HAWK EYE

HAWK EYE

Both cricket and tennis indeed make use of the same hawk-eye system that looks at the trajectory of the ball.Initially hawk-eye was used to track the movement and flight path of missiles, it was though soon realized that it could be used to track any independently moving projectile.Dr Paul Hawkins and his colleagues sought to adapt the military version of hawk-eye to one that could be used in sports, and in particular cricket.

All hawk-eye systems are based on the principles of triangulation.It uses the visual images and timing data provided by at least six high-speed video cameras located at different locations and angles around the area of play.In each frame sent from each camera, the system identifies the group of pixels which corresponds to the image of the ball.It then calculates for each frame the 3d position of the ball by comparing its position on at least 2 of the physically separate cameras at the same instant in time.A succession of frames builds up a record of the path along which the ball has traveled.It can also predict, using the laws of physics, the future flight path of the ball and where it will interact with any of the playing area features already programmed into the database.The system generates a graphic image of the ball path and playing area which means that information can be provided to judges, television viewers or coaching staff in near real time.The pure tracking system is combined with a backend database and archiving capabilities so that it is possible to extract and analyze trends and statistics about individual players, games or ball to ball comparisons etc.

APPLICATION OF HAWK EYE

• Determining LBW decisions
• Showing spectacular sixes
• BEE HIVE
• Split Screen Technology
• Pulshing Ball
• Improved Pitch Map
• Ball speed variation Screen
• Judging Reaction Time
• Wagon Wheel