摘要
针对远距离红外弱小目标检测算法的研究和性能评估需要大量测试图像的现状,提出了一种基于非线性映射模型的红外弱小目标图像仿真方法。首先,通过理论计算和实际拍摄得到实验目标的辐照度与成像灰度值映射数据,并利用该数据对多种备选映射模型进行评估,得到最佳的基于拟合的非线性映射模型;然后,将该映射模型应用到实际目标图像的仿真过程中,得到能反映实际亮度变化的目标仿真图像;最后,考虑大气传输效应等因素的影响,将目标仿真图像与真实背景图像进行合成,得到最终的红外弱小目标仿真图像。通过与传统仿真方法对比,该仿真方法产生的仿真图像具有较强的真实感。
As the study and evaluation of the long distance infrared dim-small target detection algorithm requires a large amount of test images, a method of the IR dim-small target image simulation was proposed based on nonlinear mapping model. First, the irradiance and imaging gray value were got by theoretical calculation and actual shooting. By taking advantages of the data the various alternative mapping models so as to get the best mapping model were evaluated. Then, the mapping model was applied to the simulation process of actual target image and the target simulation image was got which reflected the real brightness variations. Finally, considering the effect of atmospheric transmission and so on, the target simulation image was combined with real background image to get final infrared dim-small simulation image. By comparison with the traditional simulation method, this proposed simulation method has more sense of reality.
出处
《红外与激光工程》
EI
CSCD
北大核心
2013年第11期2919-2924,共6页
Infrared and Laser Engineering
基金
国家自然科学基金(61102131)
重庆市科委自然科学基金计划资助项目(2010BB2411)
重庆市高等学校青年骨干教师资助计划(渝教人[2011]65号)
关键词
红外图像仿真
非线性映射模型
目标几何模型
infrared image simulation
nonlinear mapping model
target geometry modeling
