Feature Points Tracker

[Yili Zhao]

Hi,
  using corner feature as control points is good. Pablo uses harris
corner detection to find corner feature. It seems that vigra also 
support this algorithm. 
  I also find that Kanade, Lucas and Tomasi have put forward a 
feature points tracker algorithm, and there is a implementation of 
their algorithm named KLT - http://robotics.stanford.edu/~birch/klt/ 
on the web. Maybe we can also integrate this algorithm like harris
corner in vigra and hugin as well.

Yili