Speed alarm
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Speed alarm
Would it be possible with 2 or motion zones on a static camera and a known framerate to calculate an objects speed and only alamr if over a certain amount?
James Wilson
Disclaimer: The above is pure theory and may work on a good day with the wind behind it. etc etc.
http://www.securitywarehouse.co.uk
Disclaimer: The above is pure theory and may work on a good day with the wind behind it. etc etc.
http://www.securitywarehouse.co.uk
- zoneminder
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The centre coords of a blob is calculated, and available via shm to scripts etc. So you could track the centre of motion (which is what zmtrack does). However speed would be a bit harder as you would need to know the range and direction to determine the speed from the angular offset. I guess if your cam positioning limits these factors (e.g. point square on to a road) then this would be possible to hard code.
Phil
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- Joined: Wed Jun 08, 2005 8:07 pm
- Location: Midlands UK
well if its possible we could enter the distance between two points overlaid on the image so that this could be used in the calcs i suppose. But the points would need to be moveable ie horizont or verical motion, also the distance between the points would need to be variable too ie further apart would give a more accurate reading i suppose
James Wilson
Disclaimer: The above is pure theory and may work on a good day with the wind behind it. etc etc.
http://www.securitywarehouse.co.uk
Disclaimer: The above is pure theory and may work on a good day with the wind behind it. etc etc.
http://www.securitywarehouse.co.uk