A #Cricket match is going on. Therefore, all the supporters of each team are getting excited, and the game is becoming competitive. Cricket is a game where a small margin determines win or lose. A lot of money is currently invested in the game and a large number of fans are waiting for their team to see a favourable outcome. Consequently, not only the obligation of players to win and play without errors but also the quality of decisions taken by umpires have become critically important factors.
Nevertheless, umpires are still human. Naturally, when they take decisions, there can be mistakes. Many modern technical utilities have been used to help umpires make the right decision. One of those technologies is #Hawkeye #technology. Hawk-Eye is a computer vision device used to visually monitor the trajectory of the ball and view a profile of its statistically most probable direction as a moving picture in various sports such as cricket, soccer, Gaelic football, badminton, hurling, rugby union, association football and volleyball.
Shot Spot is considered the onscreen reflection of the trajectory effects. Paul Hawkins developed the Sony-owned Hawk-Eye system in the United Kingdom. The device was initially developed for television purposes in cricket in 2001. The system operates via six (sometimes seven) high-performance cameras, usually mounted on the underside of the stadium roof, which monitor the ball from various locations.
Working
Using #visual images and timing data provided by a variety of high-speed video cameras positioned at various positions and angles across the field of play, all Hawk-Eye systems are based on triangulation concepts. There are ten cameras for tennis. The video feeds from the cameras and ball tracker are quickly processed by the machine. A data store contains a predefined playing area model and provides information about the rules of the game.
The system identifies the group of pixels in each frame sent from each camera that corresponds to the image of the ball. It then determines the position of the ball for each frame by comparing its position at the same moment in time on at least two physically different cameras. A succession of frames sets up a record of the direction the ball has passed along. It also "predicts" the ball's future flight path and where it will connect with some of the features of the playing area already programmed into the database.
These experiences may also be interpreted by the machine to assess violations of the rules of the game. A schematic picture of the ball trajectory and playing area is created by the device, which ensures that information can be given in near real-time to judges, television viewers or coaching staff. To extract and evaluate patterns and statistics about individual teams, games, ball-to-ball comparisons, etc., the monitoring system is combined with a back-end database and archiving capabilities.
Hawkeye innovations
The device was developed by #engineers at Roke Manor Research Limited, then a Siemens subsidiary in Romsey, England, in 2001. Paul Hawkins and David Sherry filed their license at the United Kingdom but withdrew their application. All of the technology and intellectual property was spun off into a separate Winchester, Hampshire, based Hawk-Eye Innovations Ltd company.
A group of investors, led by the Wisden Consortium and including Mark Getty, a member of the rich American family and business dynasty, acquired the company on 14 June 2006. The acquisition was intended to strengthen the role of Wisden in cricket and encourage him to participate in tennis and other #international sports, with Hawk-Eye working to introduce a basketball scheme. The machine generates far more data than that seen on television, according to Hawk-Eye's website. It was sold as a full company to Japanese electronic giant Sony in March 2011 and placed up for sale in September 2010.
Advantages of Hawkeye technology
Hawk-Eye lets umpires and game referees make crucial decisions that may potentially prove to be decisions that change the game. In terms of outcomes, Hawk-Eye technology helps to ensure more precision.
Disadvantages of Hawkeye technology
There's a 3.6 mm error margin in tennis. Some would argue that the margin of error is too high and the technology of the Hawk-Eye should be much more precise. Hawk-Eye does fail, on occasion. There is often a claim that the beauty of sport is being diluted with computerised technology involved.
Doubts about this technology
For sports lovers around the world, Hawk-Eye is now familiar with the views it gives for sports such as cricket and tennis. While this new technology has been adopted, for the most part, it has received criticism from some quarters. In the 2007 Wimbledon Championships, Hawk-Eye called a shot that seemed to be out by 1 mm, a gap less than the advertised error margin of 3.6 mm.
The 3.6 mm statistical margin of error of the method has been criticised by some critics as too high. Others noted that while 3.6 mm is remarkably accurate, this margin of error is only for the trajectory of the ball that has been observed. In 2008, several of these doubts were consolidated by an article in a peer-reviewed journal. The authors accepted the importance of the method but noted that, to some degree, it was possibly fallible and that its inability to portray a margin of error.
Conclusion:
When deciding whether a ball in the has crossed the line completely or not, the application of goal-line technology enforces full precision. This is more precise than the human eye's reliance and more powerful than video replay. Though hawk eye technology has some small errors in predicting. It is one of the greatest advancement for making decisions on the field. This technology has high features. For football now Hawk eye technology is under development. Also, hawkeye technology is used in some computer games.
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Learn Electronics India has done justice to the concept of Hawkeye technology with this well-crafted blog. I'm amazed at how they've covered the technical aspects without making it overwhelming. This blog has earned a permanent spot in my bookmarks.
Brilliant explanation! Thanks, LearnElectronics India!