The present invention is an article and process for determining the site of impact of a movable object on a treated surface, where a tennis ball is treated with a striking composition, and a boundary line region is treated with a receiving composition such that when the striking composition and the receiving composition are in physical contact, a calorimetric indicator is left on the receiving composition to indicate the point of contact.
Hawk-Eye is a complex computer system used in cricket, tennis and other sports to visually track the path of the ball and display a record of its most statistically likely path as a moving image.[1] In some sports, like tennis, it is now part of the adjudication process. It is also used in some instances to predict the future path of a ball in cricket. It was developed by engineers at Roke Manor Research Limited of Romsay, Hampshire in the UK, in 2001. A UK patent was submitted by Dr Paul Hawkins and David Sherry.
United States Patent US7632197
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