Technologies- Hawk eye

Hawk-Eye is a computer system used in cricket, tennis to visually track the path of the ball and display a record of its actual path as graphic image. In tennis, it is now part of the adjudication process used by umpires during referrals. It is used as a part of referals in cricket of late..
It has the ability to predict the future path of a ball. England, Australia, India, South Africa, West Indies, Pakistan, Sri Lanka are the nations were Hawk-Eye has been implemented... The technology was also in place at the ICC Champions Trophy in 2006 and the 2007 World Cup in the West Indies. The technology is used by broadcasters to resolve LBW shouts and show whether a batsman should have been given ‘not-out’ or ‘out’: the technology predicts the path of the ball as it comes out of the bounce, thus determining whether the ball would have hit the stumps...

Assessing LBWs

• Would the ball have hit the stumps?
• Did the ball pitch in-line?
• Did the ball hit the batsman in-line?

Wagon Wheels

The singles, 2s, 3s, 4s and 6s that make up quick-fire 50s or vital centuries are represented by the different colours on the Wagon Wheel, which shows the areas of the field that the batsman has been targeting.Nowadays, the grounds do look realistic and resemble the actual ground..

Spin / Swing

Hawk-Eye also demonstrates how far a delivery has deviated after pitching.Actual delivery and a delivery to show if the ball had not spun or deviated is showed.

 

 

Pitch Maps

Pitch maps show where the bowler has pitched the ball.. How good the bowler was in a spell or how good he was to a right handed or left-handed batsmen can be analyzed..
Beehives show where the ball has passed the batsman.

Ball Speeds and bounce

Ball speeds is shown, where a top delivery is compared with a slow ball to show how slow the ball has been bowled. Also, it can be used to check the bounce the actual ball compared to what if the ball had normal bounce..

Still the experts are of the view that Hawk Eye may not be able to predict the ball coming out from the rough on a 5th day wicket and from the cracks on the wickets.. It cannot be used as a supplement to umpiring decisions in LBWs because you may end up giving more 'out' than 'not-out' with the hawk eye showing that the ball may have kissed the leg-stump or just clipped the bails.. This was in trial in the champions trophy in Sri-Lanka if i am not wrong.. Created havoc by breaking the flow of the game and disrupting the innings.. (Don't tell it to Modi, he may slip in a couple of ads in that time)..