ZoneMinder Forums

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?

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.

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