The science behind 3D

1. Stereoscopy
(The Science Behind 3D)
By: Pradatta Adhikary
Pathikrit Modak
Subhashis Pal
Avishek Das
Avijit Sarkar

2. What is Stereoscopy ?
 Stereoscopy (also called stereoscopic or 3-D
imaging) 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.

3. Binocular Vision

4. Binocular Vision

5. Stereoscopy Vs. Normal Image
 Ina normal image both of our
eye sees the same picture
 But in a stereoscopic Image our
two eyes sees two slightly
different images, and that’s
how illusion of three-dimensional
depth is created.

6. Stereoscope of Early Age

7. Modern 3D Technology
 Modern 3D technology is divided into several
procedure :
 With lenses:
 Anaglyphic 3D (with passive red-cyan lenses)
 Polarization 3D (with passive polarized lenses)
 Alternate-frame sequencing (with active shutter
lenses)
 Head-mounted display (with a separate display
positioned in front of each eye, and lenses used
primarily to relax eye focus)
 Without lenses: Auto stereoscopic displays,
sometimes referred to commercially as Auto 3D.

8. Anaglyph
Disadvantage
 Color depth is absent due to colored filter glass.

9. Polarization 3D
 Used in modern 3D Movie theater.

10. Alternate-frame sequencing

11. Head-mounted display

12. Auto Stereoscopy
 Used in Glassless 3D device like 3D
Tab, 3D Mobile, Gaming Devices etc.

13. 3D Gaming
 Now games are also available in Stereoscopy
 Every High performing graphic card is capable
Converting any games into 3D
 A “3D Graphic kit” Required for that reason

14. 3D Graphic Kit

15. 3D Conversion

16. YouTube 3D
• Now with the growing
popularity of Stereoscopy
YouTube Also stated 3D video
channels

17. 3D Television
 Not only movie, now we can enjoy
television program also in 3D.
 There are many television channels who
telecast their program both in 3D & 2D.

18. Stereoscopic Camera
 Unlikenormal camera stereoscopic camera
uses two lenses representing each of our
eyes.

19. Sample 3D Photograph

20. Future
 Need or not of 3D?
 Doesn´t add "not that much" of value to a film.
 New trends in Electronics market
 New 3D revival
 YouTube 3D Channel
 “After Toy Story, there were 10 really bad CG movies because
everybody thought the success of that film was CG and not
great characters that were beautifully designed and heart-
warming. Now, you've got people quickly converting movies
from 2D to 3D, which is not what we did. They're expecting the
same result, when in fact they will probably work against the
adoption of 3D because they'll be putting out an inferior
product. ” —James Cameron

21. Thank you