基于数据库查找表技术的实时红外场景仿真

摘要

In order to simulate infrared scene in real time, a simulation technology is proposed:the infrared scene imaging is based on database Lookup Table which stores the scene data of geometry, physical feature, optical property and so on. The database is accessed when rendering the infrared scene, and relative data is read into the memory buffer. The data in the memory buffer is processed and shown in real time during the course of rendering images, hence the real time infrared scene simulation system is realized. The results show that the method can produce third dimension infrared images to some extent in real time, and can reach 60 frames/second in simple scene drawing and 20 frames/second in complex scene drawing. The simulating results express that the simulated images have some infrared features and are similar to the real infrared images.%　　为实时仿真红外场景，提出将数据库查找表技术引入红外场景仿真过程，用数据库存储表征场景景物的几何数据、热物理特征数据、光学特性数据等各类信息。在渲染红外场景时，直接访问数据库，将相关数据读入内存缓冲区，并在渲染过程中对内存中的数据进行处理，从而加快处理速度，提高仿真图像刷新帧频，增强仿真实时性。仿真实验表明，简单场景仿真图像帧频达60 Hz以上，复杂场景仿真图像帧频达20 Hz以上，仿真图像具有一定的红外特征，与实际场景基本相似。