Fog screen

1. ANURAG COLLEGE OF ENGINEERING
AUSHAPUR (V),GHATKESAR(M),MEDCHAL,TS-501301
DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING
FOGSCREEN
Under the Guidance of
Mrs. J. SRAVANTHI
Ms. P. Navya - 19PQ1A0563

2. CONTENTS
 ABSTRACT
 INTRODUCTION
 EXISTING SYSTEM
 ALTERED SYSTEM
 ARCHITECTURE
 TECHNOLOGY
 ADVANTAGES
 DISADVANTAGES
 APPLICATIONS
 CONCLUSION
 FUTURE SCOPE
 BIBILOGRAPHY

3. ABSTRACT
 Fog Screen is breakthrough technology that allows projection of high quality images in the air.
 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 doesn’t make you wet even if you stay under the Fog Screen
device for a long time.
 It is a display device which is the application of computer graphics.

4. INTRODUCTION
 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 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 walk-through capability, set Fog Screen apart from other
displays and thus created a seemingly successful market for its products.

5. WHAT IS FOGSCREEN ?
 It is one type of advanced projecting device which consumes water and electricity to form
fogs on which images are projected.
 Tea pot is projected on fog generated by a fog generating device
Fog generating device
Projector

6. EXISTING SYSTEM
 A projection screen is an installation consisting of a surface and a support structure used
for displaying a projected image for the view of an audience.
 Uniformly white or grey screens are used almost exclusively as to avoid any
discoloration to the image.
 Flat or curved screens may be used depending on the optics used to project the image
and the desired geometrical accuracy of the image production
 Popular known screens are:
1. Rigid wall-mounted screens
2. Pull-down screens
3. Electric screens

7. ALTERED SYSTEM
 It is one type of advanced projecting device which consumes water and electricity to
form fogs on which images are projected.
 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.
 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.
 The fog they use is dry, so it doesn’t make you wet even if you stay under the Fog
Screen device for a long time.

8. ARCHITECTURE

9. TECHNOLOGY
 Fog Screen technology is a high-tech version of the technology in a cool air humidifier.
 Tap water is pumped into the fog tank where it is blasted with ultrasound, turning it
instantly into a thick fog made of tiny water particles 2-3 microns in diameter.
 The tank’s internal design plus 3 sets of fans work together to create a very thin wall of
mist about half of an inch 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.

10. FORMATION OF FOG 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.
 Fog Screen creates a “dry” fog by ensuring that the water droplets are in the range of 2-
3 microns in size.
 The fog is made within the device using water and ultrasonic waves.

11. PRINCIPLE OF FOG SCREEN
 After the screen is formed, images
can be projected onto it.
 The screen can be translucent or
fully opaque.

12. FOG SCREEN GENERATION
 Here in two side air flow is given to make a constant flow of fog for the display of
image.
 The fog here we are using are dry and very light.
 If you hold your hands in the fog flow, the fog feels dry and cool, and your hands do not
get wet.

13. FOG SCREEN GENERATION
 The ultrasonic transducer
used to divide the water
into small tiny water
droplets as the fog which
we are using is
completely dry and it is
light.

14. WALK THROUGH SCREEN
 It is not the world’s first immaterial screen, but the first immaterial walk-through
screen.
 FogScreen creates a non-turbulent airflow of dry fog, cool to the touch.
 One can walk freely through the layer and the imagery will not be dispersed or
distorted.
 Fog Screen technology not only is unique as a stand-alone display.

15. WALK THROUGH SCREEN
A person is standing in between the screen and is absolute dry

16. ADVANTAGES
 Safety for kids, fun and play time for the kids. It is Immaterial - you could walk
through it.
 Fog screen is environmentally friendly, as it uses only water as requirement and
producers chemical free fog.
 Increase product skill and quality of products.

17. DISADVANTAGES
 Fog Screen works best indoors with a dark background . So, it can’t be used in day
light.
 It is presently very much expensive.
 Need 1kW of energy to produce 1m long fog screen.
 You can't make a high fog screen, because fog would diffuse with distance.

18. APPLICATIONS
 Fog Screen has been used in live malls, product launches, museums, to attract more and
more peoples.
 It is used in case of projection a 3D image esp. in studies.
 Museums, events, trade shows, night clubs, casinos, TV shows, and amusement parks
are a number of areas where Fog Screen has been put into effective use.
 It can be used in seminars to make it more interactive (we can walk through the screen).

19. CONCLUSION
 It creates a strong visual effect of 3D objects floating in air, even when the image is not
stereoscopic.
 This is a first step in the direction of a truly volumetric walk-through display.
 The implemented system enables one to view 3D objects in mid-air and observe them
from almost any angle.

20. FUTURE SCOPE
 Presently it is demand in countries like Japan, Malaysia, Germany, France, Greece,
Russia, UK and in recent future it will replace the existing method of projection.
 Developments are beings carried out in making Fog Screen a Touch_FogScreen to
make it more interactive for the viewer.

21. BIBILOGRAPHY
 FogScreen, 2005 – 2007. All pages. Available from: http://www.fogscreen.com/en/ [Accessed 2 October
2007].
 I. Rakkolainen, M. Laitinen, M. Piirto, J. Landkammer, K. Palovuori, TheInteractive FogScreen. A
demonstration and associated abstract at ACM SIGGRAPH 2005 Program: Emerging Technologies, Los
Angeles, CA, USA, July 31-August 4, 2005. See also
http://ilab.cs.ucsb.edu/projects/ismo/fogscreen.html.
 Olwal, A., DiVerdi, S., Candussi, N., Rakklainen, I., Hollerer, T., 2006, An Immaterial, Dualsided Display
System with 3D Interaction. Paper presented at the Proceedings of the IEEE Virtual Reality Conference,
2006. Available from:
http://portal.acm.org/citation.cfm?id=1130450 [Accessed 4 November 2007].

22. QUERIES ?

23. THANK YOU