Results 21 to 30 of about 895 (170)
Speckle regularization and miniaturization of computer-generated holographic stereograms
Optics Express, 2016 Holographic stereograms produce multiple parallax images that are seen from multiple viewpoints. Because random phase distributions are added to the parallax images to remove areas where images cannot be seen in the viewing area, speckles are generated in the reconstructed images.
Yasuhiro Takaki, Kengo Taira
openaire +4 more sources
Numerical reconstruction of a full parallax holographic stereogram with radial distortion
Optics Express, 2014 Successful commercialization of holographic printers based on holographic stereograms requires a tool for their numerical replaying and quality assessment before the time-consuming and expensive process of holographic recording. A holographic stereogram encodes 2D images of a 3D scene that are incoherently captured from multiple perspectives and ...
Hoonjong Kang +8 more
openaire +4 more sources
Generating Multi-Depth 3D Holograms Using a Fully Convolutional Neural Network. [PDF]
Adv Sci (Weinh)This work introduces the forward–backward‐diffraction framework for computing multi‐depth diffraction fields and the layer‐by‐layer replacement method for handling occlusion relationships. When combined with a fully convolutional neural network, it generates multi‐depth holograms with excellent depth focusing and corrects occlusion relationships.
Yan X +9 more
europepmc +2 more sources
Applied Sciences, 2023 For 60 years, high-energy pulsed lasers have enabled the recording of extremely realistic portraits of living people within a few nanoseconds. In the 21st century, this confidential technique, which requires great skill and equipment, has almost ...
Philippe Gentet +3 more
doaj +1 more source
Automotive Holographic Head‐Up Displays
Advanced Materials, Volume 34, Issue 19, May 12, 2022., 2022 Automotive head‐up displays (HUDs) projected on the windshield provide the driver with visual navigation and vehicle data within the comfort of the driver's personal eye box through a customizable extended display space. This article presents a review of technological advances and future perspectives in holographic HUDs by analyzing the optoelectronics
Jana Skirnewskaja, Timothy D. Wilkinson
wiley +1 more source
Near‐Field Measurements of Water‐Entry Sound of Low‐Speed Metal Balls in a Non‐Anechoic Tank
Mathematical Problems in Engineering, Volume 2021, Issue 1, 2021., 2021 As one of the target characteristics, water‐entry sound characteristics are of great significance to study, and its research has certain reference value for the detection of sea target. The water‐entry sound of an underwater target is a transient sound signal, and it is mainly measured in open water such as the sea and lakes.
Qi Li +5 more
wiley +1 more source
Holostereosynthesis: An Improvement to Louis Lumière’s Photostereosynthesis Technique
Applied Sciences, 2022 In 1920, Louis Lumière, one of the fathers of Cinématograph, invented photostereosynthesis, a photography technique that could recreate three-dimensional images without a specific artifice.
Philippe Gentet +2 more
doaj +1 more source
Fast 3D Content Update for Wide-Angle Holographic Near-Eye Display
Applied Sciences, 2021 Near-eye holographic displays are the holy grail of wear-on 3D display devices because they are intended to project realistic wide-angle virtual scenes with parameters matching human vision.
Rafał Kukołowicz +4 more
doaj +1 more source
, 2022 Holography is a promising avenue for high-quality displays without requiring bulky, complex optical systems. While recent work has demonstrated accurate hologram generation of 2D scenes, high-quality holographic projections of 3D scenes has been out of ...
Chakravarthula, Praneeth +3 more
core +2 more sources
Graphics processing unit accelerated computation of digital holograms [PDF]
, 2009 Cataloged from PDF version of article.An approximation for fast digital hologram generation is implemented on a central processing unit (CPU), a graphics processing unit (GPU), and a multi-GPU computational platform.
Kang, H., Onural, L., Yaras, F.
core +1 more source