Heliodisplay – Engineering Seminar. Heliodisplay. INTRODUCTION. Even though modern technology has invested millions, even billions, into projection screen. Aknowldgement 2 Heliodisplay Seminar Report 13 Dept. of Electronics ELDHOSE GEORGE 2 ACKNOWLEDGEMENT Motivation is a driving. 11/3/ Seminar topic on Heliodisplay 2; 3. Introduction • Hi-Tech projector that displays pictures in the air. • An interactive free space display.
|Published (Last):||10 September 2009|
|PDF File Size:||10.60 Mb|
|ePub File Size:||11.40 Mb|
|Price:||Free* [*Free Regsitration Required]|
Post a Comment leave your opinion. Heliodisplay – Engineering Seminar. Even though modern technology has invested millions, even billions, into projection screen technology, high definition projectors, and even projectors for our cell phones, we have forgotten that we will always need something to project on.
Unfortunately, with the tragic proliferation of advertising these days, we are probably looking at a future world where all the space on the buildings is taken for billboards and other various projected ads. The only place that would not be taken is the spaces that people walk through.
However, that is an option that we can use, with the Heliodisplay or Fogscreen projector. Current technologies attempt to create the visual perception of a free-floating image through the manipulation of depth cues generated heliodieplay two-dimensional data employing well-established techniques.
A few examples of these include stereoscopic imaging via shutter or polarized glasses, as well as auto-stereoscopic technologies composed of lenticular screens directing light from a conventional display, or real-imaging devices utilizing concave mirror arrangements.
All of these technologies suffer convergence and accommodation limitations. In order to resolve this visual limitation, the image and its perceived location must coincide spatially. A well-established method solving this constraint is by projection onto an invisible surface that inherently possesses a true spatially perceived image location; yet prior art method s rendered poor image fidelity.
In latea small company from the San Francisco Bay Area demonstrated a unique revolutionary display technology. The then prototype device projected an image in thin air just above it, creating an illusion of a floating hologram. The development of this distinctive technology, dubbed Heliodisplay by its developer Chad Dyner, began early this decade after Dyner decided to trade a promising career as an architect to become an inventor.
Dyner bought an ordinary digital projector, took it apart, and spent entire days trying to figure out a way to stop in midair the light coming from the projector without engaging a traditional screen. The Heliodisplay or Fog Heliodispla technology from IO2 Technologies can project computer-based images onto thin particles of moisture.
The airborne film of moisture generated by the device — the black box with the large slot pictured in the foreground — captures the light from the projector to allow the images to take shape. Displaying an image using conventional projectors requires a non-transparent medium, typically screens, walls, or even water, heliodisplwy air, which is transparent, cannot be used.
A more recent development is the FogScreen, which creates an image in midair by employing a large, non-turbulent airflow to protect the dry fog generated within from turbulence.
The result is a thin, stable sheet of fog, sandwiched between helioisplay layers of air, on which an image can be projected and even walked through. The Heliodisplay creates a similar effect, but, instead of fog, it uses a cloud of microscopic particles whose specific nature is one of the secrets Dyner keeps close to the vest.
Inthe U. Patent Office hwliodisplay Dyner a patent for a “method and system for free-space imaging display and interface”. Apparently, the Heliodisplay creates a particle cloud by passing the surrounding air through a heat pump, which in turn cools the air to a level below its dew point, where it condensates, and is then collected to create an artificial cloud.
The particle cloud is composed of a vast number of individual micro droplets, between microns in diameter, too small to be visible to the naked eye, held together by surface tension. The focus and illumination intensity of the projected image can be controlled by changing some of the cloud’s properties, enabling a sharper and brighter image. Heliodisplay yeliodisplay computer-based images onto thin particles of moisture generated by a particulate emitting device.
The moisture film generated by the device captures the light from the projector to allow the images to take shape. IO2 Technology is actually marketing the M2 to corporate customers who would use the device as a novel way to display the company’s logo or as a strikingly impressive advertising and promotional tool for exhibitions.
The Heliodisplay from IO2 Technologies can project any kind of static or moving image, from photographs to movies, without the need for a solid screen. Pictured here, Figure 1. The user can interact with floating images or video, and manipulate them as you could with a mouse, including clicking and dragging.
With the lightest of touches, users can grab and shuffle images around, zoom in and out to see the minutest of details, or simply wave their hands over an image to make it come alive on screens as large as inches or centimetres.
Uses no additives or chemicals. World-stabilized 3D objects are possible using position and orientation head tracking to always draw objects from the correct point of view for the user.
More sophisticated displays present different left and right images for stereo separation effects, but in general focal length remains constant across the entire image. The surface can be viewed from arbitrary viewpoints with proper eye accommodation since each point of light has a real origin in 3D. Tracking of the viewer is not necessary. Volumetric displays are based on a broad and diverse collection of various methods, technologies and ideas. Traub’s display creates a virtual image by varying the focal length of a mirror to produce a series of 2D images at different apparent depths.
They are more suited for computer graphics than video applications due to the difficulty in capturing suitable natural imagery in 3D.
One drawback is typically image transparency where parts of an image that are normally occluded are seen through the foreground object. Yet another difficulty that could give an unrealistic appearance to natural images is that of the inability to display surfaces with a non-Lamberrian intensity distribution. The dnp HoloScreen and the HoloClear displays make the screen practically transparent from the viewer’s point of view, showing only projected objects.
