Academic literature on the topic 'Digital holography'

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Journal articles on the topic "Digital holography"

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Kang, Hoonjong, Dimana Nazarova, Branimir Ivanov, et al. "Digital Holographic Printing Methods for 3D Visualization of Cultural Heritage Artifacts." Digital Presentation and Preservation of Cultural and Scientific Heritage 4 (September 30, 2014): 69–78. http://dx.doi.org/10.55630/dipp.2014.4.8.

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Holography enables capture and reconstruction of the optical field scattered from three-dimensional (3D) objects. The hologram encodes both amplitude and phase of the field under coherent illumination, whereas photography records only the amplitude by incoherent light. 3D visualization feature of holography motivates expansion of research efforts dedicated to digital holographic imaging methods as a holographic display or a holographic printer. The paper presents two holographic 3D printing techniques which combine digital 3D representation of an object with analog holographic recording. Gener
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Picart, Pascal. "Recent advances in speckle decorrelation modeling and processing in digital holographic interferometry." Photonics Letters of Poland 13, no. 4 (2021): 73. http://dx.doi.org/10.4302/plp.v13i4.1126.

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Digital holography, and especially digital holographic interferometry, is a powerful approach for the characterization of modifications at the surface or in the volume of objects. Nevertheless, the reconstructed phase data from holographic interferometry is corrupted by the speckle noise. In this paper, we discuss on recent advances in speckle decorrelation noise removal. Two main topics are considered. The first one presents recent results in modelling the decorrelation noise in digital Fresnel holography. Especially the anisotropy of the decorrelation noise is established. The second topic p
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Balasubramani, Vinoth, Małgorzata Kujawińska, Cédric Allier, et al. "Roadmap on Digital Holography-Based Quantitative Phase Imaging." Journal of Imaging 7, no. 12 (2021): 252. http://dx.doi.org/10.3390/jimaging7120252.

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Quantitative Phase Imaging (QPI) provides unique means for the imaging of biological or technical microstructures, merging beneficial features identified with microscopy, interferometry, holography, and numerical computations. This roadmap article reviews several digital holography-based QPI approaches developed by prominent research groups. It also briefly discusses the present and future perspectives of 2D and 3D QPI research based on digital holographic microscopy, holographic tomography, and their applications.
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Zhang, Yu Fei, and Yi Quan Wu. "A Method for Eliminating Zero-Order Image in Digital Holograph Based on Contourlet Transform." Advanced Materials Research 760-762 (September 2013): 80–83. http://dx.doi.org/10.4028/www.scientific.net/amr.760-762.80.

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In the reconstruction process of digital holograph, zero-order image has a bad impact on the quality of real image. In this paper, a new way to eliminate zero-order image in digital holography is proposed. Firstly, digital holography image is decomposed by contourlet transform, then remove the low frequency. The new digital holography image is obtained by inverse contourlet transform. Experiments show that, compared with spatial filtering, frequency domain filtering, laplacian filtering and eliminate zero-order image method based on wavelet, the new method proposed in this paper can eliminate
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Iano, Randrianasoa, and Randriamaroson Mahandrisoa. "Enhancing Real-Time Pyramid Holographic Display Through Iterative Algorithm Optimization for 3D Image Reconstruction." American Journal of Optics and Photonics 12, no. 1 (2024): 9–17. http://dx.doi.org/10.11648/j.ajop.20241201.12.

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Holography, a crucial technology for 3D visualization, strives to create realistic relief images. This research aims to enhance hologram quality and viewer experience by optimizing the image-processing pipeline. Conventional holographic displays face challenges due to their bulkiness and limited viewing angles. To overcome these limitations, this study proposes a novel approach that integrates digital holography with holographic pyramid technology. Digital holography uses computer algorithms for hologram generation, while holographic pyramid technology projects images onto a reflective pyramid
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Chen, Duofang, Lin Wang, Xixin Luo, Hui Xie, and Xueli Chen. "Resolution and Contrast Enhancement for Lensless Digital Holographic Microscopy and Its Application in Biomedicine." Photonics 9, no. 5 (2022): 358. http://dx.doi.org/10.3390/photonics9050358.

