4. VR is a Computer Generated artificial environment that allows a user to
view and explore.
5. • Two miniature display screens that produce the stereo scopic images
• An optical position tracking system that tracks the orientation of the humans head in the Virtual
world.
The Head mounted display consists of:
Head Mounted Display or HMD
6. VIRTUAL ENVIRONMENTS
BEGINNING WITH FLIGHT SIMULATORS, ADVANCING THROUGH SCIENTIFIC APPLICATIONS, AND INTO
THE ENTERTAINMENT ARENA, VIRTUAL ENVIRONMENTS HAVE BEEN DEVELOPED TO PROVIDE AN
IMMERSIVE SIMULATED EXPERIENCE WITHOUT THE EXPENSE AND RISK ASSOCIATED WITH THE REAL
THING.
BOEING
787
FLIGHT
SIMULATO
R FROM
ALTEON
MOLECULAR
SIMULATION AT
ARGONNE
NATIONAL
LABORATORY
MATTEL POWER GLOVE, VECTREX
3D IMAGER, AND NINTENDO
7. DIGITAL 3D ADVANCES IN DIGITAL PHOTOGRAPHY AND STEREOSCOPY HAVE
ENABLED FILMMAKERS TO AFFORDABLY PRODUCE 3D FILMS AND
THEATRE OWNERS TO AFFORDABLY SHOW THEM.
A 3D DIGITAL CAMERA RECORDS
VIDEO, CIRCULARLY POLARIZING THE
RIGHT VIEWPOINT USING RIGHT-
HANDED POLARIZATION...
...WHILE RECORDING THE LEFT
VIEWPOINT USING LEFT-HANDED
CIRCULAR POLARIZATION.
BOTH IMAGES ARE PROJECTED
SIMULTANEOUSLY ONTO THE THEATRE
SCREEN, IN A MANNER THAT
GUARANTEES THAT THE VIEWPOINTS
ARE SYNCHRONIZED.
THE MOVIEGOER WEARS POLARIZED
GLASSES THAT ONLY ALLOW THE RIGHT-
HANDED POLARIZED IMAGES TO PASS
THROUGH THE RIGHT LENS AND THE LEFT-
HANDED POLARIZED IMAGES TO PASS
THROUGH THE LEFT LENS.
8. VERGENCE VS. ACCOMMODATION
PROJECTING A 3D IMAGE ONTO A 2D
SCREEN OR TELEVISION DISPLAY
TENDS TO PLAY TRICKS WITH ONE’S
VISUAL PERCEPTION.
IN THE REAL WORLD, WHEN A PERSON
TRIES TO FOCUS ON A DISTANT OBJECT,
THE EYES EXPERIENCE VERGENCE, WHERE
THEY BOTH ROTATE ON THEIR OWN
VERTICAL AXES UNTIL THEY BOTH POINT
AT THE OBJECT.MEANWHILE, THE EYES EXPERIENCE
ACCOMMODATION, WHERE THEY
REFLEXIVELY FOCUS ON THE OBJECT IN
ITS DISTANT POSITION, CAUSING
NEARBY OBJECTS TO GO OUT OF
FOCUS.WITH 3D IMAGES, HOWEVER, THE EYES
ROTATE SO THEY ARE POINTED TO
WHERE THE OBJECT SEEMS TO BE, BUT
THE REFLEXIVE FOCUS MUST ADJUST TO
THE SCREEN’S ACTUAL LOCATION,
ELIMINATING THE NATURAL BLURRING
THIS RESULTS IN
SERIOUS EYESTRAIN
AND HEADACHES FOR
MANY 3D AUDIENCE
9. SIMULATOR SICKNESS
EFFORTS TO MAKE VR
SIMULATIONS AS
REALISTIC AS POSSIBLE
FREQUENTLY HAVE
UNPLEASANT SIDE
EFFECTS.FOR EXAMPLE, PROVIDING
A VISUAL HEADBOB (LIKE
THE ONE ILLUSTRATED AT
RIGHT), WITHOUT AN
ACCOMPANYING PHYSICAL
MOTION, CAN RESULT IN
MOTION SICKNESS AND
NAUSEA.
