Written recently:
The main task is the correspondence problem (ie matching the
same features in the two images). Traditionally this was
done by hand, but there are now efforts to do this automatically
- mostly very expensive. I had a student doing this, using a technique
probably
superior to anything else around (feature matching followed by heirarchical
pattern matching) but we stopped development when we saw Hi-View (now
available within ERMapper) and other commercial packages start to appear,
and when we saw that developing a friendly interface was definitely not
his forte ;-). If anyone is interested we could probably make this available
for the guts of a new module.
Do you mean you want a user interface developing?
I feel that to move on, GRASS should have this air photo dem facility.
I may be interested in developing the front end.
J. Stocks,
GIS Research Officer,
School of Agricultural and Forest Sciences,
University of Wales,
Bangor,
Gwynedd,
Great Britain.