Results 41 to 50 of about 1,217,682 (246)
Deep DIH: Single-Shot Digital In-Line Holography Reconstruction by Deep Learning
IEEE Access, 2020 Digital in-line holography (DIH) is broadly used to reconstruct 3D shapes of microscopic objects from their 2D holograms. One of the technical challenges in the reconstruction stage is eliminating the twin image originating from the phase-conjugate ...
Huayu Li +4 more
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Hologram conversion for speckle free reconstruction using light field extraction and deep learning.
Optics Express, 2020 A novel hologram conversion technique for speckle-less reconstruction is proposed. Many speckle-less reconstruction methods require holograms specially created for those techniques, limiting their applications to general pre-existing holograms.
Dae‐youl Park, Jae-Hyeung Park
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Noise minimised high resolution digital holographic microscopy applied to surface topography [PDF]
Компьютерная оптика, 2018 The topography of surface relief gratings was studied by digital holographic microscopy. The applicability of the method for quantitative measurements of surface microstructure at nanoscale was demonstrated.
Elena Achimova +5 more
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Sensors, 2021 This paper proposes a method to embed and extract a watermark on a digital hologram using a deep neural network. The entire algorithm for watermarking digital holograms consists of three sub-networks.
Ji-Won Kang +6 more
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MODELLING AND RECONSTRUCTION OF GABOR-TYPE HOLOGRAMS
Dyna, 2011 Los procesos de modelación y reconstrucción de hologramas se soportan en el cálculo de la integral de difracción en su formulación de kirchhoff-fresnel o rayleight-sommerfeld. Dicha integral puede ser evaluada numéricamente por medio de diferentes formalismos: teorema de convolución, espectro angular y transformada de fresnel, entre otras.
J. LORA, GABRIEL +2 more
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Magnetic Holography and Its Application to Data Storage
Photonics, 2021 The principle of magnetic holograms and its application to holographic memory are reviewed. A magnetic hologram was recorded through a thermomagnetic recording as a difference in magnetization direction and reconstructed with the magneto-optical effect ...
Yuichi Nakamura
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Off-axis digital hologram reconstruction: some practical considerations. [PDF]
Applied Optics, 2011 Holographic rendering of off-axis intensity digital holograms is discussed. A review of some of the main numerical processing methods, based either on the Fourier transform interpretation of the propagation integral or on its linear system counterpart ...
N. Verrier, M. Atlan
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Sound wave hologram and optical reconstruction
Proceedings of the IEEE, 1967 An acoustic hologram is constructed using a sound wave (20 kHz), scanning the acoustic fields by a microphone, and lighting a lamp by amplified electrical signals from the microphone. The original image is reconstructed to illuminate the sound wave hologram of reduced size by the laser light (6328 A) and observed by a microscope.
AOKI, Yoshinao +3 more
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Dual wavelength digital holography for 3D particle image velocimetry [PDF]
Journal of the European Optical Society-Rapid Publications, 2015 A multi-exposure digital in-line hologram of a moving particle field is recorded by two different wavelengths and at different times. As a result, during the reconstruction step, each hologram can be independently and accurately reconstructed for each ...
Grare S. +5 more
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OpticsPhase holography is a critical optical imaging and information processing technique with applications ranging from microscopy to optical communications.
Luz Hernández-Felipe +3 more
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