3D Holographic Projection TechnologyA Seminar report Submitted in partial fulfillment of the requirements for the award of muscpertastsunear.tk Degree in. Seminar Report PDF 3D Holographic Technology - Download as .rtf ), PDF Seminar 3D Holographic Projection Technology e.g. but digitally. The PDF seminar report on 3D Holographic Projection Technology explains the working and its applications focused on various categories of.
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3D Holographic Projection Technology Seminar Report pdf. Abin Baby. 01 July Holography is a technique that allows the light scattered from an object to. 3D Holographic Projection Technology Seminar Report Dept. of ECE 1 YCET Kollam CHAPTER 1 INTRODUCTION It can often see the. This research papers examines the new technology ofHolographic Projections. It highlights the importance and need of this technology and how it represents.
Recent developments in computers and computer graphics have made spatial 3D images more practical and accessible.
The computational power now exists, for example, for desktop workstations to generate stereoscopic image pairs quickly enough for interactive display. At the high end of the computational power spectrum, the same technological advances that permit intricate object databases to be interactively manipulated and animated now permit large amounts of image data to be rendered for high quality 3D displays.
Growing examples include medical diagnostics, flight simulation, air traffic control, battlefield simulation, weather diagnostics, entertainment, advertising, education, animation, virtual reality, robotics, biomechanical studies, scientific visualization, and so forth. The increasing interest and popularity are due to many factors. In our daily lives, we are surrounded by synthetic computer graphic images both in principle and on television.
People can nowadays even generate similar images on personal computers at home. We also regularly see holograms on credit cards and lenticular displays on cereal boxes. Without the benefit of 3D rendering, even high quality images that have excellent perspective depictions still appear unrealistic and flat. For such application environments, the human depth cues of stereopsis, motion parallax, and perhaps to a In other aspects of 3D display technologies, such as the hardware needed for viewing, the broad field of virtual reality has driven the computer and optics industries to produce better stereoscopic helmet mounted and boom-mounted displays, as well as the associated hardware and software to render scenes at rates and qualities needed to produce the illusion of reality.
However, most voyages into virtual reality are currently solitary and encumbered ones: A common form of such stereoscopic displays uses shuttered or passively polarized eyewear, in which the observer wears eyewear that blocks one of two displayed images, exclusively one each for each eye.
Examples include passively polarized glasses, and rapidly alternating shuttered glasses. While these approaches have been generally successful, they have not met with widespread acceptance because observers generally do not like to wear equipment over their eyes. In addition, such approaches are impractical, and essentially unworkable, for projecting a 3D image to one or more casual passersby, to a group of collaborators, or to an entire audience such as when individuated projections are desired.
Even when identical projections are presented, such situations have required different and relatively underdeveloped technologies, such as conventional auto stereoscopic displays. Thus, a need still remains for highly effective, practical, efficient, uncomplicated, and inexpensive auto stereoscopic 3D displays that allow the observer complete and unencumbered freedom of movement. Additionally, a need continues to exist for practical auto stereoscopic 3D displays that provide a true parallax experience in both the vertical as well as the horizontal movement directions.
A concurrent continuing need for such practical auto stereoscopic 3D displays that accommodate multiple viewers independently and simultaneously. A particular advantage would be afforded if the need could be fulfilled to provide such simultaneous viewing in which each viewer could be presented with a uniquely customized auto stereoscopic 3D image that could be entirely different from that Yet another urgent need is for an unobtrusive 3D viewing device that combines feedback for optimizing the viewing experience in combination with provisions for 3D user input, thus enabling viewing and manipulation of virtual 3D objects in 3D space without the need for special viewing goggles or headgear.
In view of the ever increasing commercial competitive pressures, increasing consumer expectations, and diminishing opportunities for meaningful product differentiation in the marketplace, it is increasingly critical that answers be found to these problems. Moreover, the ever- increasing need to save costs, improve efficiencies, improve performance, and meet such competitive pressures adds even greater urgency to the critical necessity that answers be found to these problems.
In Massachusetts, a year-old and technology graduate, called Chad Dyne invented an air projection and interactive technology, which is a milestone of the display technology, and it can wall project images with interactive features in the airflow.
The technology is the principle of the mirage, and the image is projected on the water vapor, and it can form images the strong level and three-dimensional sense on the molecular vibration is not balanced. Science and Technology, the Japanese company, had invented the 3D images by the laser beam projecting the entity.
This technique is that the mixed gas of nitrogen and oxygen, when they disperse in the air, becomes the hot syrupy substance, and forms a transient 3D image in the air. This approach is achieved by a small blasting constantly in the air. The researchers in the Innovation and Technology Institute, University of South California, announced that they successfully developed a degree holographic display, and this technique is that the images are projected on a high-speed rotating mirror, which achieve the three-dimensional images.
A pseudo-holographic projection is applied in commercial purposes, which has two categories: Hence the working of holography is divided into two phases: Basic tools required to make a hologram includes a red lasers, lenses, beam splitter, mirrors and holographic film. Holograms are recorded in darker environment; this is to avoid the noise interference caused by other light sources.
