针对红外场景仿真中纹理映射真实感欠缺,实用性和灵活性较弱的问题,考虑到实拍图像在多方面的局限性,提出了基于红外图像灰度差值调制模型的纹理生成方法.该方法以实测某时刻红外图像为基础,实施材质分类后将材质灰度与其灰度均值进行逐像素差值运算,得到主要景物材质的灰度差值分布,利用传热学理论求出景物在一天内其它时刻的均值温度,再模拟红外成像系统工作过程将其量化为对应灰度均值,并与灰度差值分布进行调制,生成仿真时刻的红外图像.实验结果表明,利用该方法生成的红外纹理图像兼具较高的真实性和可靠性,能够满足仿真应用要求.%Aiming at problems of texture mapping realistic deficient in infrared scene simulation and being weaker in practicability and adaptability, considering limitation of measured images in multiaspect, an infrared texture generation method is proposed based on gray level difference modulation model of infrared images. This method based on measured waveband infrared images at one point, per pixel difference operation was conducted between materials gray level and its mean gray level after classifying materials, to obtain gray level difference distribution of main scenery materials, mean temperature of photographic field in other moments a day was received by using the theory of heat transfer theory, then corresponding gray-scale average which simulated working process of infrared imaging system was quantized, and infrared images were generated through modulating with gray level difference distribution. The experimental results indicate that infrared texture images generated by using this method possess both facticity and reliability, and can meet the requirements of simulation application.
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