"Challenge Hawkeye" means: when a player has objections to a referee's penalty (whether the ball goes out of bounds), he or she can apply to play back the actual path of the ball simulated by the Hawkeye computer system to determine whether the penalty was awarded. correct. When players need to challenge Hawkeye, they must declare a "challenge" to the referee.
Hawkeye, formally known as "Instant Replay System", is a computer system used in tennis and other sports to track the path of a ball and display a graphical image of the recorded actual path, and can also predict it The future path of the ball. In tennis, the Hawk-Eye system has become part of the officiating process. The Hawkeye system was developed in 2001 by engineers at Roke Manor Research Ltd. in Ramsey, Hampshire, UK. The patent is held by doctors Paul Hawkins and David Sherry.
This system connects several high-speed cameras distributed around the stadium with a computer system. It first uses the computer to divide the three-dimensional space of the competition venue into measurement units in millimeters, and then uses high-speed cameras to The camera captures the basic data of the ball's flight trajectory from different angles at the same time. The computer then uses the data to generate a three-dimensional image. Finally, the large screen displays the ball's flight path and landing point.
If a player believes that a certain ball has landed in or out of bounds during the game, he or she can immediately apply for the use of "Eagle Eye" technology for a ruling. Once a player makes such an application, the replay footage provided by "Eagle Eye" will appear on the live TV screen and the on-site display at the same time, allowing players, referees, on-site spectators and TV viewers watching the live broadcast to clearly see where the ball landed. Whether the point is in or out of bounds.
In August 2006, the US Open took the lead in using Hawkeye in Grand Slam events, followed closely by the Australian Open. Only the French Open, which was played on a clay court in June, did not use the "Eagle Eye" and does not plan to use it in the future, because the mark left by the ball when it fell on the soft red soil was clearly visible.
For people in the tennis industry, the introduction of Hawkeye technology into on-site tennis penalty judgments is a significant innovation, comparable to the introduction of the tie-break system 36 years ago. Four-time Grand Slam winner and American star Courier, who is responsible for reviewing the use of this technology, said: "This is a very big improvement for a sport that rarely changes its traditions."
Rules for the use of Hawkeye:
1. The use of Hawkeye is subject to the arrangements of the competition organizing committee. The organizing committee has the right to install and use the eagle eye, or not to use it;
2. The organizing committee uses the eagle eye to assist the referee and must announce it before the game;
3.08 4 Starting from March, each player will have three chances to challenge Hawkeye in each set. If it reaches a tie-break, one more chance can be added. Before April 2008, there were 2 times per set. If it entered a tie-break, it could be increased once.
4. The rules for players to use Hawkeye to assist in making penalty decisions are:
If you stop hitting the ball during a live ball, you can request to use Hawkeye. If the opponent is penalized for a mistake, the point is won. Otherwise, points will be lost; after the referee makes the penalty, if you are dissatisfied with the penalty, you can ask to use Eagle Eye. If the referee makes a mistake in making a penalty, the point will be won, otherwise the original decision will be upheld.
In addition to tennis, "Eagle Eye" assistance has also been introduced in badminton, table tennis, volleyball and other sports.