The recording of hologram is based on the phenomenon of interference. It requires a laser source, a plane mirror or beam splitter, an object and a photographic plate. A laser beam from the laser source is incident on a plane mirror or beam splitter. As the name suggests, the function of the beam splitter is to split the laser beam. One part of splitted beam, after reflection from the beam splitter, strikes on the photographic plate. This beam is called reference beam.
While other part of splitted beam transmitted from beam splitter strikes on the photographic plate after suffering reflection from the various points of object. This beam is called object beam.
The object beam reflected from the object interferes with the reference beam when both the beams reach the photographic plate. The superposition of these two beams produces an interference pattern in the form of dark and bright fringes and this pattern is recorded on the photographic plate. The photographic plate with recorded interference pattern is called hologram. Photographic plate is also known as Gabor zone plate in honour of Denis Gabor who developed the phenomenon of holography.
Each and every part of the hologram receives light from various points of the object. Thus, even if hologram is broken into parts, each part is capable of reconstructing the whole object. This type of hologram produces very high quality images but is very expensive to create. Transmission holograms form images by transmitting a beam of light through the hologram.
This type of hologram is more commonly seen since they can be inexpensively mass-produced.
seminar report.pdf 3D holographic technology
Embossed holograms, such as those found on credit cards, are transmission holograms with a mirrored backing. The beam of lighthits the beam splitter, which is a semi-reflecting plate that splits the beam into two: The object beam is widened by a beam spreader and the lightis reflected off the object and is projected onto the photographic plate.
The reference beam is also widened by a beam spreader and the light reflects off a mirror and shines on the photographic plate as shown in the Fig. Recording of Reflex holograms Image recording of Reflection hologram 6. The reconstruction beam is positioned at the same angle as the illuminating beam that was used during the recording phase. The virtual image appears behind the hologram at the same position as the object as shown in the Fig.
Image reconstruction of Reflection hologram A beam splitter and beam spreaders are also used in the recording of transmission holograms.
After the object beam passes through the beam spreader, the light is reflected off a mirror and onto the object. The object beam is then reflected onto the photographic plate.
The reference beam is also reflected off a mirror and shines on the photographic plate. The incoming object and reference beams create a resultant wave. The amplitude and phase of the resultant wave is recorded onto the photographic plate as an interference pattern as shown in the Fig. Image recording of Transmission hologram 6. When the reconstruction beam is placed at the right angle, three beams of light will pass through the hologram. An undiffracted beam zeroth order will pass directly through the hologram but will not produce an image.
A second beam forms the primary virtual image first order that is diffracted at the same angle as the incoming object beam that was used during recording. A third beam forms the secondary real image first order. As we can see in the Fig. Between the image beams, the angle is twice as large.
Image reconstruction of Transmission hologram If we look at the hologram at the same angle as the primary image beam also same angle as recording object beam , we will see a virtual image of the object located behind the hologram as shown in the Fig. Image reconstruction, primary image If we look at the hologram at the same angle as the secondary image beam, we will see a real image of the object located in front of the hologram as shown in the Fig.
Image reconstruction, secondary image Holography is a technique that enables a light field, which is generally the product of a light sources scattered off Objects, to be recorded and Later reconstructed when the original light field is no longer present, due to the absence of the original objects.
Holography can be thought of as somewhat similar to sound recording, whereby a sound field created by vibrating matter like musical instruments or vocal cords, is encoded in such a way that it can be reproduced later, without the presence of the original vibrating matter.
It starts with the patented foil, completely invisible to the naked eye. This is then reflected upwards, reflects off the foil and gives s the impression of a real 3D volumetric image on stage. A hologram is recorded by exposing a light- sensitive sensor for example, photographic film, or a high-resolution CCD simultaneously to a coherent beam of light and the reflection of that beam of light from the scene being recorded. The sensor records not an image of the scene, but the interference typically taking place at the surface of a sheet of film between the image and the original coherent light.
This interference pattern contains all the information in the light field at the sensor. Recorded hologram from coherent beam of light To play back a hologram, the interference pattern of the original hologram is reproduced, and a coherent beam of light typically having the same wavelength as the original laser illumination source is directed onto the pattern along the same direction as was the reference beam.
The reconstruction beam is diffracted from the interference pattern, and thereby reproduces the 3D image information of the subject of the hologram. For us, a glowing but seemingly solid image suddenly appears floating in space. Appearance of Virtual Image through reconstructed waveforms With video displays being of considerably greater value than static 3D picture frames, a dynamic substitute for photographic film has long been sought, with varying degrees of success.
An active holographic display is based on a spatial light modulator A simple example is an overhead projector, wherein the transparency acts as an SLM. There have been a lot of interactive systems which aim to enable the users to handle 3D graphic objects with their hands. It utilizes the nonlinear phenomenon of ultrasound; acoustic radiation pressure. When an object interrupts the propagation of ultra-sound, a pressure field is exerted on the surface of the object.
Owing to this hand-tracking system, the users can handle the floating virtual image with their hands. As the spinning mirror changes direction, different perspectives of the projected image is shown.
The University of Southern California project is more realistic compared to other holographic attempt.
