In this project I implement and compare different methods to calculate the optical flow of an image sequence captured using tagged MRI. The difference in the methods consist in different approximations for the gradient calculation. I start with the finite differences before advancing to a higher order method, the B-Splines. For each method I also compute a confidence map, which gives an indication for the feasability of the results. Furthermore I drop the Iso-Intensity assumption to introduce a contrast decay.
Velocity map calculated using finite Differences
Velocity map calculated using B-Splines
Sensitivity Map using B-Splines
Sensitivity Map using B-Splines with contrast decay