UNIT 1

Introduction to Virtual Reality

 What is Virtual Reality (VR)?

• Virtual Reality (VR) is a computer-generated

environment with scenes and objects that
appear to be real, making the user feel they
are occupied in their surroundings.
• Virtual reality is a simulated 3D environment
that enables users to explore and interact with
a virtual surrounding in a way that
approximates reality, as it is perceived through
the users' senses
• The environment is created with computer
hardware and software, although users might
also need to wear devices such as helmets or
goggles to interact with the environment
 Chronological order of VR

• Sensorama (1962)
• Ultimate Display (1965)
• Air Force Flight Simulator (1966)
• Artificial Reality(1983)
• Naming Virtual Reality (1984)
• Virtuality (1991)
• Giant Market (2016)
 Need for Virtual reality

• What is the Need for Virtual Reality?

Virtual reality allows users to create simulated,
interactive, and specifically designed environments
for specific use.
• It is designed for human interaction or for a
specific reason to create experiences.
Unlike other reality technologies like AR and MR, VR
enhances the user experience to the next level with
its fully immersive and interactive technology.
 How Does Virtual Reality Technology
Work?
• The VR process combines
hardware and software to
create immersive
experiences that “fool”
the eye and brain.
• Hardware supports
sensory stimulation and
simulation such as
sounds, touch, smell or
heat intensity, while
software creates the
rendered virtual
environment.
How Does Virtual Reality Technology
Work?
The VR process combines hardware and
software to create immersive experiences that
“fool” the eye and brain.
Hardware supports sensory stimulation and
simulation such as sounds, touch, smell or heat
intensity, while software creates the rendered
virtual environment.
 VR Accessories

1.VR Covers
• Sweating may cause skin
discomfort if you use your
VR headset for an
extended time. In such
instances, VR coverings
can be a terrific way to
protect your skin when
playing high-intensity
games like Population
One, Beat Saber, or FitXR.
2. VR Gloves
• One of the benefits of VR
gloves is that they create
a genuine physical feel,
making the experience
more engaging and
lifelike.
• Although a few VR gloves
are on the market, most
are aimed at businesses.
However, there are a few
that customers may
utilise.
3. VR Lenses
• They protect the lens of
your headset from small
scratches and fingerprints
while also filtering out
harmful light to alleviate
eye strain. The lens guard
is simple to instal. For a
secure fit, place the VR
lens over each of your VR
headset lenses.
4. Motion Controllers
These add-ons enable users to interact with mixed
reality. Because controllers have a specific position in
space, they enable fine-grained interaction with
digital objects.
5. Omnidirectional Treadmills (ODTs)
This auxiliary equipment allows users to move
physically in any direction. ODTs allow users to move
freely in VR surroundings, providing a completely
immersive experience.
 Types of VR systems

1. NON-IMMERSIVE VIRTUAL REALITY

• Non-immersive virtual reality systems

rely on a computer or video game
console, display, and input devices like
keyboards, mice, and controller.
• Non-immersive virtual reality is a
computer-based virtual experience in
which you can control some characters
or activities within the software.
• Still, the environment does not interact
with you directly.
• For example, A video game is a great
example of a non-immersive VR
experience
2. SEMI-IMMERSIVE VIRTUAL REALITY
• Semi-immersive virtual
experiences provide users with
a partially virtual environment.
• It will still give users the
perception of being in a
different reality when they
focus on the digital image, but
also allows users to remain
connected to their physical
surroundings.
• A semi-immersive virtual
reality experience combines
fully immersive and non-
immersive virtual reality.
 FULLY IMMERSIVE VIRTUAL REALITY

• Fully-immersive simulations
give users the most realistic
simulation experience,
complete with sight and
sound.
• To experience and interact
with fully-immersive virtual
reality, the user needs the
proper VR glasses or a head
mount display (HMD).
• VR headsets provide high-
resolution content with a
wide field of view.
• Unlike non-immersive virtual reality, fully immersive
virtual reality guarantees a realistic experience within the
virtual environment.
• It will give you the impression that you are in that virtual
environment and that everything is happening to you in
real-time.
• This is a costly virtual reality type requiring helmets,
gloves, and body connections equipped with sense
detectors. These are linked to a high-powered computer.
• This type of VR has been commonly adapted for gaming
and other entertainment purposes, but usage in other
sectors, namely education, is increasing now as well. The
possibilities for VR usage are endless.
 Applications of Virtual Reality

