Dear all,
I have some aerial photos from different time periods that I would like to
register acurately in MapInfo - acurately enough so  that I can digitise
river channels over it and look at the change in extent of the channel. 
However when you zoom in on a black and white aerial photo the boundaries
that you would like to use as points to register are way too fuzzy to do it
accurately. 
I set the dpi so that the file is about 1-1.6MB, jpeg/gif image. 
(I am soon to have access to a computer with 36 GB, 256MB of RAM, Pentium
4).

Does anyone know how this is usually done? (without buying extraordinarily
expensive software) 

cheers,
Suzanne.

[EMAIL PROTECTED]



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