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<DIV><!--StartFragment --><SPAN class=843132905-26092005><FONT face=Arial
size=2>Might I suggest globalmapper, available from <A
href="http://www.globalmapper.com">http://www.globalmapper.com</A>. We
have found this software to be excellent for rectification of scanned maps, as
it has a wide variety of projections available as well as a GUI interface to
apply control points. It has a rubber sheeting transform available and the
results are better than other, substantially more expensive software we've used
for the same purpose.</FONT></SPAN></DIV>
<DIV><SPAN class=843132905-26092005></SPAN> </DIV>
<DIV><SPAN class=843132905-26092005></SPAN><SPAN class=843132905-26092005><FONT
face=Arial size=2>The development team is responsive and
flexible. </FONT></SPAN></DIV>
<DIV><SPAN class=843132905-26092005></SPAN> </DIV>
<DIV><SPAN class=843132905-26092005></SPAN> <SPAN
class=843132905-26092005><FONT face=Arial size=2>Best,</FONT></SPAN></DIV>
<DIV><SPAN class=843132905-26092005><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=843132905-26092005><FONT face=Arial size=2>John
Novak</FONT></SPAN></DIV>
<DIV><SPAN class=843132905-26092005><FONT face=Arial size=2>Novacell
Technologies</FONT></SPAN></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV>Thomas Flemming wrote: </DIV>
<BLOCKQUOTE cite=mid4334323B.9030906@ttqv.com type="cite">Hello, <BR><BR>
<BLOCKQUOTE type="cite">It seems like what you would want is a rubber
sheeting transform <BR>of some kind based on a bunch of reference
points. Two reference <BR>points wouldn't give you much
information. PROJ.4 does not <BR>address this issue. I do have
such a capability in GDAL - <BR>underlying transformations based on
reference points and a way <BR>of applying it to resample rasters.
<BR></BLOCKQUOTE>Puh, this sounds good, btu I think GDAL is too big for me to
understand for this single task. <BR><BR><BR><BR>
<BLOCKQUOTE type="cite"><BR>I would recommend an eight-parameter projective
transformation based on <BR>four points of a graticule. The panelling
of such is identical to the old <BR>graphical technique employed by
cartographers of 20 years ago. <BR></BLOCKQUOTE>I have this eight-parameter
projective transformation already in my software, but it does not work good
for maps which are stitched from many scanned papermaps. <BR>In this case I
need much more control points. <BR><BR><BR>Best regards, <BR>Thomas
<BR><BR></BLOCKQUOTE>
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