On Sun 10 Oct 2004, Thierry Klein wrote:
> From what I have read so far, I need to compute a homography between planes
> and 9 points is too much (4 points would be enough) but I can probably use a
> least squares method to improve result whith my 9 points...
[...]
> Can anybody tell me which package I should use [...]
rpl/rrel/rrel_homography2d_est.h can be used for robust homography
estimation. (Least squares is an option, of course.) Have a look at
the example in rpl/rrel/examples/homography2d_fit.cxx. This file
estimates the same homography using multiple robust estimation
techniques. If you want to simply get a least squares fit, use
rrel_homography2d_est::weighted_least_squares. To convert the
homography matrix into a parameter vector and back, use the member
functions homog_to_params and params_to_homog.
Amitha.
