Quote:
Originally Posted by getbak
It's not that simple.
For one thing, the puck is a cylinder, not a sphere, so they would need some way to determine the orientation of the puck. If the puck is flat, the centre of the puck needs to be 1.5 inches behind the goal line to be a goal, but if it's on its edge, it only needs to be half an inch behind the goal line to be a good goal.
The system would also need to track the precise movements of a puck travelling upwards of 100 mph.
A system like FoxTrax or this new system doesn't need to be that precise. It just needs to know that the puck went from point A to point B in a certain period of time and if it's off by a foot, it's still going to be good enough for the general information the teams and league would use it for.
An automated goal judging system would need to know if the puck went 2.99 inches past the goal line or 3.01 inches.
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This, plus the issue of whether the puck crossed is a pretty rare one, and it's even rarer to have it not settled pretty quickly on video. Lots of cost incurred to solve an almost non-existent problem (mind you, it would have been handy in spring 2004).
Then you'd have the problem of red lights going on (and maybe horns etc) whenever a puck crosses after a whistle.