非常规天气航空成像建模与仿真方法研究

Modeling and Simulation of Aerial Imaging Under Unconventional Weather Conditions

给出了雨雾天气下户外场景图像仿真的具体流程,重点分析了点扩展函数对图像的影响,提出了根据截止角频率将一维调制传递函数转换成二维的点扩展函数的方法。仿真系统能根据不同的气象数据及无污染场景条件下的图像对不同天气状况下的雨雾图像进行仿真。

General research on analysis and synthesis of out-door scene image only considers changes in light of sunny and cloudy day,but for aviation and other practical applications,the influence of degraded images captured under fog and rain weather can not be ignored.A specific simulation flowchart of imaging for outdoor scene under fog and rain weather is given in this paper.The research on the effect of point spread function on images is carried out and the ultimate point spread function is generated,by converting one-dimensional modulation transfer function into two-dimensional modulation transfer function.With important meteorological data such as visible distance,particle correlation distance and the image from pollution-free scenes,the fog and rain image under different weather conditions can be well simulated using the algorithm proposed in this paper.