摘要
为提高数字全息显微系统的重建效果,将凸集投影算法应用于数字全息中,以实现数字全息的超分辨重建.首先,在数字全息和凸集投影法的理论基础上,搭建透射式离轴数字全息显微实验光路.然后,利用分辨率板验证凸集投影法在全息图超分辨率复原中的有效性.最后,通过微透镜阵列验证该方法在三维重建中的可行性.将参考全息图的三维重建结果,分别与低分辨率全息图和超分辨率复原全息图的重建结果进行残差估计.结果表明,后者残差的峰谷值和均方根值相比前者分别降低了36.88%和70.66%,证明该方法能够实现数字全息的超分辨重建.
In order to improve the reconstruction effect of digital holographic microscopy system,the Project Onto Convex Set(POCS)algorithm is applied to digital holography to achieve super-resolution reconstruction of hologram.Firstly,based on the theory of digital holography and POCS algorithm,the optical path of transmissive off-axis digital holography is established.Then,the resolution board is used to verify the effectiveness of the POCS algorithm in hologram super-resolution restoration.Finally,the feasibility of the method in 3D reconstruction is verified by microlens array.The residual estimation results of the low-resolution hologram and the super-resolution restored hologram are respectively estimated by the three-dimensional reconstruction result of the reference hologram.The PV and RMS of the latter residuals are reduced by 36.88%and 70.66%,respectively,which proves that the method can achieve super-resolution reconstruction of digital holography.
作者
冯丹青
田爱玲
刘丙才
冯方
王大森
刘卫国
FENG Dan-qing;TIAN Ai-ling;LIU Bing-cai;FENG Fang;WANG Da-sen;LIU Wei-guo(Shaanxi Province Key Laboratory of Membrane Technology and Optical Test,School of Optoelectronic Engineering,Xi′an Technological University,Xi′an 710021,China;The Ningbo Branch of Ordnance Science Institute of China,Ningbo,Zhejiang 310022,China)
出处
《光子学报》
EI
CAS
CSCD
北大核心
2019年第10期87-93,共7页
Acta Photonica Sinica
基金
科技部国际合作项目(No.2015DFA10360)
陕西省教育厅项目(No.17JS048)~~
关键词
光学测量
数字全息
凸集投影
角谱法
超分辨技术
Optical testing
Digital holography
Project onto convex set
Angular spectrum
Super resolution algorithm
