Results 21 to 30 of about 16,987 (218)
Generation of Hybrid Optical Trap Array by Holographic Optical Tweezers
Frontiers in Physics, 2021 Enabled by multiple optical traps, holographic optical tweezers can manipulate multiple particles in parallel flexibly. Spatial light modulators are widely used in holographic optical tweezers, in which Gaussian point (GP) trap arrays or special mode ...
Xing Li +12 more
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Practical Method to Screen Contaminated Holograms of Flocs Using Light Intensity
Frontiers in Marine Science, 2021 Submergible digital holographic camera can measure the in situ size and shape of suspended particles, such as complex flocs and biological organisms, without disturbance.
Sun Min Choi +4 more
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Digital Fresnel Hologram Watermarking [PDF]
, 2010 We present a method of digital hologram watermarking using a Fresnel hologram of a real-world 3D object and the fractional Fourier transform. A watermark is encrypted using double random phase fractional Fourier domain encoding technique and then encoded
Tomi Pitkaaho +5 more
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Generation of Binary Off-axis Digital Fresnel Hologram with Enhanced Quality
ICT Express, 2015 The emergence of high resolution printer and digital micromirror device (DMD) has enabled real, off-axis holograms to be printed, or projected onto a screen.
Peter Wai Ming Tsang
doaj +1 more source
A digital hologram-based encryption and compression method for 3D models
Frontiers in Physics, 2022 This study proposes a novel method to compress and decompress the 3D models for safe transmission and storage. The 3D models are first extracted to become 3D point clouds, which would be classified by the K-means algorithm.
Yukai Sun +7 more
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Double resolution microwave holography [PDF]
, 1976 Includes bibliographical references.This thesis endeavours to record the development and subsequent evaluation of a simple technique for the recording of microwave holograms using common hardware components, which offers the possibility of significant ...
Nilsen, Christopher Shakespeare
core +1 more source
Applied Sciences, 2018 Optical scanning holography (OSH) is a powerful and effective method for capturing the complex hologram of a three-dimensional (3-D) scene. Such captured complex hologram is called optical scanned hologram. However, reconstructing a focused image from an
Peter Wai Ming Tsang +2 more
doaj +1 more source
Lossless Compression Using the Ramanujan Sums: Application to Hologram Compression
IEEE Access, 2020 The Ramanujan sum, introduced by S. Ramanujan, has been utilized-among other applications-for signal processing. It has recently been suggested that transforms using the Ramanujan sums may also provide the benefit of data compression. This study presents
Harutaka Shiomi +3 more
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Reconfigurable Light Field Generation With Hologram-Enhanced Multicore Fibers. [PDF]
NanophotonicsA novel metafiber platform enables reconfigurable generation of structured light patterns directly at the end of a multicore optical fiber. A 3D‐printed hologram maps individual fiber cores onto predefined image elements, allowing programmable pattern synthesis through selective core excitation.
Khosravi M +10 more
europepmc +2 more sources
Volume hologram replication system for photovoltaic applications
, 2018 A replication system and method for fabricating volume hologram arrays is reviewed in this paper. The replication system can be used to fabricate high-efficiency transmission volume holographic lens arrays that are well-suited for spectrum-splitting ...
Kostuk, Raymond K. +6 more
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