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Thread: Channel 9 finally bow to benchmark00 pressure

  1. #151
    Request Your Custom Title Now! Flem274*'s Avatar
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    small earthquake just after the ball passed the bat imo.
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  2. #152
    International Debutant ganeshran's Avatar
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    Just use the pitch map to check for balls pitched outside leg stump and very clear visible deflections that can be seen by the naked eye. DRS should be used only to prevent obvious howlers, not marginal calls.
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    Global Moderator Spark's Avatar
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    I don't understand people's obsession over doubting the "validity" of the predictive path, especially over questions of height. It's simple physics ffs, you could give it to a high school student as a problem and they'd get the right answer, assuming that you've got the point of impact and the ball's velocity about right.
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  4. #154
    Cricket Web Staff Member Burgey's Avatar
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    Quote Originally Posted by benchmark00 View Post
    What? The mark wasn't an edge noise, it was beyond the bat when the noise was made. So what are you saying? It was just a **** decision.

    Good try though, obv still reeling from false positivegate last match.
    I read the other day the umpires had been briefed on real time snicko to expect the noises to show up slightly after the ball passes the edge. I dunnot if that's right or not and really don't give a ****. What it tells you though is benchmark00 Limited should have invested in delayed noise graphics, which are now going gang busters.
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    Quote Originally Posted by Spark View Post
    I don't understand people's obsession over doubting the "validity" of the predictive path, especially over questions of height. It's simple physics ffs, you could give it to a high school student as a problem and they'd get the right answer, assuming that you've got the point of impact and the ball's velocity about right.
    i posted this in the match thread after the fact, but there was one that i think watson left, and it missed the off stump by a bees dick. the hawkeye of that delivery had the ball missing off stump by a couple of centimetres, and that wasn't even a prediction, it should have been purely ball tracking. would love to see/show a reverse angle of the actual vs the hawkeye.
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  6. #156
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    Quote Originally Posted by Spark View Post
    I don't understand people's obsession over doubting the "validity" of the predictive path, especially over questions of height. It's simple physics ffs, you could give it to a high school student as a problem and they'd get the right answer, assuming that you've got the point of impact and the ball's velocity about right.
    How does that take into consideration potential dip and swing though?
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    First Class Debutant wiff's Avatar
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    Quote Originally Posted by benchmark00 View Post
    How does that take into consideration potential dip and swing though?
    Magnus effect incalculable IMHO

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    International Debutant ganeshran's Avatar
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    Quote Originally Posted by Spark View Post
    I don't understand people's obsession over doubting the "validity" of the predictive path, especially over questions of height. It's simple physics ffs, you could give it to a high school student as a problem and they'd get the right answer, assuming that you've got the point of impact and the ball's velocity about right.
    It is not that simple. You have to account for lateral movement in the air and movement off the pitch. Those become tricky because the prediction change depending on when the ball hit the pad after pitching.

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    Global Moderator Spark's Avatar
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    Quote Originally Posted by benchmark00 View Post
    How does that take into consideration potential dip and swing though?
    I'm pretty sure the laws of the game mean the umpires should assume that the ball goes "straight on" after impact ie. no unusual swing or dip.

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    Hall of Fame Member Marcuss's Avatar
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    Quote Originally Posted by Spark View Post
    I'm pretty sure the laws of the game mean the umpires should assume that the ball goes "straight on" after impact ie. no unusual swing or dip.
    That's for balls which impact on the full
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  11. #161
    Cricket Web: All-Time Legend andyc's Avatar
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    Quote Originally Posted by Spark View Post
    I'm pretty sure the laws of the game mean the umpires should assume that the ball goes "straight on" after impact ie. no unusual swing or dip.
    Pretty sure it's just that the umpires don't assume the ball is going to do anything it hasn't done yet, ie. if you get hit on the toe by what looks like a ripping legbreak, the umpire assumes it won't spin even though it probably would've.

    Don't think that's what benchmark was really asking TBF, more just how does the system take into account something unexpected, say some late swing right before impact.
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    Quote Originally Posted by andyc View Post
    Don't think that's what benchmark was really asking TBF, more just how does the system take into account something unexpected, say some late swing right before impact.
    Yeah that's how I interpreted it.
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    State Vice-Captain Meridio's Avatar
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    Would imagine that the predicted path is based on the rate of change of position of the ball at the point closest to impact, not just a simple method of taking the release, bounce and impact positions and extrapolating it by treating the ball as a projectile. So your Hawkeye cameras (there's about 10 setup around a ground IIRC) record the delivery, and for each camera frame (I think they're 500 fps cameras) the system plots the position of the ball in relation to a fixed point (say the stumps) by comparing the measurements from the different cameras. This gives you an x, y, z position for the ball at each frame, you then have an algorithm that works out the change in x, y, z from frame to frame (and probably also the change in the rate of change) and extrapolates that from the frame you have closest to the point of impact. That way, you're taking any late movement into account.

    I remember giving this quite a lot of thought a few months ago, actually applied for a job with Hawkeye. Got nowhere though, useless ****s didn't even respond to my application.

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