Hawk-Eye Technology

By: Tanner Torres
First invented by Dr. Paul Hawkins in 2001.
Extremely complex computer system
Costs around $20,000-$25,000 per court for
one week
Hawk-Eye is not featured at over 60 events
across the ATP, WTA , and ITF tours
10 high-speed cameras at different angles
and positions around the court
Creates a 3D trajectory of the path of the ball
Uses the 3D trajectory to determine the exact
touch area the ball made with the court when
it bounced
Exact bounce mark is determined and shown
via virtual software
Using the triangulation of images from
cameras players can see exactly whether the
ball was in or out
Only a 3.6 mm margin of error
“The ball's moving so fast these days that
sometimes it's impossible for anyone to see,
even a trained official. With instant replay we
can take advantage of technology and
eliminate human error. Having just a few
challenges will make it both fun and dramatic
for fans at the same time.”
Each player is allowed 3 unsuccessful
challenges per set
If the set reaches a tie-breaker, each player is
awarded 1 extra challenge
If the player’s challenge is unsuccessful, then
the player loses that challenge.
Can measure speed of the ball at any point
during a rally
Service patterns, length ran during rally,
service comparisons, and percentage of time
a player spends in different regions of court
The History of Hawk-Eye
System was developed by Dr. Paul Hawkins
Hawk-Eye tested by the ITF and passed for professional use
The Nasdaq-100 Open in Miami was the first tennis tour event to use Hawk-Eye
The U.S. Open becomes the first grand-slam tournament to implement the Hawk-Eye challenge
The Australian Open and Wimbledon Championships also adopt the Hawk-Eye System
Announced uniform set of rules: 3 incorrect challenges per set plus one extra in the event of a
Hawk-Eye is now featured at over 60 events across the ATP, WTA, and ITF tours.
BBC. "Hawk-Eye Challenge Rules Unified." BBC News. BBC, 19 Mar.
2008. Web. 11 Nov. 2012.
Hawk-Eye Innovations Ltd. "Tennis." Hawk-Eye Innovations. Hawk-Eye
Innovations Ltd., n.d. Web. 11 Nov. 2012.
Mullins, Justin. "Hawk-Eye in the Crosshairs at Wimbledon Again." - IEEE
Spectrum. - IEEE Spectrum, June 2008. Web. 11 Nov. 2012.
Topend Sports. "Hawk-Eye Line-calling System." Hawkeye Tennis LineCalling System. Topend Sports, 10 June 2012. Web. 11 Nov.
Tsang, Jason. "Technology in Tennis: Hawk-eye." Jason Tsang's Blog.
Blogger.com, 14 July 2006. Web. 12 Nov. 2012.

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