[Freegis-list] Polynomial approximation of control points

[Ronan]

I'm looking for a C/C++ source code for a polynomial approximation of
control points. 
 
Input : X Y LAT LON of control points. 
Output : polynomial coefficients, any degree of polynomial (1, 2, 3.)
Can be used from projected coordinates (XY) to LAT / LON and back. 
 
The purpuse is to georeference raster charts from a paper source. 
 
I've not seen any software at FreeGIS with such capacity. I'm not expert
of all freegis software, but usually they use rectified images,
conformal to one defined projection. They do not manage errors in shape
from paper source. 
 
 
Ronan GOLHEN
Technical Manager
I&M  <http://www.maxsea.com> http://www.maxsea.com
<http://www.navcenter.com> http://www.navcenter.com 
mailto:ronan at informatique-mer.fr
Tel:33 (0)5 59 43 81 02     Fax: 33 (0)5 59 43 81 01
Mobile : 33 (0)6 10 76 66 51
 
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