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An important imaging technique in biomedicine, the conventional optical microscopy relies on relatively complicated and bulky lens and alignment mechanics. Based on the Gabor holography, the lensless digital holographic microscopy has the advantages of light weight and low cost. It has developed rapidly and received attention in many fields. However, the finite pixel size at the sensor plane limits the spatial resolution. In this study, we first review the principle of lensless digital holography, then go over some methods to improve image contrast and discuss the methods to enhance the image
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Wang, Yu Tian, Dong Sheng Wang, and Wei Wei Pan. "The Analysis and Research on Digital Holography Signal Based on Wavelet Theory." Advanced Materials Research 216 (March 2011): 414–18. http://dx.doi.org/10.4028/www.scientific.net/amr.216.414.

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When introduce the wavelet theory to filter the hologram and the reconstructed image in the digital holography, the noise of the reconstructed image is greatly reduced. In the off-axis digital holography, the zero-order wave is decreased dramatically when after a wavelet filter, at the same time, the speckle noise is also reduced, and it turns out that the resolution of the reconstruction image is improved greatly. The system launches the research thoroughly on the three-dimensional body digital holographic technology, from the theory to the application, from the simulation to the experiment,
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Takahashi, Yoshitaka, Masatoshi Saito, Toru Nakajima, and Masakazu Shingu. "Determination of Phase Shift by Digital Holography." Applied Mechanics and Materials 888 (February 2019): 43–46. http://dx.doi.org/10.4028/www.scientific.net/amm.888.43.

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In phase shifting interferometry phase shift is applied by various ways, but applying it with high accuracy, especially by LD current modulation, is not easy. In order to determine the accurate phase shift a new method has been proposed that the value of LD current corresponding to π/2 phase shift can be determined by phase shifting digital holography. The measured data of standard in surface shape measurement were used for calibration, and the obtained value was confirmed to cause noise reduction and improvement of holographic reconstructed images in digital holography.
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Zhang, Tong, Ichirou Yamaguchi, and Hywel Morgan. "Digital Holographic Microscopy." Microscopy and Microanalysis 5, S2 (1999): 362–63. http://dx.doi.org/10.1017/s1431927600015130.

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We applied phase-shifting digital holography to microscopy in this paper. At first lensless microscopy is proposed, in which no optical adjustment is necessary. Then, the method is applied to relax the limitation of focal depth in traditional optical microscopy. A theory for image formation and experimental verification using a few specimens are described.keywords: microscopy, digital holography, phase shiftingDue to the finite focal depth of an imaging lens, a limitation to normal optical microscopy-is that, only the 2-dimensional (2-D) information of an object can be obtained at one time. Be
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Zhao, Jieming, Zhan Gao, Shengjia Wang, Yuhao Niu, Lin Deng, and Ye Sa. "Multi-Object Deep-Field Digital Holographic Imaging Based on Inverse Cross-Correlation." Applied Sciences 13, no. 20 (2023): 11430. http://dx.doi.org/10.3390/app132011430.

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To address the complexity of small or unique reconstruction distances in digital holography, we propose an inverse cross-correlation-based algorithm for the digital holographic imaging of multiplanar objects with a large depth of field. In this method, a planar output mapping is closely around the objects, and it is established by calculating the image inverse cross-correlation matrix of the reconstructed image at similar reconstruction distances, whereby the object edges serve as the result guide. Combining the search for edge planes with the depth estimation operator, the depth of field of d
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Dissertations / Theses on the topic "Digital holography"

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Williams, Logan Andrew. "Digital Holography for Three Dimensional Tomographic and Topographic Measurements." University of Dayton / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1398436841.

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Hjartarson, Örn. "Separation of lobes in Multispectral Digital Holography." Thesis, Umeå universitet, Institutionen för fysik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-64314.

