Explained – !!! Tech In Cricket !!! ‘UDRS’ : Snickometer | Hot Spot (Infra-red imaging system) | Hawk Eye


The Umpire Decision Review System (abbreviated as UDRS or DRS) is a technology-based system used in the sport of cricket. The system was first introduced in Test cricket, for the sole purpose of reviewing controversial decisions made by the on-field umpires as to whether or not a batsman had been dismissed.

The ICC initially made the DRS mandatory in all international matches,but later made its use optional, whereby the system would only be used if both teams agree.

The system was first tested in an India v Sri Lanka game in 2008

The system was officially launched by the International Cricket Council (ICC) on 24 November 2009 during the first Test match between New Zealand and Pakistan.


A Snickometer, commonly known as Snicko, is used in televising cricket to graphically analyse sound and video, and show whether a fine noise, or snick, occurs as ball passes bat.

When a ball impact or touches the bat or pad of a player , snickometer detect the small sound of impact through the microphone used in that direction.

In the cricket matches you also view the graphical data of snickometer. You can easily understand the cricket technology of snickometer through the given pic


Hot Spot (Infra-red imaging system)

Hot Spot is an infra-red imaging system used in cricket to determine whether the ball has struck the batsman, bat or pad. Hot Spot requires two infra-red cameras on opposite sides of the ground above the field of play that are continuously recording an image. Any suspected snick or bat/pad event can be verified by examining the infrared image, which usually shows a bright spot where contact friction from the ball has elevated the local temperature. Where referrals to an off-field third umpire are permitted, the technology is used to enhance the on-field umpire’s decision-making accuracy

It is also known as Hot spot cricket technology.The average success rate for the hot spot is found to be 95 percent. Firstly, infrared imaging system were used in Border-Gavaskar series in 2011–12 for viewers of the world. See the given pic for infra red imaging system




Hawk-Eye is a complex computer system used officially in numerous sports such as cricket, tennis, Gaelic football, badminton, hurling, Rugby Union, association football and volleyball, to visually track the trajectory of the ball and display a record of its statistically most likely path as a moving image.

It is a ball tracking cricket technology, now used in all cricket matches as IPL, Cricket world cup etc. Hawk eye technology plots the trajectory of a bowling delivery that has been interrupted by the batsman.Hawk eye technology also determine that the bowl hit the wicket or not.

Hawk-Eye was developed in the United Kingdom by Paul Hawkins. The system was originally implemented in 2001 for television purposes in cricket. The system works via six (sometimes seven) high-performance cameras, normally positioned on the underside of the stadium roof, which track the ball from different angles. The video from the six cameras is then triangulated and combined to create a three-dimensional representation of the trajectory of the ball. Hawk-Eye is not infallible and is accurate to within 5 millimeters (0.19 inch) but is generally trusted as an impartial second opinion in sports.



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