The First 20 Years of Holographic Video–and the Next 20

Handbook of Visual Display Technology, 2012

This chapter reviews the first 20 years of interactive electro-holographic displays and holographic video -from first instance in 1990 through recent innovations in computational approaches and photonic modulation schemes. The enormous computational and photonic challenges required to interactively generate three-dimensional (3D) holographic images are examined, along with descriptions of techniques used to overcome the limitations on holographic computation and high-bandwidth photonic modulation. Included are the techniques of bipolar fringe computation, diffraction-specific fringe computation, and utilization of computer graphics hardware, as well as the scanned acousto-optic modulation technique (used in early display systems) and the liquid-crystal modulation technologies used in recent holographic displays.

Arxiv preprint arXiv:1006.0846, 2010

This research papers examines the new technology of Holographic Projections. It highlights the importance and need of this technology and how it represents the new wave in the future of technology and communications, the different application of the technology, the fields of life it will dramatically affect including business, education, telecommunication and healthcare. The paper also discusses the future of holographic technology and how it will prevail in the coming years highlighting how it will also affect and reshape many other fields of life, technologies and businesses.

Applied optics, 2018

Displays capable of true holographic video have been prohibitively expensive and difficult to build. With this paper, we present a suite of modularized hardware components and software tools needed to build a HoloMonitor with basic "hacker-space" equipment, highlighting improvements that have enabled the total materials cost to fall to $820, well below that of other holographic displays. It is our hope that the current level of simplicity, development, design flexibility, and documentation will enable the lay engineer, programmer, and scientist to relatively easily replicate, modify, and build upon our designs, bringing true holographic video to the masses.

Photon Management II, 2006

A European consortium has been working since September 2004 on all video-based technical aspects of threedimensional television. The group has structured its technical activities under five technical committees focusing on capturing 3D live scenes, converting the captured scenes to an abstract 3D representations, transmitting the 3D visual information, displaying the 3D video, and processing of signals for the conversion of the abstract 3D video to signals needed to drive the display. The display of 3D video signals by holographic means is highly desirable. Synthesis of high-resolution computer generated holograms with high spatial frequency content, using fast algorithms, is crucial. Fresnel approximation with its fast implementations, fast superposition of zonelens terms, look-up tables using pre-computed holoprimitives are reported in the literature. Phase-retrieval methods are also under investigation. Successful solutions to this problem will benefit from proper utilization and adaptation of signal processing tools like waveletes, fresnelets, chirplets, and atomic decompositions and various optimization algorithms like matching pursuit or simulated annealing.

Proceedings SIBGRAPI'98. International Symposium on Computer Graphics, Image Processing, and Vision (Cat. No.98EX237), 1998

This work reports developments on a system for 3D visualization based on "Holoprojection", a depth coding technique. This system allows visualization using several planes of depth of textured images, such that all depth cues are present under certain limits. The 3D volume can be observed with no auxiliary devices, such as stereo glasses.

This paper implements a three dimensional method of live streaming which involves holograms. Holographic video streaming is the next generation of video streaming which just requires an additional holographic prism which acts as a display. To display a hologram on the prism, a holographic video is generated of the live stream using an HTML code. This project examines the new method of video transmission using a cost-effective system called raspberry pi and reception using an augmented reality technology of holographic projection. It presents the next level of video streaming using holograms as the medium, without using costly augmented reality gears. This improvement in the 2D technology can prove to be highly advantageous in the field of medical education. The system uses light diffraction from the screen which provides the holographic video to form a hologram on the prism. The result proves efficiency in transmission and reception of the live stream and also generates fine holograms.

We present a scalable holographic system design targeting multi-user interactive computer graphics applications. The display uses a specially arranged array of micro-displays and a holographic screen. Each point of the holographic screen emits light beams of different color and intensity to the various directions, in a controlled manner. The light beams are generated through a light modulation system arranged in a specific geometry and the holographic screen makes the necessary optical transformation to compose these beams into a perfectly continuous 3D view. With proper software control, the light beams leaving the various pixels can be made to propagate in multiple directions, as if they were emitted from physical objects at fixed spatial locations. The display is driven by DVI streams generated by multiple consumer level graphics boards and decoded in real-time by image processing units that feed the optical modules at high refresh rates. An OpenGL compliant library running on a client PC redefines the OpenGL behavior to multicast graphics commands to server PCs, where they are re-interpreted for implementing holographic rendering. The feasibility of the approach has been successfully evaluated with a working hardware and software 7.4M pixel prototype driven at 10-15Hz by three DVI streams.

ACM SIGGRAPH Computer Graphics, 1997

Computer graphics is confined chiefly to flat images. Images may look three-dimensional (3D), and sometimes create the illusion of 3D when displayed, for example, on a stereoscopic display [16, 13, 12]. Nevertheless, when viewing an image on most display systems, the human visual system (HVS) sees a flat plane of pixels. Volumetric displays can create a 3D computer graphics image, but fail to provide many visual depth cues (e.g. shading texture gradients) and cannot provide the powerful depth cue of overlap (occlusion). Discrete parallax displays (such as lenticular displays) promise to create 3D images with all of the depth cues, but are limited by achievable resolution. Only a real-time electronic holographic ("holovideo") display [11, 6, 8, 7, 9, 21, 22, 20, 2] can create a truly 3D computer graphics image with all of the depth cues (motion parallax, ocular accommodation, occlusion, etc.) and resolution sufficient to provide extreme realism [13]. Holovideo displays prom...

Chinese Optics Letters, 2013

As the flat panel displays (Liquid Crystal Displays, AMOLED, etc.) reach near perfection in their viewing qualities and display areas, it is natural to seek the next level of displays, including 3D displays. There is a strong surge in 3D liquid crystal displays as a result of the successful movie Avatar. Most of these 3D displays involve the employment of special glasses that allow one view perspective for each of the eyes to achieve a depth perception. Such displays are not real 3D displays. In fact, these displays can only provide one viewing perspective for all viewers, regardless of the viewer's position. In addition, a fundamental viewing problem of focusing and accommodation exist that can lead to discomfort and fatigue for many viewers. In this paper, the authors review the current status of stereoscopic 3D displays and their problems. The authors will also discuss the possibility of using flat panels for the display of both phase and intensity of video image information, leading to the ultimate display of 3D holographic video images. Many of the fundamental issues and limitations will be presented and discussed.

1988

The invention of holography has sparked hopes for three-dimensional image transmission systems analogous to television. The extraordinary spatial detail of ordinary holographic recordings requires unattainable bandwidth and display resolution, effectively preventing its commercial development. However, the essential bandwidth of holographic images can be reduced enough to permit their transmission through fiber optic or coaxial cable, and they can displayed by raster scanning the image of an acousto-optic modulator. The design and construction of a working demonstration of the principles involved is also presented.