Interesting to see the NRL are looking at technology for offside and forward pass decisions.
Thoughts?
https://www.nrl.com/news/2019/07/29/...and-next-year/
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Interesting to see the NRL are looking at technology for offside and forward pass decisions.
Thoughts?
https://www.nrl.com/news/2019/07/29/...and-next-year/
Sent from my SM-G960F using Tapatalk
Would be difficult for forward passes as a pass that ultimately travels forward is often completely fine in rugby league
How would they decide on it's initial path out of the hands?
My Dad to this day reckons Sky got rid of the high camera because it was showing refs up on the offside and forward pass. Good idea for me though, and would probably suit us more than most.
We'd have had about 50 penalties on Saturday.
Can't see how SL would be able to afford it in reality.
Unless you had it at ALL games it's another system changing the rules for 'Televised' games.
I'm not convinced we need it. If it slows down the game, brings in more doubt it's just adding to arguments
It could be done and reasonably simply. First of all the velocity, acceleration etc of players is already known from the device they wear inside their shirts. You could put microchips inside the ball with receivers in the posts, crossbar and even on every 10 metre line. It would then be a case of developing the algorithm and software to make the decision over 99% corect.
Technology is still developing at an almost exponential rate.
Video doctor appointments locally will be available very soon and your mobile devices will relay such things as blood pressure, temperature, heart rate etc etc to the doctor. Picture definition will increase, the possibilities are infinite.
just to illustrate, back in the mid 1970's I'd just done my last exam for the year in analogue and digital techniques, and I went out for a few beers with some friends. I told them then that within 20 years people would have computers at home. They looked at me incredulously and basically told me I was ••••••ed (I was) and it was stupid, wouldn't happen.
Lokl where we are now with technology and we've only just begun.
Whilst I agree that it might be feasible to do my concern would be the cost . Isn’t cost the reason why we don’t have video refs at every game ? For me we need to have video refs at all super league games because in my opinion televised games are refereed slightly differently . Would the game need to be televised to use the Hawkeye system ? Genuine question btw .
Not sure if you would need all that, just use the GPS in the ball relative to the GPS on the back of the shirt, bring the datum together and work out the angle from the ball leaving the hand after 0.5 secs, but I'm not sure if we have GPS signals that are so accurate to within centimetres. The long forward direction ball brings in a lot errors in momentum + wind speed if we use GPS grid lines on the pitch.
If you can track the ball then you know its velocity. When a pass is made, the velocity of the ball changes (ie an acceleration occurs). Analysis of the acceleration vector, ie the forward component negative or positive can determine a forward pass. This is a simple calculation of the numeric data are available. Simple as that, provided the ball can be tracked at all times.
I don't think GPS is accurate enough for these purposes. Hawkeye relies on visual and/or radar tracking I think). I would have thought that some kind of RF tagging along with scanners might be the way forward but I don't know the range. Each player could have a tag and so could the ball and that would be easy. Tagging the ball itself would require more than one tag so the centre of the call could be calculated to allow for spin etc.
So if a pass goes backwards deceleration occurs, so it's fine. If it's a flat pass presumably neither acceleration or deceleration occur, also fine. If it's a forward pass acceleration occurs and it's not fine
Do external factors such as wind not have an impact? If I throw a flat pass and it's over a distance where the wind takes it forward would that not show as acceleration of the ball?
It won't be long before commentators are making big things out of the speed the ball was going at when one player makes a long pass to another just more dribble out of their mouths
Christ I never knew that lump on the players back could tell whether they had wind or not.
On the Back foot looking for the front one.
I think the forward pass is based on the instantaneous acceleration of the ball as it is passed, so if it is blown forward by the wind it is legal.
"BB]Ball is blown or bounces forward [/B]If the ball is passed correctly but bounces forward or is blown forward by the wind, there is no infringement and play should continue. (Extract from rules).
To me, this would have to be done in conjunction with TV footage because as a player runs the ball often moves backwards or forwards relative to the player because of the motion of his arms, that is: the ball is almost constantly accelerating or decelerating. To determine a forward pass, you would probably have to replay the footage along with the numbers, so if you stop at the frame where the pass occurs you can then determine if it was forward or not. It is a different argument as to whether or not it is worth the effort.
The idea of being able to detect offside at the PTB is, to me, are more exciting prospect. Let's face it, the sport needs to be rid the negative tactics that certain teams employ in order to slow down the game, and it seems that referees need some kind of assistance in this aspect of the game. 'Hawkeye' offside would force a correct 10m defensive line but would also then allow the referee more effectively to police the ruck. This should result in a faster, more attractive spectacle.
Agree! I am sure to keep the game going referees have been told to ignore a lot at the play the ball, my pet hate is players who keep looking backwards at the referee to tell them to get off at the play the ball, also how the player marking often keeps his hand on the tackled players head? Players must be told or coached to do this, okay at first we would have a lot more penalties, but perhaps coaches would tell players then to stop! We need to get rid of the third player coming in when the tackle is virtually completed! TV games now we seem to only have two referees?
Here's a mad idea. Maybe we could have somebody running along the sidelines, possibly with a flag, who would be in a better position to see a forward pass and help the ref.......
I bought a pack of luminous condoms last week. The wife's face lit up.