Three dimensional displays create the illusion of depth by presenting offset images to each eye. Stereoscopy refers to the technique of using two slightly different images to create this 3D effect. There are two main types of 3D displays - active 3D requires powered glasses while passive 3D uses polarized filters. Active 3D provides better image quality but passive 3D glasses are lighter and cheaper. Volumetric displays can actually create 3D images without glasses. Auto-stereoscopic displays also don't require glasses by using lenses or barriers to direct different pixels to each eye. 3D is now being applied to movies, TVs, gaming, and upcoming mobile phones as the technology advances.

1. TechnologyPresented by
Lahiru diyamantha
The open university of Sri Lanka
Nawala
Nugegoda

2. What is 3D
Three D a movie with images having three dimensional from
or appearance
Our physical environment is three dimensional and we view
the world in a 3D way every day.Human have two eyes which
are about 2 inches apart so we are able to perceive the spatial
relationship between the things just by looking at them.

3. Introduction
 A 3D display is a screen that shows a three dimensional
picture.
 A 3D picture makes for a more interesting and real viewing
experience.
 In the past few years we have seen quick advances, and the
TV, movie and gaming industries are betting heavily on 3D
content.

5. The basic definition of 3D space
stays the same
 Everything about the X, Y, and Z-axis still holds true, but
there's one catch. While real world 3D
objects physically exist in three dimensions, in the digital
world of computer graphics 3D objects can only be
representedmathematically.

6. How 3D Image is Created?
 Stereoscopy refers to a technique for creating or enhancing
the illusion of depth in an image by presenting two offset
images separately to the left and right eye of the viewer. Both
of these 2-D offset images are then combined in the brain to
give the perception of 3-D depth.

7. Stereoscopy

8. Active 3D and Passive 3D
 Active 3D
 Active 3D could also be called powered 3D, because it
requires that the glasses used be powered somehow.
 Early models used standard AA or AAA batteries, but the
newest ones use rechargeable cells that draw power from
special cradles, or even from a computer’s USB port when
plugged into it.

9. Active 3D and Passive 3D
 Passive 3D
 Passive displays have a special filter that works with the
polarized lenses in the glasses. Your left eye only sees the
odd lines and your right eye only sees the even lines. Without
the glasses, the screen looks normal.
 Passive 3D is a lot like how it worked with those old blue and
red lens type of glasses from the 1950s, only the modern
ones work with full color images

10. Comparing Active and Passive 3D
Glasses
weight Heavy Low
weight
Image
quality
Very good
quality
Average
provides
Price High Low cost

11. Volumetric displays: Real 3D
Images
 The most straightforward way to create a 3D display, is to
actually creating it in 3D. These are called Volumetric
displays, and scientists are working on all sorts of way to
create them, which usually involves lasers and rotating or
vibrating mirrors

12. Auto-Stereoscopic Display
 Auto-Stereoscopic displays display different pixels to each
eye, using optics (lenses or barriers) to direct the correct
pixels to each eye. The nice part is that you don't need to
wear any glasses to experience the 3D image!

13. Auto-Stereoscopic Display

14. What’s on the Market?
 3D Movies
 3D Televisions
 3D Gaming
 3D Mobile Phones

15. 3D Televisions
 During 2009, many companies have started to talk about 3D
TVs, and today most of the companies have already
announced future models. These companies include Sony,
Samsung, LG, Toshiba, Panasonic and LG. Most of these
TVs will be high-end models, usually LED-based LCDs.

16. Future of 3D TVs
 Sony 3D TV, 3D games expected to boost sales of such
televisions. This is the second year of 3-D TV availability for
consumers in the market. 3-D sets are currently owned by
about 1 million consumers
 It is estimated that within two years the prices of 3D TV sets
will decline and will become a common electronic device in
every home.

17. 3D Mobiles
.
 3D is a new big thing now. Year 2010 was more towards
pushing 3D televisions into consumer's houses and now
2011 and 2012 is all about 3D smart phones.
 3D mobile phones are not available in the market but it is
soon going to change. Companies like Samsung, LG, Sharp
are on the verge of launching 3D mobiles phones in the
market

18. Future 3D Mobile Phones
 Proposed design for Sharp 3D phone that is to come around
next year. It also goes head to head with the other
companies like Samsung that will also provide 3D mobiles at
the same period.

19. Thank You