This add-on takes markers in one image and tries to find the corresponding image parts in the subsequent images.
To use it, open a ClickPoints session and add the add-on Track.py by clicking on 
.
Create a marker type with mode TYPE_Track. Mark every object which should be tracked with a marker of this type. Then hit F12 (or the button you assigned the Track.py to) and watch the objects to be tracked. You can at any point hit the key again to stop the tracking. If the tracker has made errors, you can move the marker by hand and restart the tracking from the new position.
The algorithm uses the position using a sparse iterative Lucas-Kanade optical flow algorithm bouguet2001pyramidal.
Attention
If the markers are not in a TYPE_Tracking type, they are not tracked by Track.py. Also maker which already have been tracked are only tracked again, if they were moved in ClickPoints.
References
refs.bib