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How the yellow line works

Discussion in 'PatsFans.com - Patriots Fan Forum' started by PatsWickedPissah, Jan 8, 2009.

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  1. PatsWickedPissah

    PatsWickedPissah PatsFans.com Supporter PatsFans.com Supporter

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    Disable Jersey

  2. tanked_as_usual

    tanked_as_usual Banned

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    I just want to know why RB's keep tripping over the blue line
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  3. JSn

    JSn Rookie

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    Nice find. Makes you figure it must have required 10x more guys to put tracers on a black hockey puck, hehe.
  4. Fencer

    Fencer Rookie

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  5. Pats726

    Pats726 Rookie

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    Always wondered how they did it...really interesting and I agree...a really advanced and good addition...
  6. Willie55

    Willie55 Rookie

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    After watching that, I'm still wondering! :D
  7. Pujo

    Pujo Rookie

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  8. upstater1

    upstater1 Rookie

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    That seems like an incredibly complicated way to do it.

    You're telling me they couldn't digitize it by simply having someone behind the ref say, 22 1/2 yard line is the first down. Then just paint a computer generated graphic stripe across the field.

    The reason, of course, is that the camera's are not sending the signal back to the truck digitally. It's all still analog, apparently. I'm amazed at that.

    If this were all digital, the line would appear no matter the camera angle. It would be based on a simulated model of the entire field, with every angle already pre-programmed for every stadium.
  9. PrairiePat

    PrairiePat Rookie

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    #32 Jersey

    No, the reason, of course, is that there are players running all over the field obscuring parts of the line in real time. You going to digitize all of them too? :D
  10. Pujo

    Pujo Rookie

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    As PrairiePat said, the problem is keeping the line visible above the turf, but below any players that go over it. Just drawing a line at the appropriate orientation would be trivial whether it's a digital or analog system (and where did you get the info that their cameras send an analog feed? I'd be very surprised if that were true, especially with the bandwidth you'd need to send an analog HDTV signal.)
    Last edited: Jan 8, 2009
  11. PatsWickedPissah

    PatsWickedPissah PatsFans.com Supporter PatsFans.com Supporter

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    The video said that the feed from the camera is over an already existing low bandwidth audio (voice) link that is analog. The analog to digital conversion occurs at the computer. It's obvious that the system is a clever afterthought utilizing stuff that was already there.

    Using a low paid television intern to 'mark' the 1st down via human intelligence is far cheaper than the software development testing and calibration of every NFL field in a fully automated system. Too complex a development, debug and test task for the utility. Writing real software is not like in the movies.
    Last edited: Jan 8, 2009
  12. Michael

    Michael Moderator Staff Member PatsFans.com Supporter

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    I saw an explanation of that a few years ago. On TV. I think that may have been the same video.
  13. Wax Frog

    Wax Frog Rookie

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    OK, Pissah, get cracking, link me to explanations of all the other overlays they do now :D
  14. 102 Pat

    102 Pat Rookie

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    Excellent video! I always wondered how it was done. I thought there might of been some kind of sensor in the yard markers...
  15. PatsWickedPissah

    PatsWickedPissah PatsFans.com Supporter PatsFans.com Supporter

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    By your command!
    I would your Froginess but I'm geting ready to go away for 2 months.
    I won't have a PC except for quick peeks at the local library.
    Back in March.
  16. Leave No Doubt

    Leave No Doubt PatsFans.com Supporter PatsFans.com Supporter

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    The very first time I saw the yellow line on TV I thought it was real.
    Last edited: Jan 8, 2009
  17. Wax Frog

    Wax Frog Rookie

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    Nah, that was just PWP "firehosing" :D;):D
    Last edited: Jan 8, 2009
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