13-04-2013, 04:12 PM
HAWK EYE TECHNOLOGY
HAWK EYE.ppt (Size: 733 KB / Downloads: 44)
INTRODUCTION
Hawk-Eye is a computer system used in cricket, tennis and other sports to track the path of the ball.
Six cameras tracks the ball so 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,
so it will tell you exactly how much time the batsman has to react to a ball.
HISTORY
It was developed by engineers at Roke Manor Research Limited in 2001; the patent being held by Paul Hawkins and David Sherry. Later, the technology was spun off into a separate company, Hawk-Eye Innovations Ltd., as a joint venture with television production company Sunset + Vine.
It first hit our screens in 2001 and has been helping to unravel the mysteries of the lbw decision ever since.
HOW IT WORKS
This is essentially visual processing, using cameras, not lasers. There are six calibrated cameras stationed at strategic points around the ground. As a ball is bowled each camera recognises 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.
ACCURACY OF THE TECHNOLOGY
During ITF testing in 2006 Hawk-Eye made the correct call in 100% of all tests, showing an average error of only 3.6mm.
Tests have always been conducted outdoors, encompassing situations that take the following factors into consideration:
Wind (and therefore camera wobble);
Bright sunlight at different times of the day;
Shadows covering part or the majority of the court;
Dark or overcast conditions;
Artifical floodlights.
CONTINUED
Indoor venues are obviously easier in which to track because conditions are far less variable. Quite simply, Hawk-Eye can track accurately and reliable in any conditions, on any surface.
Although the accuracy of the existing system has been tried and tested, the company is constantly trying to develop and refine the system. Hawk-Eye listens to feedback from customers and officials to ensure that Hawk-Eye remains the very best in the market.
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 upto the different councils to decide whether to use this technology or not…….