果表明,满足了大规模虚拟战场环境三维地形视景仿真的需要。

Abstract:

In the large-scale terrain modeling of virtual battlefield, there isn’t a better resolvent limited by the huge datum of terrain model and computer technology, and cannot satisfy the requirement of martial scene simulation. In this paper, a symmetrical fitting algorithm is proposed according to actual requirement of terrain modeling in virtual battlefield; the algorithm can predigest the terrain DEM datum and solve the question of huge datum. Simultaneity, terrain reconstruction algorithm of DEM datum is proposed based on bi-cubic B-spline interpolation according to attention difference of terrain area, and using the multi-resolution terrain model can lighten computer load and process terrain reconstruction to attention area, improve the resolving power. The experimental results indicate that this algorithm is practical and applicable.