Detecting and Tracking Moving Objects

I want to detect and track moving objects in a video(live).Kalman filter was an option but it needs either constant velocity or constant acceleration(please inform if its not!).What are the other possibilities

Answer 1

[Dima Lisin]

Hi Ashmil,

There are many different ways to detect and track moving objects.

Kalman filter does assume either a constant velocity or a constant acceleration motion model. However, it also assumes "system noise", which is a way to account for the fact that the actual motion of an object does not exactly fit your model. So, if the objects do not precisely move at constant velocity, but do move fairly predictably, you may still be able to use the Kalman filter.

[Ashmil Mohammed]

In my system,the objects are fast moving and are applied by forces in random order. So they can never be modelled as a constant velocity or constant acceleration model.

[Image Analyst]

did you try the first method in his link? Otherwise, are all your objects the same shape and intensity, or are the different? If you have all round balls and they move a lot so that essentially each frame is a totally random layout of balls, then there is probably no way to track. You'd have to increase your frame rate so that each does not move very far from its prior location.