内河船舶模拟器中基于过程法的河流仿真  

River Simulation Based on Procedural Method in Inland-river Ship Simulator

作　　者：翟小明[1] 尹勇[1] 神和龙[1] 肖方兵[1] 

机构地区：[1]大连海事大学航海动态仿真与控制实验室,大连116026

出　　处：《系统仿真学报》2014年第9期2189-2193,共5页Journal of System Simulation

基　　金：国家863高技术研究发展计划资助项目(2011AA110201);中央高校基本科研业务费专项资金资助(2014TD;3132013007;3132013009)

摘　　要：针对内河船舶模拟器河流视景中未体现河流流动特性,仿真结果不够真实的问题,引入了一种基于过程法的河流仿真方法,将流函数应用于河流速度场求解;并利用泊松圆盘分布的算法,控制屏幕空间的分布样式,该算法生成的粒子用于表达河流的速度场;采用经噪声扰动的河流真实纹理,叠加泊松圆盘产生的粒子,从而更真实地模拟河流表面。测试结果证明:该方法能较真实地体现河流流动特性,并增强河流视景的环境真实感。To solve the problems that do not embody the characteristic of river flowing and is not real of river simulation in Inland-river simulator, a river-simulating method based on procedural method was introduced to river simulation. River velocity fieM was solved with stream function, and a Poisson disk distribution algorithm was used to sample in screen space to guarantee uniform sampling. The particles generated by this algorithm were used to depict river velocity field. Much more real river surface could be rendered with river texture added particles that generated by the algorithm of Poisson disk distribution. The results indicate that this method can help embody the characteristic of river and improve environment reality.

关 键 词：船舶模拟器 河流 过程法 仿真 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]