Sensor to detect direction over a longer range

I want to create a camera that can follow a person around ( a football player on a pitch). Both Ultrasonic and IR-sensors would be way to short range since the maximum distance could be as much as 100 meters. Do you have any ideas on what to use for this application?

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vsluiter over 11 years ago

What do you mean with "follow around"; should your camera physically be on the field and follow a player, or do you have a tripod-based camera that should keep someone in view?
My first idea would be to use image recognition as you already have a camera.....
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vsluiter over 11 years ago

What do you mean with "follow around"; should your camera physically be on the field and follow a player, or do you have a tripod-based camera that should keep someone in view?
My first idea would be to use image recognition as you already have a camera.....
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marjasin over 11 years ago in reply to vsluiter

Sorry for the bad description.

The camera is mounted on a tripod with a servo that can change the angle. I need to know if I should change the position more to the right och to the left. Maybe image recognition is a good option, I just thought it might be hard since there will be other people on the pitch as well.
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vsluiter over 11 years ago in reply to marjasin

To quote Coldplay: "Nobody said it was easy".
If you have to track one player you won't be able to use one camera, or that player has to wear another color tshirt than other players.
Have you looked at this article / the research behind it: Tracking Footballs with Magnetic Fields ?
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