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Through a holographic recording a property from the third dimension, the depth, is obtained in the form of a phase map of the incident light. One wavelength holography will have a unique phase for the depth range corresponding to the wavelength of the light and outside this range the real depth can not be resolved. By introducing more wavelengths to the measurement the unique phase combination of the waves will have a wider range and larger objects can be resolved. Up to six wavelengths can be simultaneous recorded by making them occupy different spatial frequencies. A set of spatial frequenci
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Tapsell, John Peter. "Direct-Write Digital Holography." Thesis, University of Sussex, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.487902.

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Chapter 1 gives a brief history of the field of holography along with an overview of this thesis. A more detailed description of holography is provided in Chapter 2 along with a discussion of digital holography. Chapter 3 examines the design of a one-step monochromatic hologram printer capable producing white-light viewable transmission holograms created with the aid of an LCOS display system and printed in a dot-matrix sequence. The lens system employed includes a microlens array and an afocal relay telescope which are both quantitatively examined in order to maximise the contrast, diffractio
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Lopez, Marcio André Prieto Aparicio. "Microscopia holográfica digital aplicada na análise de tecidos biológicos." Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/43/43134/tde-23032013-124944/.

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Este trabalho teve como objetivo a aplicação do Microscópio Holográfico Digital para análise de amostras biológicas, por meio de imagens de parâmetros físicos e informação quantitativa de uma amostra, gerados através de hologramas digitais, o que não ocorre na holografia clássica. O processamento e análise dos hologramas digitais foi efetuada por um programa escrito por meio do software MatLab, empregando o método de Dupla Propagação. São explicados outros métodos para tratamento de hologramas digitais, presentes no programa. O método de Dupla Propagação foi discutido, destacando suas vantagen
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Li, Yan. "Digital holography and optical contouring." Thesis, Liverpool John Moores University, 2009. http://researchonline.ljmu.ac.uk/4539/.

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Digital holography is a technique for the recording of holograms via CCD/CMOS devices and enables their subsequent numerical reconstruction within computers, thus avoiding the photographic processes that are used in optical holography. This thesis investigates the various techniques which have been developed for digital holography. It develops and successfully demonstrates a number of refinements and additions in order to enhance the performance of the method and extend its applicability. The thesis contributes to both the experimental and numerical analysis aspects of digital holography. Rega
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Mann, Christopher J. "Quantiative biological micrsocopy by digital holography." [Tampa, Fla] : University of South Florida, 2006. http://purl.fcla.edu/usf/dc/et/SFE0001709.

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Mann, Christopher J. "Quantiative biological microsocopy by digital holography." Scholar Commons, 2006. http://scholarcommons.usf.edu/etd/2614.

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In this dissertation, improved techniques in digital holography, that have produced high-resolution, high-fidelity images, are discussed. In particular, the angular spectrum method of calculating holographic optical field is noted to have several advantages over the more commonly used Fresnel transformation or Huygens convolution method. It is observed that spurious noise and interference components can be tightly controlled through the analysis and filtering of the angular spectrum. In the angular spectrum method, the reconstruction distance does not have a lower limit, and the off-axis angle
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Dong, Hongpai. "Applications and developments of digital holography." Thesis, University of Aberdeen, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.430382.

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Digital holography is a new technology emerged in 1994. Because of developments of Laser, personal computer, and CCD sensor, digital holography is finding a remarkably wide range for applications. The reconstruction algorithm is the corner stone of digital holography. It simulates and models the optical reconstruction process with numerical algorithms. A number of reconstruction algorithms have been developed for digital holography in recent years, for instance, the digital implementations of the Fresnel transform, the Fraunhofer transform, and Wavelet transform. We examined all above reconstr
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Khodadad, Davood. "Multiplexed Digital Holography incorporating Speckle Correlation." Doctoral thesis, Luleå University of Technology, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-55810.

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In manufacturing industry there is a high demand for on line quality control to minimize therisk of incorrectly produced objects. Conventional contact measurement methods are usuallyslow and invasive, meaning that they cannot be used for soft materials and for complexshapes without influencing the controlled parts. In contrast, interferometry and digitalholography in combination with computers become faster, more reliable and highly accurateas an alternative non-contact technique for industrial shape evaluation. For example in digitalholography, access to the complex wave field and the possibi
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Suck, Sarah Yasmine. "Digital heterodyne holography for plasmonic nanostructures." Paris 6, 2011. http://www.theses.fr/2011PA066681.

