摘要
了解散射介质中的点扩散函数(PSF)对于生物医学成像、大气科学和光通信等各个领域都至关重要。深入研究了不同波长下散射介质中PSF的特性,通过对光场函数进行理论推导和实验验证,阐明了散射介质中PSF和波长之间的关系。不同波长下PSF之间的相关性主要由放缩比例因子和等效相位掩模共同控制。通过对等效相位掩模进行分析和预测,提出了一种加权平均算法,实现了在未知波长下对PSF的估计,并且相比于传统算法提高了图像重建的成像质量。这些工作揭示了PSF与波长之间的关系,为优化散射环境中的成像质量和分析特征光谱信号提供了宝贵的思路。
Understanding the point spread function(PSF)in scattering media is crucial in various fields such as biomedical imaging,atmospheric science,and optical communication.This study delves into the characteristics of PSF and elucidates the relationship between PSF and different wavelengths in scattering media through theoretical derivation and experimental verification of the light field function.The correlation of PSF at different wavelengths is mainly controlled by the scaling factor and the equivalent phase mask.By analyzing and predicting the equivalent phase mask,this article proposes a weighted average algorithm that successfully estimates PSF under unknown wavelength conditions,thereby improving the quality of image reconstruction compared to traditional algorithms.This work reveals the relationship between PSF and wavelength,providing valuable insights into optimizing imaging quality in scattering environments and analysis of spectral signal characteristics.
作者
张润晨
张敷阳
杨涛
曾文进
沈骁
Zhang Runchen;Zhang Fuyang;Yang Tao;Zeng Wenjin;Shen Xiao(State Key Laboratory of Organic Electronics and Information Displays,Institute of Advanced Technology,Nanjing University of Posts and Telecommunications,Nanjing 210023,Jiangsu,China;Henan Institute of Flexible Electronics,Zhengzhou 450046,Henan,China;College of Electronic and Optical Engineering&College of Flexible Electronics(Future Technology),Nanjing University of Posts and Telecommunications,Nanjing 210023,Jiangsu,China)
出处
《激光与光电子学进展》
CSCD
北大核心
2024年第20期228-234,共7页
Laser & Optoelectronics Progress
基金
国家自然科学基金(62074082,21973047,62075099)。
关键词
散射
点扩散函数
光谱相关
反卷积成像
光谱记忆效应
scattering
point spread function
spectral correlation
deconvolution imaging
spectral memory effect
