南通大学学报（自然科学版）

根据红外烟幕遮蔽条件下目标热像的特征,就利用一维直方图均衡化增强方法的对比度和清晰度不高以及损失图像细节的缺点,提出了一种基于二维直方图变换的目标热像增强方法;该方法充分利用了热像的高相关性特点,得到了较好的对比度和清晰度,保留了图像细节。采用该方法可以有效地改善目标红外像,使烟幕遮蔽目标的帧数减少10帧以上,显著减少了烟幕背景对目标的遮蔽时间

Based on the characteristic of the target thermal image under the condition of infrared smoke screen,this paper preˉsents anewtargetenhancementmethod based ontwo-dimensionhistogramtransformationinthe lightofthe lowcontrastand definiˉtion of one-dimension histogramequalization as well as the defects of some lost image minutiae.This method makes full use of the high correlation of the thermal image,enhances the contrast and definition of the target image,reserves the minutiae of the target image,improves the quality of the target image,decreases more than ten frames of target being covered by infrared smoke screen,and evidently decreases the time of being covered by infrared smoke screen.