本文提出了一种红外图像仿真方法。首先对目标在探测波段内的辐射强度的组成和光谱分布特点进行了分析,并对目标的辐射强度、光谱分布和运动等特征量进行了模拟。然后根据大气和成像系统的调制传递函数建立了相应的大气效应模型和成像系统效应模型。最后根据红外成像原理并结合探测器参数,将目标的仿真模型与实拍的背景红外图像通过图像合成算法进行融合,从而实现了目标与场景的快速生成。该方法通过理论数据和实验数据的结合,提高了场景的可靠性,对于测试和评价红外搜索跟踪系统具有一定的参考价值。

An infrared image simulation method is proposed. First, the radiation intensity and spectral distribution of a target in the detection waveband are analyzed and simulated. Then, the corresponding atmospheric effect model and imaging system effect model are estab!ished according to the modulation transfer functions of the atmosphere and the imaging system. Finally, in accordance with the infrared imaging principle and the detection parameters, the simulation model of the target is fused with the infrared image of the real background by using the image synthesis algorithm. Thus, the images of the target and scene are fast generated. The reliability of the scene is improved by combining the theoretical data with the experimental data. The method is of reference value to the testing and evaluation of an infrared search and track system.