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English Premier League 2021/22 Season


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Just now, The Master said:

His shirt sleeve. 

That is a very loose interpretation of the T-Shirt line. But the main problem is actually that it seems like they extended the line down from his arm until it was offisde.

There is no way to tell where exactly his arm is. BUT for that line to be right he needs to be both stretching his arm forward but also much closer to the camera than his knee.

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1 minute ago, Jim McLean's Ghost said:

That is a very loose interpretation of the T-Shirt line. But the main problem is actually that it seems like they extended the line down from his arm until it was offisde.

The technology makes that impossible. The line can only be extended to the level of the pitch. 

1 minute ago, Jim McLean's Ghost said:

There is no way to tell where exactly his arm is. BUT for that line to be right he needs to be both stretching his arm forward but also much closer to the camera than his knee.

You he see that he’s leaning. That will put your shoulder further forward than your knee. 

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1 minute ago, The Master said:

The technology makes that impossible. The line can only be extended to the level of the pitch. 

You he see that he’s leaning. That will put your shoulder further forward than your knee. 

You know they can draw the line to pretty much where ever they want. It is a picture, the pitch is not a physical barrier..

Kane.thumb.png.a293138e8b5106a11434ad93693e280f.png

There is line that shows Kane onside. It has about the same amount of accuracy as the one that called him off. Why do they even pretend they can call offside to the level of precision they do. It was a close call, go with the decision on the park.

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Just now, Jim McLean's Ghost said:

You know they can draw the line to pretty much where ever they want. It is a picture, the pitch is not a physical barrier..

VAR for offside is more than just a picture. It uses a 3D model of the pitch constructed using Hawk Eye. 

If there was no mechanism to stop the vertical lines at pitch level, VAR would be pretty much useless. 

Just now, Jim McLean's Ghost said:

Kane.thumb.png.a293138e8b5106a11434ad93693e280f.png

There is line that shows Kane onside. It has about the same amount of accuracy as the one that called him off. Why do they even pretend they can call offside to the level of precision they do. It was a close call, go with the decision on the park.

Your line doesn’t account for parallax, nor can you categorically say that it’s directly below his shirt sleeve.

VAR does and can respectively.

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1 minute ago, The Master said:

VAR for offside is more than just a picture. It uses a 3D model of the pitch constructed using Hawk Eye. 

If there was no mechanism to stop the vertical lines at pitch level, VAR would be pretty much useless. 

Your line doesn’t account for parallax, nor can you categorically say that it’s directly below his shirt sleeve.

VAR does and can respectively.

VAR doesn't account for parallax since it is done with one camera with one lens.

Yes there is no mechanism to stop vertical lines at pitch level then it is useless. Players's feet are obviously stopped at pitch level but trying to draw lines from an arm or a knee is just guessing.

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Just now, Jim McLean's Ghost said:

VAR doesn't account for parallax since it is done with one camera with one lens.

No it’s not. 

It uses a calibrated 3D model of the pitch which absolutely does account for parallax. 

Just now, Jim McLean's Ghost said:

Yes there is no mechanism to stop vertical lines at pitch level then it is useless. Players's feet are obviously stopped at pitch level but trying to draw lines from an arm or a knee is just guessing.

You really should just give up now. 

The VAR drawing the lines doesn’t just fire up Paint and start scribbling. It’s all based on a calibrated model of the pitch which allows them to draw accurate parallel lines, and accurately determine where an “off ground feature” is relative to the ground. 

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3 minutes ago, Jim McLean's Ghost said:

Does it have a 3D model of the players? No. so it doesn't account for parallax for anything above the pitch

It doesn’t need a 3D model of the players. The relevant feature is essentially a single point placed in the 3D space, which is then used to draw the relevant line. 

Edited by The Master
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12 minutes ago, The Master said:

VAR for offside is more than just a picture. It uses a 3D model of the pitch constructed using Hawk Eye. 

You sure about that? First Ive ever heard about 3D imaging and use of Hawk Eye.

Is it not just a replay with the screen paused on the frame they think the balls been played?

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1 minute ago, Jacky1990 said:

You sure about that? First Ive ever heard about 3D imaging and use of Hawk Eye.

Is it not just a replay with the screen paused on the frame they think the balls been played?

It’s explained here - https://www.premierleague.com/news/1488423

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