基于数字全息的模糊图像复原技术研究  

Research on Fuzzy Image Restoration Technology Based on Digital Holography

作　　者：李郁峰[1] 田二明[1] 李琴[3] 李晓 LI Yu-feng;TIAN Er-ming;LI Qin;LI Xiao(Institute for Civ-Mil Integration&Collaborative Innovation,North University of China,Taiyuan Shanxi 030051,China;School of Electrical and Control Engineering,North University of China,Taiyuan Shanxi 030051,China;North Automatic Control Technology Institute,Foreign Trade R&D Department,Taiyuan Shanxi 030006,China)

机构地区：[1]中北大学军民融合协同创新研究院,山西太原030051 [2]中北大学电气与控制工程学院,山西太原030051 [3]北方自动控制技术研究所军贸工程部,山西太原030006

出　　处：《计算机仿真》2024年第4期205-209,共5页Computer Simulation

基　　金：山西省应用基础研究计划项目(201901D111144)。

摘　　要：采用数字全息方法研究物体经散射介质(毛玻璃)成像复原机理。首先,在菲涅尔离轴数字全息原理的基础上,建立了数字全息记录与再现的数学模型。然后,设计和搭建了全息散射成像系统,建立了毛玻璃的数学模型,并提出一种消除毛玻璃散斑噪声的算法,利用菲涅耳再现算法对实验得到的数字全息图进行再现。最后,用频谱滤波法对全息图再处理后进行再现。实验结果验证了理论算法和实验方法的正确性,为今后物体经过复杂介质的图像复原的深入研究提供了帮助。In this paper,the image restoration mechanism of objects through scattering medium(ground glass)is studied by digital holography.Firstly,the mathematical model of digital holography for its recording and reconstruction was established based on the principle of Fresnel off-axis digital holography.Then,the holographic scattering imaging system was designed and built,the mathematical model of ground glass was established,and an algorithm to eliminate the speckle noise of ground glass was proposed.The digital hologram obtained from the experiment was reconstructed by the Fresnel reconstruction algorithm.Finally,the hologram was reconstructed after reprocessing by the spectral filtering method.The experimental results verify the correctness of the theoretical algorithm and the experimental method,and provide help for the in-depth study of image restoration of objects passing through complex media in the future.

关 键 词：数字全息 散射成像 毛玻璃 数字再现 

分 类 号：O438.1[机械工程—光学工程] TP317.4[理学—光学]