光裸地表红外辐射统计模型及纹理特征分析

自然地表的红外辐射温度场是生成红外纹理的关键.针对光裸地表红外辐射特性进行统计分析,建立了其红外辐射特性统计计算模型,利用Monte-Carlo方法计算获得其红外辐射温度场参数;结合红外辐射温度场的统计参数,利用Gaussian-Markov随机场模型生成日周期的光裸地表红外纹理.仿真试验的结果表明：该模型和方法能够真实地生成光裸地表的红外纹理,可广泛应用于红外场景仿真中.

Statistics model for IR radiance of bare terrain and analysis of texture characteristics

The radiant temperature field of the natural terrain is one of the key factors in the synthesis of its infrared textures. A statistical calculating model of infrared radiance of the bare terrain is developed based on its statistical analysis. And the Mont~Carlo method is applied to calculate the parameters of the infrared radiant temperature field of the bare terrain. Finally, the infrared textures of the bare terrain in a day are simulated by the Gaussian-Markov random field models using the temperature field data. Simulation results show that the models and the method in this study can be used to generate the real infrared textures of the bare terrain, which can be widely used in the application of the infrared scenes simulation.