Basic Introduction about Virtual Reality .ppt

Introduction about Virtual Reality

1. Virtual Reality Introduction

3. Virtual Reality
•Powerful technology that promises to change our lives unlike
any other.
•By artificially stimulating our senses, our bodies become
tricked into accepting another version of reality.
•VR is like a waking dream that could take place in a magical
cartoon-like world, or could transport us to another part of
the Earth or universe.
• It is the next step along a path that includes many familiar
media, from paintings to movies to video games. We can
even socialize with people inside of new worlds, which could
be real or artificial.

4. VR initially…
•1990 – Expensive and failed to capture market
•2014
– Smartphone industry, have enabled high-resolution, low-
cost, portable VR headsets to provide compelling VR
experiences
–mobilized leading technology companies to invest billions of
dollars into growing a VR ecosystem that includes art,
communication, entertainment, enhanced work productivity,
and social interaction

5. Other Technologies…
•The greatest need for innovation is in visual
displays that are particularly designed for VR.
•Distinctions with other technologies such as
augmented reality (AR) and mixed reality (MR) are
becoming less signi
ficant as the technology
progresses because they can all be handled by the
same or similar devices.
•New term XR has become popular to represent
this uni
fication;

6. De
finition of VR
•Inducing targeted behavior in an
organism by using artificial sensory
stimulation, while the organism has
little or no awareness of the
interference.

7. 1.Targeted behavior: The organism is having
an “experience” that was designed by the
creator. Examples include flying, walking,
exploring, watching a movie, and socializing
with other organisms.
2. Organism: This could be you, someone else,
or even another life form such as a fruit fly,
cockroach, fish, rodent, or monkey (scientists
have used VR technology on all of these!).

8. 3. Artificial sensory stimulation: Through the power of
engineering, one or more senses of the organism become
co-opted, at least partly, and their ordinary inputs are
replaced or enhanced by artificial stimulation.
4. Awareness: While having the experience, the organism
seems unaware of the interference, thereby being
“fooled” into feeling present in a virtual world. This
unawareness leads to a sense of presence in an altered or
alternative world. It is accepted as being natural.

9. Testing the
Boundaries
Audio, Movie, Paintings,
Book
Fooling the Brain
Our brains may form place cells
for places that are not real!
This is a clear indication that VR
is fooling our brains, at least
partially
We even have grid cells, which fire in
uniformly, spatially distributed
patterns, apparently encoding
location coordinates

10. Perception Engineering

11. Does sensory stimulation depend on actions taken by
the organism…
•The laboratory subject (organism) has a
–first-person experience,
–scientist is a third-person observer.
More than the Reality…
Game ..Person or Cartoon… Experience
Animals, Human
Open Loop (No)
Closed Loop (Yes)

12. Synthetic Vs Captured
•Synthetic
– geometric primitives and simulated physics
•Captured
– viewing on a screen - the video camera has served this purpose for
over a century.
–Capturing panoramic images and videos and then seeing them from
any viewpoint in a VR system is a natural extension
–Depth Sensors, SLAM (Simultaneous Localisation And Mapping) and
3D Representation
–Accurate --- Motion Capture Studio (Explicitly Engineered
Environment)