摘要
虚拟战场环境仿真中构建大规模地形时,常用的三次B样条曲线拟合方法生成的地形,无法满足战场地形的高精度要求。本文在基于线性约束最小化生成曲线基础上,提出了一种利用线动成面原理、截面特征重构曲面生成地形曲面的方法。为了修复曲线曲面的精确性,不断地找出数据点与曲线曲面偏差最大点,利用曲线曲面复杂度指标自适应地添加新特征点,反复迭代直到满足要求的误差精度。通过对实际高程数据值插值地形进行实验,得出运用该方法拟合的地形图更精确、更逼真。该算法主要用于对大地形中重点关注区域进行地形重构,以提高局部地区的分辨率和逼真度。
Construction of a virtual battlefield simulation for large-scale topography,commonly used three times B spline curve fitting method to generate the terrain,which can＇t meet the high precision demand of battlefield terrain.This paper based on the minimization of linear constraint to generate curve.A line moving into the surface using the principle of cross-section features terrain surface reconstruction surface generation methods was proposed.In order to repair the accuracy of curves and surfaces and continue to find the deviation of data points and the maximum point of curves and surfaces,using indicators of the complexity of curves and surfaces adapt to add new feature points and iterate result until the errors meet the accuracy requirements.Values by interpolation of the actual terrain elevation data obtained by experiments using a topographic map of the fitting method is more accurate and realistic.The algorithm is mainly used in large and concerned areas for terrain reconstruction to improve in some areas of the resolution and fidelity.
出处
《电子测试》
2011年第8期42-44,103,共4页
Electronic Test
基金
太原市2009年科学技术发展计划资助项目(0904009)
