COMPUTER SCIENCE AND ENGINEERING SYNERGY INSTITUTE OF ENGINEERING AND TECHNOLOGY, DHENKANAL
Now You FOG See It, Now SCREEN: You Walk Through It Presented by:
Guided by: XxX
Sovan Misra CS-07-42 0701230147
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DEPARTMENT OF COMPUTER SCIENCE & ENGINEERING
SYNERGY INSTITUTE OF ENGINEERING AND TECHNOLOGY
DHENKANAL
CERTIFICATE
Certified that this is a bonafide record of the seminar entitled FOG SCREEN done by the following student SOVAN MISRA of the 7th semester, Computer Science and Engineering in the year 2010 in partial fulfilment of the requirements of the award of Degree of Bachelor of Technology in Computer Science and Engineering of Synergy of Synergy Institute Of Engineering And Technology, Dhenkanal
XxX Seminar Guide
XxX Head of the Department
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ACKNOWLEDGEMENT
I thank my seminar guide XxX Jena, Lecturer, SIET, for her proper guidance, and valuable suggestions. I am indebted to XxX, the HOD, Computer Science department & other faculty members for giving me an opportunity to learn and do this seminar. If not for the above mentioned people my seminar would never have been completed successfully. I once again extend my sincere thanks to all of them.
SOVAN MISRA
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CONTENTS
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INTRODUCTION y
BRIEF HISTORY
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WHAT IS FOG SCREEN
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UNDER THE SURFACE
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FORMATION OF FOG SCREEN y
HOW FOG MACHINE WORKS
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TECHNOLOGY CHALLENGED
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APPLICATION
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ADVANTAGES
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LIMITATIONS
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OPPERTUNITIES
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SUCCESS OF FOG SCREEN
REFERENCES
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ABSTRACT Fog Screen is breakthrough technology that that allows projection of high quality images in the air. It I t is currently the only walk-through projection screen. screen. You can literally use the air as your user interface by touching only the air with your bare hands. The Th e screen is created by using a suspended fog generating generating device with no frame around, and works with video projectors. The fog they use is dry, so it doesnt make you wet even if you stay under the Fog Screen device for a long time. The fog is made of ordinary water with no chemicals ch emicals what soever. With two projectors, you can project different images on both sides of the screen. It is a display device which is the application of computer graphics.
INTRODUCTION
y
Inspired by science fiction movies such as Star Wars, two
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Finnish virtual reality researchers created the Fog Screen to recreate some of the effects from these movies in real life. y
Fog Screen is an exciting new projection technology that
allows to project images and video onto a screen of dry
fog, creating the illusion that the images are floating in midair
Fog Screen is the world¶s first immaterial walk-through projection screen. Its Qualities, in particular the walkthrough capability, set Fog Screen apart from other displays and thus created a seemingly successful market for its products. y
The Fog Screen is an innovative display technology that allows for projections on a thin layer of dry fog. Imagine the traditional pull down screen that is found in many classrooms today. Instead of a screen being pulled down from the ceiling, fog is pushed down and held in place by several small fans, allowing for a consistent surface for display. y
Brief history It was invented by two Finnish virtual reality researchers Fog Screen, which was initially known as WAVE (Walkthrough Virtual Environment), was announced in 7|Page
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December 2001. The first public demonstration of Fog Screen was in Finland in October 2002.Till then it is in use u se in different areas and improvements improvements are being done to increase its effectiveness. effectiveness. Inspired by science fiction movies such as Star Wars, two Finnish virtual reality researchers created the Fog Screen to recreate some of the effects from these movies in real life. Fog screen is one such immaterial screen and uses the method of fog on which to project imagery (DiVerdi et al. 2006). Fog Screen is a patented technology, which Rakkolainen, one of the senior researchers and founders behind this technology, describes as an immaterial projection screen that consists of air and a little humidity, and enables high-quality projected images in thin-air, as well as many new applications.
