Wireless Vision, a technology used to track people behind the wall.

1. BUNDELKHAND INSTITUTE OF
ENGINEERING AND TECHNOLOGY
A Seminar Report on:
WI-VI
(Wireless Vision)
Submitted By:
Simran Gupta
(1504313026)
Submitted To:
Department of Information Technology

2. WHAT IS WI-VI?

3. Wi-Vi is one of the most
modern technology which
modifies the Wi-Fi technology
to make the concept of
wireless vision possible.
 The main logic or idea is the
tracking and manipulation of
reflected Wi-Fi signals.
 It can hence be called as an
adaption of sonar and radar.

4. INTRODUCTION
As said Wi-Vi abbreviates
wireless vision.
Mainly used to capture the
moving objects behind an
obstruction
Device uses typically wi-fi
hardware.

5. WHAT CAN WI-VI DO?
 Detect the number of moving
humans in a closed room.
 Determine the relative
locations of moving humans.
 Identify simple gestures from
behind a wall.

6. KEY IDEA

7. HOW DOES WI-VI
WORK?

8. Wi-vi uses two transmitting
antennas and a single receiver.
 Transmitting signals are low
power wi-fi signals.
The two antennas transmit
almost identical signals, except
the second antenna’s signal is
the inverse of the first, resulting
in interference.

9. MOVEMENTS REGISTERED BY THE WI-VI

10. BLOBS FORMATION BY WI-VI

11. CHALLENGES FOR WI-
VI

12. FLASH EFFECT
A huge When you take a device, point
it at a wall, and transmit Wi-Fi signals,
amount of reflection is going to come
from the wall itself.

13. TRACKING HUMAN MOVEMENT:
When we get reflections from behind the wall ,we
will get reflections from everything in the
environment: the chairs ,tables , and so on. How
can we tease out the person’s reflections from all of
these reflections? And once we do that, how can
we track a person based on these reflections.

14. METHOD USED TO OVERCOME THE
CHALLENGES:
Idea: transmit two waves that cancel
each other when they reflect off static
objects but not moving objects wall is
static disappears people tend
detectable to move.

17. ADVANTAGES:
 Wi-vi require same bandwidth & operates in
the same range as wi-fi.
 Wi-vi can perform through wall imaging
without access to any device on the other
side of the wall.
 Wi-vi employs signals whose wavelength
are 12.5 cm.
 Extend human vision beyond the visible
electromagnetic range, allowing us to detect
objects in the dark or in smoke.

18. LIMITATIONS:
 Display has very low resolution.
 We cannot detect humans behind
concrete walls thicker than 8” .
 To achieve a narrow beam the
human needs to move by about
about 50 cm.

19. CONCLUSION
Wi-Vi or wireless vision technology is
the simplest evolution for
communicating.
 Rather than RADARS and old
measures, it can be afforded simply
and cheaply.

20. Hence in most ways, it makes a sense
that Wi-Vi technology is one further
step in the fields of electronics and has
the most scope of improvements and
applications an far considered…

21. THANK YOU…