SIMILAR PROBLEMS TEND TO OCCUR
WITH RAPID CHANGES IN ACCELERATION
AND RAPID SHIFTS IN PERSPECTIVE.
10. BALANCE & THE INNER EAR
THE SEMICIRCULAR
CANALS WITHIN THE
INNER EAR CONTAIN HAIR
CELLS THAT REACT TO
BODY MOVEMENTS.
THESE REACTIONS ARE
TRANSMITTED BY MEANS
OF THE VESTIBULAR
NERVE TO THE BRAIN,
WHICH SUBCONSCIOUSLY
SENDS MESSAGES TO
THE BODY’S TRUNK AND
LIMBS TO MAINTAIN
WHEN THE EYES SEND THE BRAIN A
DIFFERENT MESSAGE REGARDING THE
BODY’S MOVEMENTS, THE BRAIN MAY
11. WHEN THE VR SYSTEM’S
PROCESSING TIME IS
EXCESSIVE, ITS REACTIONS TO
THE USER’S ACTIONS WILL LAG
BEHIND, WHICH DESTROYS THE
ILLUSION OF IMMERSION WHEN
IT BECOMES NOTICEABLE TO
THE USER. LATENCY IS
PARTICULARLY
PROBLEMATIC IN
“AUGMENTED
REALITY”
APPLICATIONS,
WHERE VIRTUAL
OBJECTS ARE
OVERLAID ON THE
USER’S REAL
WORLD SETTING,
VR LATENCY
12. Head-Mounted Display
(Coated in white markers)
Camera
(Tracks markers to record
user’s head position)
Head Straps
Circuit Board
Screen
Diopter Adjustment
(Rotate to fine tune so
eyeglasses aren’t
needed)
Lenses
(Three pairs are
provided to
accommodate
good, moderate,
and heavy
nearsightedness)
Foam Padding
(Fits to face)
OCULUS RIFT
13. Oculus has been acquired by Facebook. $ 2,000,000,000
Mark Zuckerberg - March 25,
2014
25. Cardboard Begins
• designed by Google
• no official manufacture
• was part of a Google 20% project
• simple and inexpensive device
• Open Source Pattern
since Google I/O 2014
26. 1 million units of the cardboard has been used all over the world.
28. Minimum size: 8.75in (22cm) by 22in (56cm), and 0.06in (1.5mm) thickness.
1- Ordinary Cardboard
29. Two Asymmetric-BiConvex optical lenses.
With 45mm focal distance.
Biconvex lenses work best because they prevent distortion around the edges.
2- Two Lenses
30. One neodymium ring magnet and one ceramic disk magnet
2- Magnet (Optional)
31. Custom Cardboard and DIY at Home
DIY Instructions Can get in Google Cardboard site
36. Cardboard 2015 (+iOS +6inch)
It supports the iOS and 6 inch sizes.
Support for screens up to 6 inches
37. Cardboard app (Android/iOS)
When the smartphone in a vertical it is reset.
• The cardboard app comes with 7 experiences:
• Earth: Fly where your fancy takes you on Google Earth.
• Tour Guide: Visit Versailles with a local guide.
• YouTube: Watch popular YouTube videos on a massive screen.
• Exhibit: Examine cultural artifacts from every angle.
• Photo Sphere: Look around the photo spheres you’ve captured.
• Street View: Drive through Paris on a summer day.
• Windy Day: Follow the story (and the hat) in this interactive
animated short from Spotlight Stories.
Earth
Home
Exhibit
42. VR Jam 2015
$1,000,000
VR Jam 2015
1789 people are registered for this challenge
https://vrjam.challengepost.com/submissions
https://vrjam.challengepost.com
43. Games and architecture, and there are a variety of apps,
such as works of art. It is a treasure trove of ideas
44. Cardboard SDK
• for Android
https://developers.google.com/cardboard/android/
• for Unity
Unity 4.5 pro / Unity 5 (free)
Individual developers, small
company you can use for free.
Features:
1. Lens distortion correction.
2. Head tracking.
3. 3D calibration.
4. Side-by-side rendering.
5. Stereo geometry configuration.
6. User input event handling.
49. UI Depth & Eye Strain (Oculus case)
It becomes difficult to see, even if too far away or too close.
This is the same as the stereoscopic movie subtitles.