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TMO's technical inadequacy
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<blockquote data-quote="j&#039;nuh" data-source="post: 696828" data-attributes="member: 55446"><p>I agree with you. The IRB certainly needs to do more to bring in technology to help speed up the TMO process. I get the feeling that a lot of the people who oppose the TMO system on the basis of the length of times that decisions make could be won round if we were to provide the right technology.</p><p></p><p>Tagging wouldn't work in this case IMO. Assuming a standard 60 FPS, and assuming that you know that the grounding occurred within a particular second, then you would have to glance through 60 frames and pinpoint the exact one where ball makes contact with the floor, each frame ~0.017 seconds apart. Deciding whether the ball was grounded in the 25th or 35th frame (~0.17 seconds apart) would probably be a very difficult call. It would be an improvement on the current system, but it would still be error-prone. There are better technologies for this.</p><p></p><p>Hawk-eye could be a great adoption in general by rugby, giving almost instantaneous decisions on when the ball is grounded. The maaaaaaaaassive caveat here, though, is that it is still a camera-technology, so it relies on the cameras being able to pick up the ball. It isn't a problem if a few cameras get blocked for a few frames, but an enormous problem if the ball carrier is crowded by players so that none of the cameras pick up the ball (as is often the case with TMO decisions on grounding). Hawk-eye is a great technology for many sports (and also very viewer friendly) and would be an improvement on nothing in rugby, but I'm not sure it would be the best option for rugby. </p><p></p><p>GoalRef might be a better option. Set a magnetic field around the in-goal area, a couple of mm off the floor (not sure how viable this would be), triggered when the magnet in the ball makes contact with the floor. Cheaper to install than Hawk-eye and much better for the way in which rugby plays. Doesn't give those visuals that you get from Hawk-eye though. GoalRef: <a href="https://www.youtube.com/watch?v=rilUXE5-ido" target="_blank">https://www.youtube.com/watch?v=rilUXE5-ido</a></p><p></p><p>Both GoalRef and Hawk-eye could give us a decision within a second on grounding. Would mean that the TMO would only be needed to check on the passage of play leading up to a try!</p></blockquote><p></p>
[QUOTE="j'nuh, post: 696828, member: 55446"] I agree with you. The IRB certainly needs to do more to bring in technology to help speed up the TMO process. I get the feeling that a lot of the people who oppose the TMO system on the basis of the length of times that decisions make could be won round if we were to provide the right technology. Tagging wouldn't work in this case IMO. Assuming a standard 60 FPS, and assuming that you know that the grounding occurred within a particular second, then you would have to glance through 60 frames and pinpoint the exact one where ball makes contact with the floor, each frame ~0.017 seconds apart. Deciding whether the ball was grounded in the 25th or 35th frame (~0.17 seconds apart) would probably be a very difficult call. It would be an improvement on the current system, but it would still be error-prone. There are better technologies for this. Hawk-eye could be a great adoption in general by rugby, giving almost instantaneous decisions on when the ball is grounded. The maaaaaaaaassive caveat here, though, is that it is still a camera-technology, so it relies on the cameras being able to pick up the ball. It isn't a problem if a few cameras get blocked for a few frames, but an enormous problem if the ball carrier is crowded by players so that none of the cameras pick up the ball (as is often the case with TMO decisions on grounding). Hawk-eye is a great technology for many sports (and also very viewer friendly) and would be an improvement on nothing in rugby, but I'm not sure it would be the best option for rugby. GoalRef might be a better option. Set a magnetic field around the in-goal area, a couple of mm off the floor (not sure how viable this would be), triggered when the magnet in the ball makes contact with the floor. Cheaper to install than Hawk-eye and much better for the way in which rugby plays. Doesn't give those visuals that you get from Hawk-eye though. GoalRef: [URL]https://www.youtube.com/watch?v=rilUXE5-ido[/URL] Both GoalRef and Hawk-eye could give us a decision within a second on grounding. Would mean that the TMO would only be needed to check on the passage of play leading up to a try! [/QUOTE]
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