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Dans cette thèse, nous étudions les caractéristiques de diffusion de nanostructures plasmoniques tout en adaptant et améliorant l'holographie hétérodyne numérique, qui est une technique d'imagerie plein champ pour mesurer en trois dimensions le diagramme de rayonnement. En outre, nous avons effectué de nombreuses mesures spectroscopiques pour enregistrer les spectres de diffusion de nanoobjets uniques. Afin d'obtenir une compréhension plus profonde des caractéristiques du champ diffusé que nous mesurons, nous avons développé un modèle numérique basé sur la méthode des éléments finis. Ce modèle
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Books on the topic "Digital holography"

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Li, Jun-chang, and Pascal Picart, eds. Digital Holography. John Wiley & Sons, Inc., 2012. http://dx.doi.org/10.1002/9781118562567.

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1945-, Li Junchang, ed. Digital holography. ISTE, 2012.

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Yaroslavsky, Leonid. Digital Holography and Digital Image Processing. Springer US, 2004. http://dx.doi.org/10.1007/978-1-4757-4988-5.

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Steinchen, Wolfgang. Digital shearography: Theory and application of digital Speckle pattern shearing interferometry. SPIE Press, 2003.

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Picart, Pascal, ed. New Techniques in Digital Holography. John Wiley & Sons, Inc., 2015. http://dx.doi.org/10.1002/9781119091745.

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Schnars, Ulf, Claas Falldorf, John Watson, and Werner Jüptner. Digital Holography and Wavefront Sensing. Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-662-44693-5.

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Poon, Ting-Chung, ed. Digital Holography and Three-Dimensional Display. Springer US, 2006. http://dx.doi.org/10.1007/0-387-31397-4.

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author, Aylo Rola 1981, and Williams, Logan A., 1977- author, eds. Analog and digital holography with MATLAB. SPIE Press, 2015.

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Asundi, Anand. Digital holography for MEMS and microsystem metrology. Wiley, 2011.

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Asundi, Anand, ed. Digital Holography for MEMS and Microsystem Metrology. John Wiley & Sons, Ltd, 2011. http://dx.doi.org/10.1002/9781119997290.

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Book chapters on the topic "Digital holography"

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Kostuk, Raymond K. "Digital Holography." In Holography, 2nd ed. Taylor & Francis, 2024. http://dx.doi.org/10.1201/9781032625423-7.

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Kostuk, Raymond K. "Digital Holography." In Holography. CRC Press, 2019. http://dx.doi.org/10.1201/9780429185830-7.

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Narayanamurthy, C. S. "Digital holography." In Contemporary Holography. CRC Press, 2022. http://dx.doi.org/10.1201/9780367470975-5.

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Toal, Vincent. "Digital Holography." In Introduction to Holography, 2nd ed. CRC Press, 2022. http://dx.doi.org/10.1201/9781003155416-17.

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Shimobaba, Tomoyoshi, and Tomoyoshi Ito. "Digital holography." In Computer Holography. CRC Press, 2019. http://dx.doi.org/10.1201/9780429428005-4.

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Khare, Kedar, Mansi Butola, and Sunaina Rajora. "Digital Holography." In Fourier Optics and Computational Imaging. Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-18353-9_14.

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Schnars, Ulf, Claas Falldorf, John Watson, and Werner Jüptner. "Digital Holography." In Digital Holography and Wavefront Sensing. Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-662-44693-5_3.

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Khare, Kedar. "Digital Holography." In Fourier Optics and Computational Imaging. John Wiley & Sons, Ltd, 2015. http://dx.doi.org/10.1002/9781118900352.ch16.

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Zhang, Jinghao, Yuxiao Wang, and Zhengjun Liu. "Digital Holography." In Advances in Optics and Optoelectronics. Springer Nature Singapore, 2025. https://doi.org/10.1007/978-981-96-1929-0_5.