They are examples of screens that consist of an acrylic plate that is coated with a holographic film, such that it catches only light that is projected from a degree angle.
A bright and clear image can thus be obtained in daylight conditions, while the display is transparent from the opposite side. These types of heliodosplay displays are single-sided and not penetrable. A serious limitation of such a setup, however, is its inherent single- 2. The magnitude and wetness of these screens, as well as heliodisplau large water consumption, make them impractical for indoor or small-scale applications, as well heluodisplay preclude the viewers from comfortably passing through the display space and seeing crisp images from short neliodisplay.
However, these water screens may be large and look good if viewed from afar and on-axis. Semimar dispersion is caused by turbulence and friction in the fog’s flow, which disrupts the desired smooth planar surface, causing projected points of light to streak into lines. This streaking causes severe distortion of the image from off-axis viewing angles.
Download the Seminar Report for Helio Display
Perspecta is another unique display technology, developed by Actuality Systems. Perspecta is a true 3D display capable of showing a 3D object perceived when simply walking around the display; the M2 displays a 2D image in midair, creating the illusion of depth. While the Perspecta is currently used mainly for medical and research purposes, the M2 is intended primarily for corporate use as a promotional or advertising tool at this stage.
The Perspecta is an enclosed device with lower resolution but with the capability to display a full 3D image and video with almost no flickering or wavering effects. A future display might incorporate the best of both worlds: The original M1 units produced by IO2 were advanced prototypes and proof-of-concept, but a few were sold to early adopters through channels such as eBay.
The M2-series is the second-generation mid-air projector with a larger inch diagonal 76cm display area with The new M2 has been redesigned enabling higher image quality, resolution, brighter and overall performance. The interactive M2i version includes virtual touchscreen capability. The M2 is about the size of a tower desktop computer case turned on its side. The M2 projects its The native resolution of the M2 is x though it can support up to xand the image can be viewed from as much as a degrees angle.
The M2i model includes a proprietary system, called Heliocast, for interactively controlling the displayed image and drivers for a standard PC. A sensor inside the M2 identifies the movement of the user’s hand in the area of the projected image and the Heliocast software calculates the movement of the object projected. The new third-generation M3 version launched on February 28th It has the same basic specifications as the M2 but is said to be much quieter, with improved brightness and clarity and more stable operation with an improved tri-flow system.
Apart from displaying at a standard ratio of 4: There is also an interactive version called the M3i. The M30 is the updated version of the M3, which fits into the current model numbering system, 30 designating the diagonal screen size.
The M50 has a 50″ diagonal image, equivalent to displaying a life-size head-and shoulders person.
The M has a ” diagonal image, equivalent to displaying a large full-body person heliocisplay 2 meters tall. Heliodisplay looks high-tech, but it relies on fairly simple technologies.
The Heliodisplay transforms ambient air using a proprietary multi-stage system of modifying the optical characteristics within a planar region in which polychromatic light is scattered on this surface such that the image appears visible to the viewer.
The Heliodisplay transforms surrounding air into a unique screen of fine vapour, suspended in mid-air to create a nearly invisible screen into which any image can be projected. The machine heloidisplay modifies the air above a video projector, creating a screen, which can display any kind of video. Images are then projected onto the water vapour via weminar internal projector and an external mirror, but you can also use a standard external projector of your own and leave out the mirror, which makes the final effect more compelling.
The display can create a true 3D hologram effect when the right content is used. The image is two-dimensional, can be seen from several angles, and be manipulated by hand.
The image manipulation comes courtesy of a row of infrared light emitters positioned just in front of where the water vapour emerges. The system senses when your finger breaks through the infrared beams and interprets your movements in a way not dissimilar to a touch-sensitive screen — except there’s no heliodisplat.
Heliodisplay projects still images or dynamic images, text or information data onto an invisible to near-invisible particle cloud screen surface. The particle cloud exhibits reflective, refractive and transmissive properties for imaging purposes when a directed energy source illuminates the particle cloud. Heliodisplay images are not holographic although they are free-space, employing a rear projection heeliodisplay in which images are captured onto a nearly invisible plane semijar transformed air.
The M2i Heliodisplay can run for up to 10 hours on 2 litres of water and can display at resolutions of up to 1,x1, pixels.
Hekiodisplay audience sees a floating mid-air image or video. These projected images and video are actually two-dimensional but appear 3D since there is no physical depth reference. Conventional displays have the benefit of being enclosed in solid frame or case with lights shining directly towards the audience. The Heliodisplay projections are suspended in thin air, so you will notice some waviness to the screen stability and the hwliodisplay and clarity of the image is subject to ambient light conditions and optimization of display settings.
Although Heliodisplay images are easily heliodjsplay in an office environment, this system is unique, and therefore has to compete with hheliodisplay surroundings, so contrast becomes paramount for optimal viewing. Dark background emphasizes the contrast of the image and is highly encouraged when designing a location to view the display. As dark areas of the image may appear invisible, the image may be more realistic than on a projection screen, although it is still not volumetric.
Viewing any type of display in direct sunlight is almost impossible and also applies to the Heliodisplay.
HELIODISPLAY SEMINAR REPORT EBOOK
The darker the room, the better is the result. For the best result, a dark background is highly recommended. Like any rear projection system, the images are best seen within 70 degrees to either side. The necessity of an oblique viewing angle to avoid looking into the projector’s light source may be a disadvantage Viewing requires no special glasses.
Operating the device will not change a room’s environment, air quality or other conditions.