1. 3D
Stereoscopy
by
Davide Marco
Mantovani Porcaro
14-15 November 2012
Flemish Ministry of Education HQ, Brussels

2. Terms and Concepts

3. Binocular Vision /bɪˈnɒkjʊlə ˈvɪʒ(ə)n/
noun
Vision using two eyes with overlapping
fields of view, allowing good perception
of depth.
Definition: Oxford Dictionaries

4. Stereoscopic /ˌstɛrɪə(ʊ)ˈskɒpɪk/
adjective
Relating to or denoting a process by which
two photographs of the same object taken
at slightly different angles are viewed
together, creating an impression of depth
and solidity.
Definition: Oxford Dictionaries

5. Sir Charles Wheatstone
Stereoscope (1838)

6. Sir Charles Wheatstone
Stereoscope (1838)

7. Stereo base
The physical distance between the
objectives of the two cameras.

9. Binocular Vision

10. Stereoscopy
Binocular Vision

11. the outcome is
The stereoscopy is and must be the simulation
of the human binocular vision to lead to a
convincing effect of depth.

12. The Starting Point

13. How it works

14. How we work
How it works

15. How we work
How it works

16. Terms and Concepts
take 2

17. Convergence /kənˈvərjəns/
Definition of Converge
verb
Things that come together from different
directions so as eventually to meet.
Definition: Oxford Dictionaries

18. Convergence /kənˈvərjəns/

19. Convergence /kənˈvərjəns/
No convergence means (generally) no 3D effect

20. Binocular fusion

21. Binocular fusion
What our
L R
eyes see
What our
fusion
brain does

22. Binocular fusion

23. Binocular fusion
The background is completely overlapped

24. Binocular fusion
This means that
screen
The background is completely overlapped
Top view

25. Binocular fusion
This means that
screen
Top view
The background is not affected by depth effect
while the objects seem to pop out the screen.

26. Binocular fusion and Parallax
screen
Top view

27. Binocular fusion and Parallax
Positive
space
screen
Negative
space
Top view

28. Parallax /'parəlaks/
noun
The effect whereby the position or
direction of an object appears to differ
when viewed from different positions.
Definition: Oxford Dictionaries

29. Our 3D solution
- (Almost) Zero budget
- Easy to build
- Materials are easy to find

30. How it works
- The distance between the two objectives is
virtually equal to 6,5 cm (2.5 inches), similar
to the distance between our eyes.
- The convergence can be easily adjusted as
desired.
- Dimensions are small when compared with
those of a professional rig.

31. Materials (and costs)
- N°1 40x20cm wooden board (2€)
- N°2 20x20cm wooden boards (2€)
- N°2 mirrors (free samples)
- N°2 supports for the mirrors (7€)
- N°2 wooden supports for the cameras (free)
- screws and various components (2€)
Total cost: less then 15€

32. Why you should use it
- With a cheap system like our 3D rig, you
could use two reflex cameras (and all their
quality) to shoot 3D videos in FullHD
resolution.
- The convergence can be setted from the
infinite to a really close point (nearly 20 cm),
depending on what are you shooting.
- You can easily buy the materials and build it
using only a screwdriver.

33. Side-by-side tests

34. Early tests using mirrors

35. The project

36. Left and right photos

37. Finished rig

38. Thanks