Dimensional Studios, a leader in 3D visual display solutions has recently introduced its unparalleled digital signage in the UK.
Its aim is for advertising agencies and consumer products who wish to catch a huge impact from this new break through media. However, application of holography in education is not new. Although, the distance of transition was minimal, long distance projection is possible since the images are transmitted over the internet.
Holography differs from video conferencing because the teacher appears to be in the classroom. While in video conferencing users can easily notice a screen and a camera.
In these movies, people relate with holograms as they would relate with real human. Although, what people see in these movies are not real holograms, they depict what a real hologram looks like and future capabilities of holography.
In the musical industry, holography is being used for concerts. In this case, the musicians can be far away in New York while performing in several cities around the world. Today, three dimensional television and cinemas are becoming common, and there is more to come. Also experts found that viewing 3D television over a long period can cause headache and eye strain due to new sensory experience.
Since holography makes beamed image look like real, it should not have any future strain on the eyes nor generate headache. Scientists at Polaroid Corp. Holographic televisions may be possible within a decade but at a high price.
Holography is a diffraction-based coherent imaging technique in which a
MIT researchers recently made a prototype that does not need glasses, but true holographic commercial TV will take a year to appear. One day all TVs could be holographic, but will take years. In future, holographic displays will be replacing all present displays in all sizes, from small phone screen to large projectors A concurrent continuing need is for such practical auto stereoscopic 3D displays that can also accommodate multiple viewers independently and simultaneously.
A particular advantage would be afforded if the need could be fulfilled to provide such simultaneous viewing in which each viewer could be presented with a uniquely customized auto stereoscopic 3D image that could be entirely different from that being viewed simultaneously by any of the other viewers present, all within the same viewing environment, and all with complete freedom of movement therein.
Screenless Display Seminar Report
A high resolution three dimensional recording of an object. Another feature is that these are glasses free 3D display. This 3D technology can accommodate multiple viewers independently and simultaneously, which is an advantage no other 3D technology can show.
The 3D holographic technology does not need a projection screen. The projections are projected into midair, so the limitations of screen are not applicable for 3D holographic display Holographic Technology and Spectral Imagining has endless applications, as far as the human mind can imagine. Holography being the closest display technology to our real environment may just be the right substitute when reality fails.
With holography, educational institutions may become a global village sooner that people thought, where information and expertise are within reach. Knowledge sharing and mobility will only cost a second and learning will become more captivating and interactive.
seminar report.pdf 3D holographic technology
First, there is an urgent need to address the infrastructural deficiencies limiting the application of holography in education. More interestingly, the display medium of holography is very important.
Holography is a technique that allows the light scattered from an object to be recorded and later reconstructed. When interference patterns on the film are illuminated by the coherent light a three-dimensional image is produced. These 3D images are called holograms. It is especially useful to be able to record a full image of an object in a short exposure if the object or space changes in time.
Holography is a technique that is used to display objects or scenes in three dimensions. A holoprojector will use holographic technology to project large-scale.
The integration of the real-time or electro-holographic principle into display technology is one of the most promising but also challenging developments for the future consumer display and TV market. The reflection hologram The reflection hologram. The virtual image can be very sharp and deep. A holographic image can be generated 3 Dept. The typical transmission hologram is viewed with laser light. Seminar 3D Holographic Projection Technology e.
On the other hand. Computer generated holograms have the advantage that the objects which one wants to show do not have to possess any physical reality at all completely synthetic hologram generation. Seminar 3D Holographic Projection Technology 3. Seminar 3D Holographic Projection Technology 4.
Recording of reflex holograms 7 Dept. Image recording 8 Dept. Image reconstruction 9 Dept. Image recording 10 Dept.
Image reconstruction Figure 6: Image reconstruction. Seminar 3D Holographic Projection Technology 5.
Holographic Projection Technology: The World is Changing. Stephan Reichelt. Hagen Stolle and Armin Schwerdtner. Masafumi Takahashi. Gerald Futterer. Ralf Haussler. Thomas J. Advances in Lasers and Electro Optics April Norbert Leister. ISSUE 2. MAY 2. Ahmed Elmorshidy.
Kei Nakatsuma. The University of Tokyo. Holographic 3-D Displays. Takayuki Hoshi. Flag for inappropriate content. Related titles. Encyclopedia of Scientific Principles Laws and Theories. Jump to Page. Search inside document. Iren Harutyunyan. Jay Barnedo.Dimensional Studios, a leader in 3D visual display solutions has recently introduced its unparalleled digital signage in the UK.
Then mail to us immediately to get the full report. A Seminar report Submitted in partial fulfillment of the requirements for the award of B. In this article, we present you the list of top 10 emerging technology trends in Civil Engineering that are significantly improving the co Holographic 3-D Displays. The technique to optically store, retrieve, and process information. Only holography allows the reconstruction of natural-looking 3-D scenes, and therefore provides observers with a completely comfortable viewing experience.
There have been a lot of interactive systems which aim to enable the users to handle 3D graphic objects with their hands. In this case, the musicians can be far away in New York while performing in several cities around the world.
A viewing angle is especially what is needed to maximize the use of holography in education.