Autofocusing in digital holography using eigenvalues

Ghosh Anik; Kulkarni Rishikesh; Mondal Pranab Kumar

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Autofocusing in digital holography using eigenvalues

机译：使用特征值在数字全息内容中自动聚焦

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A new autofocusing algorithm for digital holography is proposed based on the eigenvalues of the images reconstructed at different distances in the measurement volume. An image quality metric evaluated based on the distribution of its eigenvalues is compared in function of the reconstruction distance to identify the location of the focal plane. The proposed automatic focal plane detection algorithm is capable of working with amplitude objects, phase objects, and mixed type objects. A performance comparison of the proposed algorithm with some previously reported representative algorithms is provided. The simulation and experimental results demonstrate the practical applicability of the proposed algorithm. (C) 2021 Optical Society of America

机译：提出了一种新的数字全息自聚焦算法，该算法基于在测量体中不同距离处再现的图像的特征值。基于特征值分布评估的图像质量指标与重建距离的函数进行比较，以确定焦平面的位置。提出的自动焦平面检测算法能够处理振幅对象、相位对象和混合类型对象。文中给出了该算法与一些已有代表性算法的性能比较。仿真和实验结果证明了该算法的实用性。（2021）美国光学学会

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《Applied optics》 |2021年第4期|共10页
作者
Ghosh Anik; Kulkarni Rishikesh; Mondal Pranab Kumar;
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作者单位

Indian Inst Technol Guwahati Dept Elect &

Elect Engn Gauhati Assam India;

Indian Inst Technol Guwahati Dept Elect &

Elect Engn Gauhati Assam India;

Indian Inst Technol Guwahati Dept Mech Engn Gauhati Assam India;

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1. Holography and speckle in phase-shifting digital holography（Invited Paper） [J] . Ichirou Yamaguchi 中国光学快报：英文版 . 2009,第012期
2. Impact of the spatial coherence on self-interference digital holography [J] . Xingbing Chao, Yuan Gao, Jianping Ding, 中国物理：英文版 . 2021,第008期
3. Possibility to break through limitation of measurement range in dual-wavelength digital holography [J] . Tuo Li, Wen-Xiu Lei, Xin-Kai Sun, 中国物理：英文版 . 2021,第009期
4. Autofocusing in dual-wavelength digital holography using correlation coefficient [J] . Zhi Zhong, Xiaoxin Xie, Lei Liu, Optical engineering . 2019,第4期

机译：使用相关系数的双波长数字全息自动聚焦
5. An FPGA-Based Autofocusing Hardware Architecture for Digital Holography [J] . Chen Huan-Yuan, Hwang Wen-Jyi, Cheng Chau-Jern, Computational Imaging, IEEE Transactions on . 2019,第2期

机译：基于FPGA的数字全息自动对焦硬件架构
6. Autofocusing in dual-wavelength digital holography using correlation coefficient [J] . Zhi Zhong, Xiaoxin Xie, Lei Liu, Optical engineering . 2019,第4期

机译：使用相关系数的双波长数字全息术自动聚焦
7. Autofocusing in digital holography using deep learning [C] . Zhenbo Ren, Zhimin Xu, Edmund Y. Lam Conference on three-dimensional and multidimensional microscopy: image acquisition and processing . 2018

机译：使用深度学习进行数字全息自动对焦
8. Development of pulsed digital holography and digital shearography for measurement of dynamic deformation. [D] . Wen, Xinyu. 2007

机译：脉冲数字全息和数字剪切成像技术的发展，用于测量动态变形。
9. Opposite-view digital holographic microscopy with autofocusing capability [O] . Juanjuan Zheng, Peng Gao, Xiaopeng Shao -1

机译：具有自动聚焦功能的对面数字全息显微镜
10. Response to “Effect of the fill factor of CCD pixels on digital holograms: comment on the papers ‘Frequency analysis of digital holography’ and ‘Frequency analysis of digital holography with reconstruction by convolution’ ” [O] . Thomas M. Kreis 2003

机译：响应“CCD像素填充因子对数字全息图的影响：评论数字全息术的纸张”频率分析“与卷积重建数字全息术频率分析”
11. Application of Compressive Sensing to Digital Holography. [R] . Neifeld, M. 2015

机译：压缩感知在数字全息中的应用。

Autofocusing in digital holography using eigenvalues

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