中文摘要：

大面积动态海洋红外视景仿真是三维红外海战场环境仿真的重要内容,具有重要的应用价值。引入法线贴图,采用GPU着色器技术,提出了一种中波段动态海洋视景的生成方法,实现了逼真的红外海面视景实时仿真。基于矩形平面构建海洋模块,利用海面纹理的法线图,在GPU着色器中计算海面像素的辐射特性、辐射强度和方向。采用了一种基于纹理坐标操作的动态波浪模拟着色器算法实现海面法线的动态变化。提出了基于视点和视场检测的海洋模块调度策略以提高系统渲染效率。实验结果表明,该方法生成的红外海面视景渲染速度可达到80帧/s以上,满足实时仿真的要求,并能逼真地仿真中波段海面的“光斑”现象。

英文摘要：

The dynamic simulation of IR sea scene with large area is an important part of simulation of 3D sea battlefield environment, which has great application value. Using the GPU shader technique, a simulation method of dynamic infrared sea scene was presented, which introduced texture of normal map, and achieved a lifelike sea infrared real-time simulation. Constructing the infrared sea module with rectangular plane, and the radiation character, radiation intensity and direction of sea surface with normal map in GPU shader were calculated. The dynamic wave simulational shader algorithm based on texture operation was used to realize the dynamic change of normal of pixel. In order to improve the real-time rendering efficiency, view point based scheduling and view field detecting technique were proposed. The experiment shows that the rendering speed of infrared sea scene created by the method can achieve 80 frame/s, meets the requirement of real-time simulation, and can simulate the effect of facula on mid band sea surface.