Palovuori (2006) writes that the FogScreen creates a large non-turbulent non-turbulent airflow to protect a dry fog flow inside it from turbulence. The Fog Screen debuted at the 2002 Turku Science Fair. The Fog Screen Company was founded in 2003 and volume 8|Page
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Fog Screen is a patented technology, which Rakkolainen, one of the senior researchers and founders behind this technology, describes as,³«an immaterial projection screen that consists of air and a little humidity, and enables high-quality projected images in thin-air, as well as many new applications.´. Fog Screen is an exciting new projection technology that allows you to project images and video onto a screen of dry fog, creating the illusion that the images are floating in midair. Fog Screen is a just that, a 2D projection screen, but not a common opaque screen like hundreds of others in the market, rather an immaterial screen. The word immaterial in relation to display dis play systems refers to those that create that sense of imagery floating in mid-air, usually created using water, smoke or fog. Fog screen is one such immaterial screen and uses the method of fog on which to project imagery. The Fog Screen is an innovative display technology that allows for projections on a thin layer of dry fog. Imagine the traditional pull down screen that is found in many classrooms today. Instead of a screen being pulled down from the ceiling, fog is pushed down and held in place by several small fans, allowing for a consistent surface for display. A user may simply stand back and view the material but can also reach or walk through the fog. A user may also interact with objects displayed in the fog with the use of an input device like a data glove, a tracked wand, or simply using hands (see 10 | P a g e
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Technical Analysis). Currently, there are only nine Fog Screens available in the world. Fog Screen is an exciting new projection technology that allows you to project images and video onto a screen of dry fog, creating the illusion that the images are floating in midair. You can literally use the air as your user interface by touching only the air with your bare hands. The screen is created by using a suspended fog generating device with no frame around, and works with video projectors. The fog they use is dry, so it doesnt make you wet even if you stay under the Fog Screen device devic e for a long time. The fog is made of ordinary water with no chemicals whatsoever. The Fog Screen is a display technology that instead of using a traditional screen uses a thin layer of dry fog as the display surface. The system starts with water that is held in a large plastic container or comes from a regular water pipe. This water is drawn through a plastic tube via a small engine. Users have the ability to control the density and flow of the fog and a nd the strength of the sandwiching airstreams. With two projectors, we can project different images on both sides of the screen. The Fog Screen is a new invention which makes objects seems to appear and move in thin air! It is a screen you can walk through! The Fog Screen is created by using a suspended fog
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generating device; there is no frame around the screen. The installation is easy: just replace the conventional
reen with Fog Screen. We dont need to change anything
sc
else it works with standard video projectors. The fog we are using is dry, so it doesnt make you wet even if you stay under the Fog Screen device for a long time. The fog is made of ordinary water with wi th no chemicals whatsoever wha tsoever.. With two projectors, you can project different images on both sides of the screen crisp, and protected from turbulence. turbulence. . All the important principles of Fog Screen technology have patent pending. The basic components of the screen are a laminar, on-turbulent airflow, and a thin fog screen created this way, the fog screen is an internal part of the laminar airflow, and remains thin and turbulence.
Under the Surface
As already mentioned, the screen is made up of a layer of fog. It is therefore quite unique that such a substance could allow for clear and undisturbed u ndisturbed image projection. The secret lies in how this layer of fog in maintained. Palovuori (2006) writes that the Fog Screen creates a large 12 | P a g e
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non-turbulent airflow airflow to prot pr ot ec t a dr y fog flow inside it from turbul ence (see Figure 1 Th e out er airflow ma y get
slightly turbulent, but th e inn er fog la yer r emains thin and crisp. In a sense, th e out er air-flows are like air curtain s that sandwich th e fog flow and maintain it s int egrity.
principle of the Fog Screen
DiVe rdi (2006 furth er e plains that ordinar y tap water (dropl ets of 2-3 2-3 micron s becom es trapp ed in side this inner la yer, and that eve n though th e fog is mad ma de of wat er, it appears dry to the touch, just like air. Therefor e, the technology is rather simple in nature, making use of
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water and one device located above the screen to maintain the above mentioned airflow. The Fog Screen works very much like an ordinary screen in terms of projection properties. Fog Screen is best when used for real projection situations. Distance between projector and screen should be a minimum of 2 meters.
Formation of f og og
screen
It is formed by using ordinary tap water and
digital technology like ultrasonic device to create a thin layer of dry fog which is sandwiched between two air-curtains.
The fog is created by suspended fog generating
device.
The fog is made up of ordinary tap water with no
chemicals
Fog Screen creates a ³dry´ fog by ensuring that the water droplets are in the range of 2-3 microns in size and are electro statically charged so that they move around and away from other objects. The fog is made within the device using water and ultrasonic waves. If you hold your hands in the fog flow, the fog feels dry and cool, and your hands do not get wet.
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After the screen is formed, images can be projected onto it. The screen can be translucent or fully opaque. The fog we are using is dry, so it doesn¶t make you wet even if you stay under the Fog Screen device for a long time. The fog is made of ordinary water with no chemicals whatsoever. With two projectors, you can project different images on both sides of the screen. The founders of the Fog Screen were intrigued with the prospect of creating an image that could float in the air and that people could walk through (that is the Princess Leia effect). They set out to make a projected image float in the air by using different media such as dust, water, fog. And then a mist of tiny water droplets. They then had to iterate their design repeatedly to ensure that people would not get wet and that the Fog Screen could operate within a broad range of environmental conditions. The ultrasonic transducer is used to divide the water into small and tiny water droplets as the fog which we are using here is completely dry and it is light. If we will take lager water droplets then it will create wet fog which can¶t be used in the formation of screen. The fog we are using is dry, so it doesn¶t make you wet even if you stay under the Fog Screen device for a long time. With two projectors, you can project different images on both sides of the screen.
