# Re: Technological aspects of the review system

I guess you could formulate a model which ignores gravity too. Do you
get where I'm coming from?

I see what you are getting at. But try to think of it this way , say
you have a source and a sink, and you are trying to measure the
current flowing thru it, by sampling it at certain intervals. Now
surely the current flowing thru it depends on the source and the sink
only, but then you cant estimate that too accurately, so you bite the
bullet and try to estimate the current using your measurements.

I'm not saying that you couldn't come up with a pretty good
approximation. I'm saying that the model results in the certainty of
at least some error - and with pundits exploring it as a zero-error
option, not even knowing what that margin of error is is an issue, no?

In my limited knowledge of how this hawk eye thing works, I cant say
for sure if you can give a finite bound to the accuracy. in my
previous post I stated that I make the assumption that there are fixed
cameras tracking the ball...this is not entirely a valid assumption,
you could easily obstruct the view of those. So if you rely on
cameraman manually tracking the ball, you end up with a far more
difficult problem. i.e. what is the speed of the camera itself?
On Aug 6, 12:31 am, M...@xxxxxxxxxxxxxx wrote:
On Aug 6, 3:48 am, mr3...@xxxxxxxxx wrote:

You're assuming, falsely, that the movement of the ball in any one "X"
direction is predictable based on just the trajectory of the ball
prior to it's arrival at a point in the "Y" plane

If you formulate a model, which ignores
the dynamics of the ball itself

I guess you could formulate a model which ignores gravity too.  Do you
get where I'm coming from?

I'm not saying that you couldn't come up with a pretty good
approximation.  I'm saying that the model results in the certainty of
at least some error - and with pundits exploring it as a zero-error
option, not even knowing what that margin of error is is an issue, no?

Moby

.

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• Re: Technological aspects of the review system
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