Augmented reality enhances the real world with virtual objects overlaid on top of it, allowing users to remain present in the real world. Virtual reality fully immerses users in a simulated world and controls their senses. Both are challenging as augmented reality must accurately combine real and virtual elements while virtual reality aims to create engaging immersive virtual environments.

4. Augmented Reality vs. Virtual Reality
Augmented Reality
• System augments the
real world scene
• User maintains a sense
of presence in real
world
• Needs a mechanism to
combine virtual and
real worlds
• Hard to register real
and virtual
Virtual Reality
• Totally immersive
environment
• Senses are under
control of system
• Need a mechanism to
feed virtual world to
user
• Hard to make VR world
interesting

5. Identify Real-World Object or Place
Display extra information.
Information can be Simple Text,2D/3D Object, Animated
Object, Touchable / clickable objected..

7. Monitor Based Augmented Reality
• Simplest available
• Treat laptop/PDA/cell phone as a window through
which you can see AR world.
• Sunglasses demo

13. Confucius says:
I hear and I forget
I see and I remember
I do and I understand