Diagram of Fog S creen generation
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Here in two side air flow is given to make a constant flow of fog for the display of image. Because if the outside air will enter then it may create disturbance in displaying the image. As the fog here we are using are dry and very light.
The fog is made within the device using water and ultrasonic waves. If you hold your hands in the fog flow, the fog feels dry and cool, and your hands do not get wet. After the screen is formed, images can be projected onto it. The screen can be translucent or fully opaque.
og How f og
machine
wo rks
Fog Screen technology is a high-tech version of the technology in a cool air humidifier. y Tap water is pumped into the fog tank where it is y
blasted with ultrasound, turning it instantly into a thick fog made of tiny water particles 2-3 microns in diameter. The tanks internal design plus 3 sets of fans work together to create a very thin wall of mist about half of an inch 16 | P a g e
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thick. One set of fans blows the fog downwards while the other two sandwiches the fog between air curtains so that it becomes a smooth projection screen. sc reen. Fog Screen works much like many screens in terms of its projection properties and requires a 2kw power supply. A major difference is the need for a water supply, with onscreen using fifty litres of tap water per hour. The Device situated above the fog screen enables the purification of the water via a silver-ion channel and minerals within the tank are cleaned out through regular maintenance (Jordan Woods, Woo ds, 2007). The opacity will depend on a number of factors, mainly fog density, the projector, image brightness, and the background. It appears to be a very versatile technology and can be combined with many methods in order to achieve the imagery required, such as pseudo 3D display and mechanisms to allow further interactivity via tracking. The founders of the Fog Screen were intrigued with the prospect of creating an a n image that could float in the air and that people could walk through. They set out to make a projected image float in the air by using different media such as dust, water, fog, and then a mist of tiny water droplets. They then had to iterate their design repeatedly repeatedly to ensure that people would not get g et wet and that the Fog Screen could operate within a broad range of environmental environmental conditions.
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How does fog screen move thing s forward It is important to recognize the uniqueness of Fog Screen technology. It is not the worlds first immaterial screen, but the first immaterial w alk-through alk-through screen. This simple fact is what distinguishes d istinguishes Fog Screen from all other displays (Rakkolainen, 2007). Rakkolainen continues to explain the uniqueness of the technology by mentioning how other displays can create the floating imagery effect but none are penetrable. p enetrable. There are water screens creating huge displays for large audiences but they provide poor image quality. Such large water based displays d isplays are also wet and so impractical for indoors, and walk-through interaction. There have also been earlier technologies closely similar to Fog Screen making use of forgather than water. However, they are typically wet and turbulence affecting such screens seriously reduces the fidelity o f imagery. To reiterate what has been mentioned above, FogScreen creates a non-turbulent non-turbulent airflow of dry fog, cool to the touch. Erdem (2006) mentions in an article on performing arts how this quality means that performers or anyone interacting with the screen for that matter will not be restricted by the fog layer. One can walk freely through
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the layer and th e imagery will not b e dispersed or distorted. Fog Scree n tec hnology not only is uniqu e as a
stand-alon e display. It s qualities, mainly the immaterial nature and walk -through capabilities, allow for very advanced interfa ce design.Olwal and other r esearches (2006 have written that Fog Scree ns dual-sided natur e allows for n ew po ssibilities in multiuser fa ce-to-face collaboration and p seudo-3D
visualization. Images can b e pro jected on both sides of th e scree n
creating a 3D visual eff ec ec t as shown infigur e 2 below.
dual-sided projection allows two (Figure 2, support for dual-sided independent images to be projected on each side, such that a 3D application can render two interactive views for a pseudo3D effect (Olwal et al, 2006) 19 | P a g e
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Olwal has created several pseudo-3D interactive applications, an example being E lastic lastic Surface Denominator . This interactive application allows a user to
stretch and sculpt, as well as to move and rotate a 3D model of a head as shown in Figure 2.Not only on ly has Fog Screen been used with such psuedo-3D displays, it is the centre part of many ongoing efforts towards real volumetric 3D displays. Dr Benzie (2007) in a large survey of 3D displays writes how volumetric displays are in a more advanced stage of development with many already having a profitable market as with Fog Screen. It appears therefore, therefore, that Fog Screen is a vital display for many researches in the world of 3DTV.
