object tracking using kalman filter

object tracking using kalman filter

hi,
I want to track object using kalman filter as real time..
not I connect my webcam and I have kalman filter code in matlab...
the kalman filter code is working while the system is not real time..
I mean when I appled the code on the image sequence.. it works.. it
can detect moving object and draws a circule around the object...
but when I work the same code in real time, it can not detect the
moving object or if detect it does not draw enough size of circule
round object...

can u help me...