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Li, Jun-chang, and Pascal Picart. "Mathematical Prerequisites." In Digital Holography. John Wiley & Sons, Inc., 2013. http://dx.doi.org/10.1002/9781118562567.ch1.

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Conference papers on the topic "Digital holography"

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Kim, Youngrok, Dong-Woo Seo, Chihyun In, and Sung-Wook Min. "Super-resolution Self-interference Incoherent Digital Holography using Sparse Synthetic Aperture." In Digital Holography and Three-Dimensional Imaging. Optica Publishing Group, 2024. http://dx.doi.org/10.1364/dh.2024.w2b.4.

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We proposed the resolution enhancement of self-interference incoherent digital holography using sparse acquisition. Stochastic gradient descent-based optimization is exploited to find and refine the absent holographic signals.
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Ferraro, Vincenzo, Zhe Wang, Sara Coppola, Ernesto Di Maio, and Pier Luca Maffettone. "Rapid and Quantitative Formation of a Free-standing Liquid Film based on Digital Holographic Monitoring." In Digital Holography and Three-Dimensional Imaging. Optica Publishing Group, 2024. http://dx.doi.org/10.1364/dh.2024.m4b.4.

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The inherent properties of digital holography allow to preform real-time quantitative thickness mapping of thin liquid films. A rapid thin film formation strategy based on stretching the liquid film and holographic monitoring is proposed.
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Ipus, Erick, Lluis Martínez-León, Jesús Lancis, and Enrique Tajahuerce. "Parallel phase-shifting digital holography with a DMD using the fractional Talbot effect." In Digital Holography and Three-Dimensional Imaging. Optica Publishing Group, 2024. http://dx.doi.org/10.1364/dh.2024.w5a.4.

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We propose a parallel phase-shifting digital holography method using the fractional Talbot effect generated by periodic patterns encoded in a DMD. The method improves the efficiency of other phase-shifting holographic techniques based on DMDs.
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Wu, Jiachen, Fangyu Liu, Hongyuan Wang, and Liangcai Cao. "Model-driven neural network for compressive holographic reconstruction." In Digital Holography and Three-Dimensional Imaging. Optica Publishing Group, 2024. http://dx.doi.org/10.1364/dh.2024.m2a.5.

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Compressive holography enables multilayer reconstruction by single in-line hologram without twin image and crosstalk. However, the iterative reconstruction methods cannot meet the needs of rapid imaging. We proposed a model-driven neural network for compressive holographic reconstruction by combining the interpretability of iterative algorithm and fast inference of deep neural network. The experiment demonstrates the compelling reconstruction with fast computational speed.
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Metzner, Dominik, and Lukas T. Hiller. "Comparison of Monge-Ampère equation and Poisson’s equation for holographic lighting." In Digital Holography and Three-Dimensional Imaging. Optica Publishing Group, 2024. http://dx.doi.org/10.1364/dh.2024.w5b.3.

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Innovative lighting is an important part in lighting industry to improve safeness and visibility for example in road traffic. Developing lighting systems over the last decades, lighting systems were designed using halogen lamps to LED systems in the present. Modern lighting systems make use of holography. However, in many cases the light source is a fully coherent Laser beam that give us a precise reconstruction of the desired light distribution. In cases where the light source is a non-coherent LED, the accuracy reduces if we consider a holographic phase image created with the Gerchberg-Saxto
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Amann, Stephan, Edoardo Vicentini, Bingxin Xu, et al. "Microcomb-Based Digital Holography." In CLEO: Science and Innovations. Optica Publishing Group, 2024. http://dx.doi.org/10.1364/cleo_si.2024.sf2f.4.

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Lensless three-dimensional hyperspectral imaging is performed with a Kerr comb of 100 GHz line spacing. Broad microcombs will enable an unprecedented combination of long axial range, high precision and fast acquisition rate.
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Ferraro, Pietro, Zhe Wang, Vittorio Bianco, and Pier Luca Maffettone. "Spatiotemporal digital holography microscopy fringes addresses new challenges in biological microfluidic imaging." In 3D Image Acquisition and Display: Technology, Perception and Applications. Optica Publishing Group, 2024. http://dx.doi.org/10.1364/3d.2024.jm4a.13.

