一种新的飞机红外图像灰度量化方法

摘要

Aiming at the problem of gray level quantization for aircraft infrared image,a method of gray level quantiza-tion for aircraft infrared image based on automatic low frequency gain limiting(ALFGL)is proposed.Firstly,the prob-lems of gray level quantization are analyzed.According to the research of ALFGL circuit,a new gray level quantization method is proposed.The infrared image simulation results indicate that the proposed method can adapt to the high dy-namic range of infrared radiation,and the infrared image can reflect the high and low temperature radiation character-istics clearly.%针对飞机红外图像仿真中灰度量化存在的问题，提出一种基于自动低频增益限制的飞机红外图像灰度量化方法。首先分析了飞机红外图像仿真中存在的灰度量化问题，通过研究红外成像导引头处理高动态增益的自动低频增益限制电路原理，提出一种基于自动低频增益限制的红外图像灰度量化方法。以某型飞机的红外图像进行仿真验证，相对于以往的均匀量化方法，本文提出的灰度量化方法，可有效适应飞机高动态范围的红外辐射亮度，生成的红外图像可清晰地反映飞机的高温和低温辐射特征。