基于层次图像缓存技术的实时红外云场景仿真

Real-time rendering of IR cloud scenes based on hierarchical image caching

针对云仿真的物理模型法和随机过程法各自的优缺点,提出了一种综合改进的办法:首先建立云团物理模型,模拟云团外形轮廓与水滴分布等细节信息;然后根据物理模型生成层次纹理,进行实时渲染。在分析了云的红外辐射特性的基础上,针对红外云场景温度场分布复杂,随机程度高的特点,提出了一种高效简化的办法:利用探测器接收到的粒子平均累积密度的波动和云团的平均温度模拟云团温度场的随机分布。在此基础上进行了仿真,仿真速度有了大幅提高。

After analyzed two basic methods for cloud simulation, an improved way was proposed, which first establishing the clouds physical model to describe the outlines and details, then computing slices of textures based on it, and finally rendering in real-time. To deal with the complicate and procedural clouds temperature fields distribution, an effective and simplified way was proposed after analyzing clouds IR characteristics, which using the accumulative average density of particles received by the IR detec...