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Space-Time Digital Holography (STDH) enables high-resolution biological imaging by reassembling holographic interference fringes. For imaging the flowing cells within microfluidic channel, STDH breaks through depth of focus limits and smartly adapts to microfluidic speed.
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Johnson, K. M., B. Cormack, A. Strasser, K. Dixon, and J. Carsten. "The Digital Holographic Sundial." In Holography. Optica Publishing Group, 1986. http://dx.doi.org/10.1364/holography.1986.wb2.

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The oldest optical instrument is the gnomen1; a shadow casting rod used by the ancient Greeks to keep time. Depending on the position of the sun in the sky, the shadow has a unique length which is marked out on a horizontal surface. A sundial consists of a gnomen and graduated markings on a horizontal plane.
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Brown, Kevin G. "Digital holography." In LkForest 91, edited by Tung H. Jeong. SPIE, 1992. http://dx.doi.org/10.1117/12.57777.

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Lohmann, Adolf W. "Digital holography." In OSA Annual Meeting. Optica Publishing Group, 1988. http://dx.doi.org/10.1364/oam.1988.wu1.

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Ordinary holograms are made by interference experiments, digital holograms by computer and plotter. The object does not have to exist physically. Most advantages of digital holograms derive from that fact. Fundamentals and some applications are reviewed: AO display; image processing; and testing.
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Reports on the topic "Digital holography"

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Powell, Rodney M. Digital Holography. Defense Technical Information Center, 2000. http://dx.doi.org/10.21236/ada383043.

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Bingham, P. R., and K. W. Tobin. Direct to Digital Holography. Office of Scientific and Technical Information (OSTI), 2007. http://dx.doi.org/10.2172/932949.

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Bingham, P. R., and K. W. Tobin. Direct to Digital Holography. Office of Scientific and Technical Information (OSTI), 2002. http://dx.doi.org/10.2172/940249.

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Bingham, P. R., and K. W. Tobin. Direct to Digital Holography. Office of Scientific and Technical Information (OSTI), 2003. http://dx.doi.org/10.2172/940257.

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Bambha, Neal K., Justin R. Bickford, Jr Klett, and Karl K. Two-dimensional Phase Unwrapping for Digital Holography. Defense Technical Information Center, 2012. http://dx.doi.org/10.21236/ada570152.

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Neifeld, Mark. Application of Compressive Sensing to Digital Holography. Defense Technical Information Center, 2015. http://dx.doi.org/10.21236/ada616059.

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Klett, Jr, Bambha Karl K., Bickford Neal, and Justin. Holography at the U.S. Army Research Laboratory: Creating a Digital Hologram. Defense Technical Information Center, 2012. http://dx.doi.org/10.21236/ada574840.

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Guildenbecher, Daniel Robert. Developments in digital in-line holography enable validated measurement of 3D particle field dynamics. Office of Scientific and Technical Information (OSTI), 2013. http://dx.doi.org/10.2172/1121933.

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Marron, Joseph C. Photon Noise in Digital Holographic Detection. Defense Technical Information Center, 2008. http://dx.doi.org/10.21236/ada496179.

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Lynch, James F. A digital Higgs universe and the flow of time. Woods Hole Oceanographic Institution, 2024. http://dx.doi.org/10.1575/1912/70830.

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Theoretically considering velocities greater than c implies considering an observer’s past and extends the overall analysis into the complex plane. By using a series of rotations by i in the complex plane at the Planck scale, one can create a four-lobed structure of “instants of time,” which together with considering matter and antimatter in the lobes and the +/- sense of the rotation, leads to a Higgs field representation of spacetime. A metric is developed for this system as well as a generalized spacetime interval. It is shown that the Friedmann Equations are consistent with our “Higgs Cosm
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