[ktharavaad]

I think you missed the point, their key innovation is to use a content preserving warp on a frame-by-frame basis to recreate almost ANY motion path they like ( provided that the path is close enough to the original path of course ).

The software you listed are simply a part of the system which they developed use, the tracking/scene analysis part of it. And you are right, that part of the software is not overly difficult to write, in fact you can throw together a Harris Corner detector + RANSAC to find correlation between the points and it'll do quite ok. In their case, they decided to use the Voodoo camera tracking system available here:

http://www.digilab.uni-hannover.de/docs/manual.html

which is comparable to the software you have listed

What I'm most interested in is the speed of processing their warps. From my experience of playing with ITK/VTK, generating non-rigid warps using b-spline, MFFD or any of the current algorithms takes a LONG time if you take the image content into account. I need to read the paper more carefully to find out.