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 Web cam detection

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pneves



Number of posts : 1
Localisation : Portugal
Registration date : 2006-07-26

PostSubject: Web cam detection   26/7/2006, 02:04

I wonder if some of you are already using web-cam detection.
I was using laser pointers and photodiods and i was not very satisfied with this.
My doubt is, if I use 30fps (this is a quite ususal setting for video purposes) this means a scan every 33ms, if the car is 12cm long and runs at 6.0m/s it might find it's way between two scans?!?!? is this realistic? do I have to increase the scan rate? according to my calculations I would have to go for 60 or 70fps! to avoid a "slip-through", this might be too heavy for the hardware, can you share with me your experience and comments on this.
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guy

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Number of posts : 2058
Localisation : Belgique
Registration date : 2006-01-25

PostSubject: Re: Web cam detection   26/7/2006, 13:34

I propose you try the demo of web zone trigger here http://www.zonetrigger.com/
if you place the webcam on a slow part of your track you don't need to have 70fps.
I try webzone zone trigger with 20 fps on a 8 lanes track and it seem to work.
cheers
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