I have neither read nor heard any details about how it is going to be implemented; my points below are just my own speculation. It does not necessarily have to be a challenge system, a discreet information to the umpire or service judge should be sufficient. Yes, but a service judge faulting unnecessarily would be very rare, especially if they get the current value or a binary signal whether the value is over 1.15m. Also, one can objectively evaluate service judges later, which should increase service judging quality. I am confident though that it is quite high already and if anything, service judges call too few faults, not too many. Very unlikely, as that would run contrary to the spirit of ITTO §5.9.1.4 - players should not be able to interrupt a rally. If players can challenge, and if players can challenge missed calls, then probably only after the rally is over.
With the proper system I think the service judge should not be calling service height violations, let the technology do it. Could be instantaneous and definitive.
There's already Hawkeye for the lines but yet line judges make the calls... Sent from my SM-G965W using Tapatalk
Yes, the height restriction itself is a move forward. It's only the methods in measuring it that are in question
...or an immediate audible signal the players can also hear. but they would be interrupting a rally with a very high risk of losing a point. it would be included in the 2 challenge per game limit.
Sounds like people accept the service height rule now. There is no going back. Despite discussions on 'accuracy' of measuring the height, just having those two black lines next to the service judge has markedly decreased the number of arguments on 'legal height of serve' on the international scene. I think that's a good thing for the game and us spectators.
I saw one of them, and I didn't agree with it. Looked like a fine serve to me. He only served it from the height of the band of his shorts, he's not that bloody tall.
All in all I think the ultimate question is : HOW CAN YOU BE SURE IF IT IS THE MOMENT WHEN THE SHUTTLE IS HIT ? This is the challenge for both human and machines.
Machines are extremely precise; I remember someone making a device that pressed a button within 1/1000th of a second as a light passed it, just to try and cheat at an arcade game.
But we are not going to measure the time difference like the instant of starting gun triggers and the instant of the sprinter leave the starting blocks. What we need is a machine which can tell us that is the instant when the shuttle is hit. Since the shutttle is not connected to a timing machine like the starting gun in the track and field games, how can a machine tell us this is the moment the shuttle is hit?
Light detection and motion algorithms. You'd be really surprised. We're living in a world where cars are starting to drive themselves.
Yeah, I brought up RFID, but really, it can be any technology that is accurate. Sure, if there is a technology that uses wavelength and is accurate, then they should use it. If there is such a technology that they could use, I hope they do. Because it will remove human error and the inconsistency that comes with it.
If Hawkeye can instantly call in or out, let Hawkeye do it. The line judges don't add any value at this point, except to introduce human error. Are the line judges still there because Hawkeye can't make an instant call? Or can Hawkeye make an instant call but it costs BWF more money if they use Hawkeye more so that's why line judges are still there, to keep costs down?
I'm working for a company that develops and produces 2D and 3D camera based sensors for object and motion detection. And let me tell you that you are highly overestimating the current technological state of the art when it comes to real-time evaluation of such complex scenes as a badminton serve or even a whole match. There are two major issues to solve: 1) exact position recognition and tracking of the shuttle 2) exact trigger of when the shuttle is hit The first one might be solveable in case HawkEye or anything similar will come up with a real-time analysis feature at some point in time (so far, it's not capable of that afaik). The second one is a damn complex task. For example if you want to go by sound, there are several issues and questions coming up immediately: Where to position the microphones (sound has a certain runtime before it even reaches the mic)? How to prevent crossover signals between several courts? How to securely detect the actual hitting sound in all the noise that is going on during a badminton match? Even a comparably simple task of detecting if the ball has crossed the goal line in soccer matches has proven to be not that easy (http://www.dailymail.co.uk/wires/ap/article-5195321/Problems-goal-line-technology-French-league.html). In that case it seems as if the personel operating the system a lot of times had to trigger obvious goals manually since the system wasn't able to cope with the setting in the stadium and hence produced false triggers.
exactly that is why, better to have some solution that is cheap, but let the decision still be decided by a line judge. With right observation equipments to help the serve judge; any well trained serve judge could make the right decision. At least until the tech catches up. the idea from BWF is already good, but it is still kinda ambiguous.
One easy solution.. is to actually install a camera with the visor that the judges already use, let the judge see the live feed from the camera rather than the visor itself. The you can do it with two units of go pro or something.. camera won't move, and the judges that are too tall or short, won't have to crouch down... you can even have the 'live feed' to be slowed down a bit, so the judge could see correctly the point of contact.
