experiments:
Merge branch 'master' of https://github.com/carlodef/s2p
Merge branch 'master' of https://github.com/carlodef/s2p
Merge branch 'master' of https://github.com/carlodef/s2p
main script as a function
tristereo matching
Merge branch 'master' of https://github.com/carlodef/s2p
Merge branch 'master' of github:gfacciol/s2p
reduced the amount of infrared added to the green channel in the colorization
step, from 0.4 to 0.1
added a function to transfer the heights back on the original grid.

It's just a wrapper for the height_rpc_move binary.
integrated the transfer_heights function in the main script, to get 3D point
clouds built from the unrectified images