- Sep 11, 2018
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The umpires call makes no sense to me if it’s hitting the wicket it’s out if not not out
There's even more inaccuracy in the prediction pathway.The inherent inaccuracy in the ball-tracking system. The main one with impact is the fact the ball impacts between frames and there's only so much frame-rate in the ball-tracking cameras (varies from country to country). The "Umpire's call" region takes this inherent inaccuracy into account.
The "umpire's call" region isn't completely accurate to the inaccuracy of the system, e.g. the error bars, but it's more of a zone that's easily understandable to the watcher of the sport (half a ball, top of the stumps, left and right edges of the stumps etc).