摘要
近年来,太赫兹成像技术在多个领域具有广阔的应用。一套完整的太赫兹成像系统的数学模型是非常有必要的。基于点扩散函数的太赫兹图像增强模型是很好的选择。该方法将目标函数与点扩散函数进行褶积,实现了太赫兹图像的模拟传输。然后根据光学成像的过程,计算成像系统的点扩散函数。最后,基于点扩散函数对图像进行反褶积增强。该模型用于探测图像增强的结果表明,该方法有效地提高了图像的分辨率。恢复的映像包含更多细节。
In recent years,terahertz(THz)imaging technology has received increased attention owing to the promising imaging tools now available for nondestructive testing.However,theoretical models of THz imaging systems are yet to be developed.In this study,we proposed a comprehensive mathematical modeling and simula⁃tion theory for the THz imaging system.Gaussian beam distribution was used in the mathematical modeling of the point spread function(PSF).The target function was convolved using the PSF,and the analog transmission of THz images was realized.The PSF of the imaging system was calculated using the optical imaging method.Next,the image was deconvolution-enhanced using the PSF.The image restoration results revealed that the im⁃age resolution improved.The restored image contains more details.
作者
谢斌
XIE Bin(University of Science and Technology of China,Hefei 230026,China)
出处
《红外与毫米波学报》
SCIE
EI
CAS
CSCD
北大核心
2023年第2期193-196,共4页
Journal of Infrared and Millimeter Waves
基金
The Major Instrument Project(2017ZX01001301-006)。
关键词
太赫兹成像
点扩散函数
图像增强
透射成像
反褶积
terahetrz(THz)imaging
point spread function
image resolution
transmission imaging
deconvolution
