add a python module for the fusion of height_maps
change the inf to nan in the height maps computed by height_rpc_move
affine registration of heights before merging
moved the conversion of inf to nan from triangulation.transfer_height_map to
triangulation.compute_point_cloud
added mophological filtering before affine registration of height maps
moved median filter to common module, replaced median filtering with zoom out
in the fusion registration process
commented out debug stuff
fill the small (1 pix) holes induced by the height_rpc_move with median filter,
and moved the conversion inf to nan back at the end of the transfer_height
function
refactored the main script, to manage the fusion of height maps in the case of
triplets
fix
add precision parameter to fundamental_matrix_ransac()
added a module visualisation. Implemented a function to display the keypoints
matches on a Pleiades pair.
added some debug stuff, and changed a few parameters (just testing)
[IMPORTANT]: fixed a bug in homography_cropper.py, affecting the precision of
the rectification process. The computed homographies were correct, but
incorrectly applied to images. To be applied, each homography is decomposed in
a translation + homography. The translation part is applied by doing a crop,
then the remaining homography is applied with the 'homography' binary, on the
previous crop. There was an issue with rounding the coordinates of the crop.
Merge branch 'fusion' of https://github.com/carlodef/s2p

Conflicts:
	main_script_pairs.py
	python/rectification.py