摘要
介绍了空间目标/星空背景动态红外图像仿真的实现。首先,建立空间目标的几何模型,并对空间目标进行受热分析,建立空间目标外表面的红外热辐射模型,将计算结果量化形成灰度值,生成空间目标的红外图像;其次,将背景红外图像生成中常用的理论模型法与实际场景红外图像目标剔除法相结合,提出一种星空背景红外图像生成方法,即恒星在大气层处的红外辐照度不通过理论模型求取,而是由红外星表数据简单计算得出,将计算结果量化形成的灰度值赋予通过计算机生成恒星的几何视图,生成星空背景的红外图像;最后,将已生成的空间目标红外图像与星空背景红外图像的灰度归一化,进行灰度层次上的合成,同时,以红外传感器视轴指向作为图像的中心进行空间层次上的合成,最终生成完整的空间目标/星空背景红外图像。
The implementation of the dynamic IR image simulation on space target/star and space environment was introduced. Firstly, by establishing 3D model of the space target, the heated condition of space target was analyzed, and the infrared heat radiation model of the target outer surface was built. The calculation results were quantized into gray-scale value, and the IR image of the space target was generated. Then, a new hybrid method, which combined traditional theory-model method with the method of eliminating targets in the IR image of real scene, was used in the IR image simulation on star and space environment. At last, the generated IR image of space target with the IR image of star and space environment were synthesized by gray scale normalizing in the gray level. And, the images were synthesized according to the optical axis direction of the IR sensor in the space level. Meanwhile, the whole dynamic image of space target/star and space environment was synthesized.
出处
《红外与激光工程》
EI
CSCD
北大核心
2010年第3期399-404,共6页
Infrared and Laser Engineering
关键词
空间目标
星空背景
红外辐射
红外成像仿真
Space target
Star and space environment
IR radiation
IR imaging simulation
