Hawk-Eye technology uses multiple cameras placed around a court or field to track the motion of a ball in 3D. It was developed in 2001 for cricket to help determine lbw decisions. The cameras record footage at 60 frames per second, which is then analyzed using computer vision algorithms to reconstruct the ball's trajectory based on triangulation. Hawk-Eye has been shown to be highly accurate and is now used in sports like tennis, cricket, and snooker to review or overturn close calls.

1. HAWK EYE TECHNOLOGY
– An overview
By-
Ms. Ankita R. Khadatkar
6-ETB

2. OUTLINE
1. Introduction
2. History
3. How It Works
4. Visual representation
5. Accuracy
6. Applications
7. Further Developments
8. What Players Speak
9. References
10. Conclusion

3. INTRODUCTION
It is a vision processing system that uses the images from
five or six cameras placed around and high above the court
to triangulate the ball's flight and build up a 3D (picture)
of it
The cameras record the action at 60 frames a
second about double the speed of standard
commercial TV.
 Hawk-Eye picks up the exact spot where the ball
pitches. Hawk-Eye also measures the speed of the
ball from the bowler's hand

4. HISTORY
It was developed by engineers at Roke Manor Research
Limited in 2001; the patent being held by Paul Hawkins
and David Sherry
It first hit our screens in 2001 and has been helping
to unravel the mysteries of the lbw decision ever since

5. PRINCIPLE
 Hawk-Eye system is based on the
principle of ”Triangulation”
 Triangulation is the process of
determining the location of a point by
measuring angles to it from known
points at either end of a fixed baseline.

6. WORKING
 This is essentially visual processing, using cameras. There
are six calibrated cameras stationed at strategic points
around the ground. As a ball is bowled each camera
recognizes the ball in the image. A 3D trajectory of the
ball is created from the image data using a process
called Kalman Filtering. From this 3D trajectory, you
can determine the speed, angle and deviation of the
ball's flight.

7. Visual representation of Hawk-eye technology

8. APPLICATIONS
1.It finds its application in different games like
cricket, tennis and snooker.
2.It has also been implemented in computer
games to give reality to the game.
3.It is basically used in cricket for giving L.B.W
decisions.

9. FURTHER DEVELOPMENTS
 Hawk-Eye is already working on implementing a
system for basketball
 The future of hawk-eye technology looks bright as
it has been used in various applications in a very
short duration after its introduction.

10. CONCLUSION
 After all the test that have been conducted on this
technology, it has always come out successful and it promises
to be a boon for the world of sports and now it is up to the
different councils to decide whether to use this technology
or not.
This technology has met the high reality and accuracy
features.
As the system runs in real time ,there is no extra
time required to see the visualizations and
graphics.