Most liked posts in thread: VAR

How can he? The technology is supposed to be accurate, more accurate than the human eye, he'd be a complete fool to overrule it.

 

If only they'd had a camera looking along the goal line.

 

When you look at that image you can see how the camera's used for the technology could have been blocked.

 

How is it nonsense, It's offside. It wouldn't have been last season but players and teams bitched about the handball rule so to make that fairer it was made so most of your upper arm isn't now a handball if it hits it. That means the player can score with that part of the arm so that part of the arm being offside is an offside.

Offside is the ONLY place VAR actually works as its the only place it gives a definitive answer. Without it you could aks 100 refs and you wouldn't get a consensus because it then comes down to personal opinion

 

Something you need to remember is they aren’t using just a single camera. They use multiple camera and I believe from things I’ve read in some technical papers the software used translates where they place the lines on one camera with all the others (which requires a mathematical algorithm because the camera positions create a false perspective which skews where we think players are actually located compared to where they actually are) so they can actually make a decision even if players block line of sight.

They just only generally give us a view of a so single angle that generally gives the best view to try and simplify it, instead of giving us 10 angles all of which to the human eye will suggest a player is on or off by different amounts

 

See this is where you are wrong. For VAR offsides they use a total of 9 cameras. The main one and then 4 at each end




As highlighted in my image that's the main camera that is situated around the halfway line. One of either side of the pitch looking down the 18-yard box and two behind the goal. They are all used in conjunction (And yes the behind the goal ones do serve a purpose)

These cameras are specially calibrated for each stadium as slight changes in the position impact it. These are checked before every game. It also takes the pitched into account as they aren't actually flat for drainage reasons so they 3d scan it and the camber is taken into account. The algorithm also takes into account the height of each part of a players body. You will often see situations where it looks like a players head is furthest forward but the offside system is measured from the knee or the boot despite looking further back, its another of the optical illusions that happen with the camera positions and has to be accounted for. It's a massively complex setup to ensure accuracy but it is as accurate as it can be and more accurate than a person can be.

The only place it has some issues is the camera frame rate. They record in 50 frames a second, while that's higher than even High Frame Rate movies generally film in (which is usually 48 frames a second) for this use going even higher would be good, something north of 100fps, perhaps the 120fps cameras that Ang Lee has been using in his movies recently (Such as in the Will Smith Movie Gemini Man). The reason being that the higher the frame rate the easier it is to get that exact moment of contact, it's not massively a problem normally but on some of the highest calls if the contact happens between frames you can get a difference based on if you go with the frame before the contact or the frame after, 100 or 120 frames would make getting as close to the exact moment much easier as you have more frames to choose from

 

Yesterday's VAR controversy is nothing compared to todays.

VAR is supposed to stop mistakes like today and yet, because of the technology, they couldn't use common sense and see he was clearly onside.