红外热像仿真中光学系统渐晕效应模拟研究  

Simulation of the vignetting effect resulted from optical system in infrared image generation

作　　者：陈治宣[1] 周晓东[2] 娄树理[2] 

机构地区：[1]海军航空工程学院研究生管理大队,山东烟台264001 [2]海军航空工程学院控制工程系,山东烟台264001

出　　处：《电光与控制》2007年第6期166-169,共4页Electronics Optics & Control

摘　　要：渐晕效应是红外光学系统普遍存在的现象,对红外成像质量的影响比较大,因此要逼真生成通过光学系统的红外仿真图像离不开渐晕效应的准确模拟。系统地提出了红外光学系统渐晕效应的仿真思路,通过光线追迹的方法对红外光学系统渐晕效应产生机理进行分析,建立渐晕效应模型,然后结合基于图像像素处理的方法对该效应进行建模仿真,并给出了仿真结果。从实验结果看,该模型的渐晕效应仿真效果较理想,有助于提高红外图像生成的逼真度。Vignetting effect is a common phenomenon in infrared optical system, which has great influence on the quality of infrared image generation, Therefore, the exact modeling of the vignetting effect is vital for generating an infrared simulation image through optical system. A simulation method of the vignetting effect resulted from infrared optical system is presented. The cause of the vignetting effect is analyzed theoretically by using ray tracing method, and the model of the vignetting effect is established. Then simulation is carried out for the vignetting effect based on image pixel processing. The simulated result is presented. Experiment showed that the simulation method of vignetting effect is effective, which is useful for increasing the fidelity of the generated infrared image.

关 键 词：红外成像系统 渐晕 光学系统 红外仿真 

分 类 号：V246[航空宇航科学与技术—飞行器设计] TN21[电子电信—物理电子学]