Sign in to use this feature.

Years

Between: -

Subjects

remove_circle_outline
remove_circle_outline
remove_circle_outline
remove_circle_outline
remove_circle_outline

Journals

remove_circle_outline

Article Types

Countries / Regions

Search Results (3)

Search Parameters:
Keywords = rainbow hologram

Order results
Result details
Results per page
Select all
Export citation of selected articles as:
13 pages, 9197 KiB  
Review
Computer-Generated Holograms Application in Security Printing
by Evgenii Y. Zlokazov, Vasilii V. Kolyuchkin, Dmitrii S. Lushnikov and Andrei V. Smirnov
Appl. Sci. 2022, 12(7), 3289; https://doi.org/10.3390/app12073289 - 24 Mar 2022
Cited by 6 | Viewed by 3239
Abstract
In the present article the application of computer-generated holograms in security printing was considered. The main subject was creation of informative memory marks based on CGH for automatic read out of the information embedded in this marks that can be used for identification, [...] Read more.
In the present article the application of computer-generated holograms in security printing was considered. The main subject was creation of informative memory marks based on CGH for automatic read out of the information embedded in this marks that can be used for identification, copyrighting, or other types of authentication control of security elements. The fundamental theoretical basics of computer-generated holograms and its applications were given. The proposed technical solutions, such as “Printed hologram”, “Smart verification”, and “Holomemory”, were considered in detail. The announced solutions were presented in the schemes of interaction between manufacturers of security printing and its potential consumers—citizens and regulatory government agencies. Full article
(This article belongs to the Special Issue Holographic Technologies: Theory and Practice)
Show Figures

Figure 1

11 pages, 4982 KiB  
Article
Recording a Hologram Transmitted over a Communication Channel on One Sideband
by Sergey A. Shoydin, Sergey B. Odinokov, Artem L. Pazoev, Ivan K. Tsyganov and Ekaterina A. Drozdova
Appl. Sci. 2021, 11(23), 11468; https://doi.org/10.3390/app112311468 - 3 Dec 2021
Cited by 3 | Viewed by 2657
Abstract
The paper presents experimental results on the recording and restoration of 3D holographic frames suitable for transmitting 3D holographic images with the frame rate required for TV images and a resolution of the Full HD standard and higher. The Patent RF No. 2707582 [...] Read more.
The paper presents experimental results on the recording and restoration of 3D holographic frames suitable for transmitting 3D holographic images with the frame rate required for TV images and a resolution of the Full HD standard and higher. The Patent RF No. 2707582 proposed a method for compressing holographic information and transmitting it using a procedure similar to SSB over conventional communication channels. In this work, the holographic information of a 3D portrait of a person, transmitted and received via the Wi-Fi communication channel, was restored in the form of a rainbow hologram, as one of a variety of holograms, by the computer addition of the carrier spatial frequency, and then hologram was actually produced on a photoresist. This technology can be used to create a holographic phototelegraph or, if there is a dynamic holographic display, to create a holographic television and 3D augmented reality. Full article
(This article belongs to the Special Issue Holographic Technologies: Theory and Practice)
Show Figures

Figure 1

11 pages, 20320 KiB  
Article
High Resolution Computer-Generated Rainbow Hologram
by Takeshi Yamaguchi and Hiroshi Yoshikawa
Appl. Sci. 2018, 8(10), 1955; https://doi.org/10.3390/app8101955 - 17 Oct 2018
Cited by 13 | Viewed by 5169
Abstract
We have developed an output device for a computer-generated hologram (CGH) named a fringe printer, which can output a 0.35- μ m plane-type hologram. We also proposed several CGH with a fringe printer. A computer-generated rainbow hologram (CGRH), which can reconstruct a full [...] Read more.
We have developed an output device for a computer-generated hologram (CGH) named a fringe printer, which can output a 0.35- μ m plane-type hologram. We also proposed several CGH with a fringe printer. A computer-generated rainbow hologram (CGRH), which can reconstruct a full color 3D image, is one of our proposed CGH. The resolution of CGRH becomes huge (over 50 Gpixels) due to improvement of the fringe printer. In the calculation, it is difficult to calculate the whole fringe pattern of CGRH at the same time by a general PC. Furthermore, since the fine pixel pitch provides a wide viewing angle in CGRH, object data, which are used in fringe calculation, should be created from many viewpoints to provide a proper hidden surface removal process. The fringe pattern of CGRH is calculated in each horizontal block. Therefore, the object data from several view points should be organized for efficient computation. This paper describes the calculation algorithm for huge resolution CGRH and its output results. Full article
(This article belongs to the Special Issue Holography, 3D Imaging and 3D Display)
Show Figures

Figure 1

Back to TopTop