APPLICATIONS
y
Fog Screen has been used in live malls, product
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launches, museums, to attract more and more peoples. y
It is used in case of projection a 3D image esp. in
studies. y
It can be used in seminars to make it more
interactive (we can walk through the screen). It can be used in place of air curtain in clubs to make itattractive.Museums, itattractive.Museums, events, trade shows, night clubs, c lubs, casinos, TV shows, and amusement parks are a number of areas where Fog Screen has been put into effective use. One industry where it excels is in advertising. Lugmayr (2007) describes how Fog Screen can be used in conjunction with laser scanner drivers, interactivity and rendering modules, and a flash application. This creates an effective advertisement that entices a user to walkthrough. A user could for example, select a brick wall, or a waterfall via touch, walk through and by doing so see screen afterwards. Viewers tend to remain captivated by such an interactive display as opposed to others. Fog Screens use in trade shows has been b een well received. Nokia, one of many using the Fog Screen products, installed a number of screens to trade show entrances that showed an animation of a character walking and using using the Nokia N okia products. Nightclubs are another area, where the screen literally becomes the entrance into the club provoking the 21 | P a g e
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public to walkthrough. The Box nightclub in Belfast has installed a number of them, providing amazing visuals inside.FogScreen inside.FogScreen can almost be used in any situation. The Fog Screen team also set up each screen to the requirements requirements in order that the effect is as expected wherever it may be used. Its ability to be used throughout so many industries is evidence of Fog Screens significance to y
Multimedia Multimedia and one that looks like it shall continue
(Rakkolainen, 2007). Entertain your gue sts with Fog
Screen Whether you are planning a rock concert, a prize ceremony, ceremony, an anniversary, any commercial or private event, we use the magical Fog Screen. Guests can enter through the screen to an event! y
y
Create a luxuriou s interior with Fog S creen Immersive proje ction technology could use CAVE-like
virtual rooms with fog walls, making them effectivel e ffectively y virtual virtual rooms.
Fog
Screen relevant to mu ltimed ia?
Displays are hugely important to multimedia. All imagery needs
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some way to be displayed, even in its creation. For this reason, there are many technologies out there and as a result many products, with a recent one being the plasma screen. Most however, are purely for display, allowing little interaction. Fog Screen breaks this mould being the first immaterial walk-through screen (Rakkolainen, 2007). The interactive capabilities of Fog Screen products have enabled its success in the world of multimedia and its application can be seen all over the world and in many different industries
A walk through screen
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The Fog Screen devel deve lopers say the uni uni ue nat nature of Fog Screen will w ill make it a memorabl memorable exper ience for cust customers Fog Screen is envi environment ronmentally lly fr iendl endly, as it uses onl only wat water as requi requirement rement and produces chemi chemical cal free fog. Increase product skill and quality of produ cts. y
y
Saf ety for kid s, fun and play time for the kid s. It is Immaterial - y ou could walk through it.
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Increase production skills-technology transfer. -
y
Reduce competition -increase quality of product Enter to new market. (in different market.) y
Increase for workers with an increase in marginal cost Fog Screen is working on new hardware products Fog Screen with specialized capabilities (that is live performances, retail environments, etc.). There are also significant enhancements being made to the interactivity and 3-dimensional imaging capabilities of the screen.
Limitations y
Fog Screen works best indoors with a dark background
that enhances the brightness of the image on the Fog Screen behind the projector. So, it cant be used in day light.
It is presently very much expensive, but the FogScreen.inc is working on providing it in a reasonable price. y
Price is one weakness, with the cost Fog Screen will have to cater for a specialized market, unlikely ever to be used in the normal household or to replace plasma/LCD displays (Watson, 2007). y
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Need 1kW of energy to produce 1m long fog screen. And it is produce 3-5 litres of water in one hour which should be vent. And you can't make a high fog screen, because fog would diffuse with distance.
y
OPPERTUNITIES y
There are endless opportunities to use the products, but
for now these have been mostly innovative i nnovative marketing solutions and different exhibitions. y
Stream of fog can appear and disappear within a
fraction of a second, making it a possibility for use in a live theatre setting to aid with special effects y
Presently it is in demands in countries c ountries like Japan, Japan,
Malaysia, Germany, France, Greece, Russia, the UK and the USA; in recent future it will repla ce the existing method
of projection. y
Developments are being carried out in making
FogScreen a Touch-FogS creen to make it more interactive for the viewer.
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Success of Fog Screen
y
Fog Screen has been successfully used in this
international events: 1. Entertainment (live shows, live concerts, night clubs, stage productions, private parties ie. Disney Enchanted Tour, Eurovision, Harrahs, Cirque de Soleil, MGM Grand, 20th Century Fox) 2. Brand promotions (P&G, Diesel, Victorias Secret. Secret. Bud light/Maxim Tour, Xbox) 3. Trade shows and exhibition events (Nokia, Motorola, Sony, Siemens) 4. Theme parks (Key US theme parks) 5. Museums and Science Centres (Palais de la
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Découvert e, Taiwan National Mu seum)
REFERENCE
http://
.fo
http://
.google.co
s ree
n.co
http:// i ipedi .co
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Hope this will help u!!
Sovan Misra SEND YOUR FEEDBACK ON: Email:
[email protected]
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