Jan 17, 2008 02:47 pm very interesting.
NFL Camera Works
Posted on Jan 17, 2008 02:34 pm
guitar_jim
Czar of Cheese
Member Since: Jun 09, 2004
This has some cool info that I've always wondered about regarding the yellow first down line on the field.
arstechnica.com/articles/culture/firstandten.ars
However, how do they make sure that the football never hits the cables attached to that overhead camera?
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Jan 17, 2008 03:27 pm I just spoke to a couple of my guys here. They are union, and have done work with NFL Films. They told me that the cables are at the very top of Lincoln Financial Field. So, there is no way a football can come in contact with the cable. I know in the one shoot of it in the article, it looks only to be 10' above the players. Found out that is just an optical illusion. It actually is around 75' to a 100' in the air.
Jan 17, 2008 03:34 pm nice nice, i'm going to read this later. i hope there's more info about the camera in there, though i've thought through the yellow line thing and i guess now i'll see if my guess was correct. i've always wondered about these two things.
Jan 17, 2008 04:38 pm all these years I thought the yellow line was an IR beam...
err..well... composted in place over an IR beam...
Jan 17, 2008 08:07 pm i was right only about the way the system avoids coloring over the players. i didn't know they laser-ranged the field. i assumed some guy maybe clicked a point on each side of the field at the appropriate yardline for the ball, and then the line was immediately drawn. i thought there was a human component.
Jan 17, 2008 09:23 pm Ya, the cable cam has been a staple in Formula One racing and FIA for years. A few other forms of racing in the Us as well have been using it for years as well, but it started with the FIA as they needed a way to keep up with cars going well over 200 MPH through sections of the track that were not accessible with regular camera's.
And ya, the yellow line is the best part of football sometimes.
Jan 17, 2008 09:40 pm Noize, speaking of racing, they've been using a similar technology as the football scheme for advertising too.
In some races, the advertisements on the track walls are all added by computer, and there's a technician who watches the recording of the race and calculates how many seconds each advertiser is on the screen for billing purposes. I also believe the same scheme is used in major league baseball. Hell, it's everywhere now.
Jan 17, 2008 10:46 pm Yep, the endurance racing or AMLS (American LeMans Series) uses it at certain tracks I have heard, and I believe the FIA does as well.
I forgot about that part of it.
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