[Mapserver-users] rubber sheeting

[Jan Hartmann]

Hi list,

I'm looking for some public domain rubber sheeting transformation 
programs or algorithms. I have some historical maps that are distorted 
differently in different parts of the map. I can find lots of control 
points in contemporary exact maps, and I would like to transform the old 
ones as accurately as possible into the modern coordinate system by 
rubber sheeting. This can be done in ArcInfo, but is there something 
available in the public domain? An algorithmic description would be a 
second best solution; I could probably program something around it (and 
perhaps put it into MapServer, Proj, or Gdal).

Thanks,

Jan