• 1. VR creates
opportunities to
conduct activities
virtually, for example
creating virtual tours or
field trips towards
education.
2. Virtual reality has a
huge influence on the
Healthcare industry for
pain reduction in adults.
Mental, social therapy as
well as other behavioural
concepts likes attention-
shifting, awareness, and
deep relaxation is used in
this system to help in
decreasing chronic pain.
• 3. In entertainment,
Realtime experience of
imaginary characters or
movies, animations,
and motions can be
experienced by all using
VR.
• 4. Prototyping helps the
automotive industry
avoid multiple designs
and reduce resources
by creating virtual
designs using VR.
• 5. In terms of Defense,
VR helps our brave men
experience the
battlefield
environments in real-
time to avoid
unconditional situations
in Reality.
6. Architecture: Using VR, architects can not only imagine
what they’re building but understand how it feels as
well. This allows them to experience the space before it is
built and make real-time changes to deliver customer
satisfaction.

7. Digital Marketing :While most people don’t like

commercials, experiencing the use of a product close-up
can actually be an entertaining and enlightening
experience. There are a variety of applications of VR in
digital marketing.
• For example, retailers can show potential customers
how a product will look in their home. Or nonprofits
can create more empathetic messaging for political
issues.

8. Tourism: Try a holiday before you buy it. No, seriously.

One pointed virtual reality application is tourism.
You can go on guided virtual tours of hotels, landmarks,
restaurants, and whatever else you may want to visit on
your next vacation. And then when you do go, you know
you won't be disappointed.
 Features of VR

1. The Virtual World

• A place of the imagination
that exists apart from
reality. Of course, the
medium employed to
construct this area is a
simulation comprised of
visual components
generated with computer
graphics. The creator's rules
establish the relationships
and interactions between
these pieces.
2. Immersion
• The users are put in a
virtual area that is
physically separated from
the actual world. VR
headsets do this by filling
the entire field of view,
whilst headphones
accomplish the same
outcomes with sounds,
immersing users in
another universe.
3. Sensory Input
• VR headsets track users'
location inside a specific
environment, allowing the
computer to depict changes in
position.
• Users who move their heads
or bodies will feel they are
moving in the virtual
environment.
• The input is as near to reality
as possible; to move around,
users do not touch a button
but rather move about.
4. Interactivity
• Simulated worlds must
have virtual
components with which
to interact, such as
picking up and dropping
items, swinging swords
to kill goblins, smashing
mugs, and pressing
buttons on planes.
 Virtual Reality Examples

• Since there are different

kinds of virtual reality
that offer different
experiences, it has been
used in many different
fields.
• Here are some
examples of how virtual
reality is used in various
fields.
1. Training
• Non-immersive virtual
reality is commonly used in
training programs, such as
medical and aviation
training, to provide students
with a safe and controlled
environment to learn how
to handle different
situations. This type of VR is
also used in simulation and
gaming, where users can
interact with different
characters and objects.
2.Education
• When virtual reality is
used in education, it
creates immersive
learning environments
where students can
explore a wide range of
subjects and ideas. For
example, virtual reality
may be used to recreate
historical events,
scientific ideas, and a
great deal more.
3. Entertainment
• Virtual reality is often
used in the gaming
industry, where people
can get lost in a virtual
world and interact with
different objects and
characters. It can also be
used for cinematic
experiences, giving users
a new level of immersion
and engagement.
4.Real Estate and Tourism
• Semi-immersive VR is
used in architecture,
design, real estate,
tourism, and other fields.
For instance, it can create
a virtual tour of a building
or a city that users can
navigate through to
experience the location
without physically being
there.
5.Collaborative Work
• Collaborative VR is used
in various fields, such as
education, gaming, and
training. For instance,
students can collaborate
and learn in a virtual
environment, and
businesses can hold
virtual meetings with
their team members from
different locations.
•