摘要
用基于图论的视觉显著性算法获得目标的红外伪装效能动态量化指标。在典型的秋季草地背景下,以亮度、朝向、梯度和对比度作为目标红外伪装效率评估指标,研究背景中的红外迷彩板和某型迷彩伪装网,在一天内的实时红外伪装效率变化情况。结果表明,在特定的背景中,目标的红外伪装效率一直是动态变化的,在阳光辐射下目标与背景的温差大,导致其伪装效率低,具有极低值;在相同的背景中,采用不同伪装方式的目标其伪装效率差异明显,具体表现为因伪装网的迷彩图案与背景红外图像更匹配,故其在整个观察时段内的伪装效率较高。上述动态量化指标的价值在于既可以实时评估气象条件对同一目标的红外伪装效率的影响,又能够比较在特定的背景中不同伪装方式的优劣。
This paper reports the evaluation of the infrared camouflage effectiveness of a target by a quantitative index which is calculated on the basis of the graph-based visual saliency algorithm. In a typical grassland background in autumn, an infrared camouflage plate and a type of infrared camouflage net were used as stimulant targets to investigate their real-time infrared camouflage effectiveness, in which the intensity, orientation, gradient and contrast of the infrared images were as the evaluation indexes. The results indicated the infrared camouflage effectiveness of a target in a certain background fluctuated all the time. On the one hand, the obvious temperature difference between the target and the background under strong solar radiation resulted in the low level of the infrared camouflage effectiveness of the target. On the other hand, different camouflage patterns exhibited different camouflage effectiveness. i.e., the camouflage effectiveness of the camouflage net was higher than that of the camouflage plate, which was due to the fact that the camouflage patterns on the camouflage net matched well with the background. Such a quantitative index is of importance for us to evaluate the influence of the weather condition on the camouflage effectiveness of a target or to compare the advantages and disadvantages of a kind of infrared camouflage in a certain background.
作者
成晓鹏
邱实
赵大鹏
余大斌
CHENG Xiao-peng;QIU Shi;ZHAO Da-peng;YU Da-bin(College of Electronic Antagonize,National University of Defense Technology,Hefei Anhui 230037,China;Xi’an Institute of Optics and Precision Mechanics,Chinese Academy of Sciences,Xi’an Shanxi 710068,China)
出处
《计算机仿真》
北大核心
2021年第11期201-206,214,共7页
Computer Simulation
关键词
红外伪装
伪装效率
图像显著性
Infrared camouflage
Camouflage effectiveness
Image saliency
