<p>Maybe Map Warper <a href="http://warper.geothings.net/">http://warper.geothings.net/</a> can help you.</p>
<p>--Ciprian</p>
<p><blockquote type="cite">On Jun 13, 2010 4:50 PM, "Tristan Scott" <<a href="mailto:trs998@gmail.com">trs998@gmail.com</a>> wrote:<br><br>I happen to know a chap who has quite a lot of aerial imagery of<br>
Norfolk villages.<br>
Because he publishes the images, I cannot release the images to "the<br>
public" or to other mappers, but I can use them myself to generate<br>
mapping data.<br>
<br>
Some of the uses I have in mind is to map landuse in villages and<br>
missing roads, for villages where most of the roads have already been<br>
gps-mapped, giving lots of known points to perform the rectification<br>
from.<br>
<br>
Now, the images are taken at quite a low angle, so I'll need to recify<br>
them using software, ideally some sort of orthorecification thing in<br>
JOSM, if such is availiable. The tranform will be a basic trapezoid<br>
shape, but with a bottom probably half as long as the top (so the<br>
image taken at 45 degrees) possibly with slightly bowed sides for any<br>
barrel distorion in the lens. Obviously this will only work from items<br>
on the flat plane, but handily that pretty much describes norfolk.<br>
<br>
Does anyone have experience of this, who could point me in the<br>
direction of the appropriate JOSM plugin, or external software? I have<br>
Linux (Gentoo) and Windows XP on systems used for mapping.<br>
<br>
This must be a fairly common issue for mappers, right?<br>
<br>
Tristan Scott BSc(Hons)<br>
Yare Valley Technical Services<br>
07837 205829<br>
01603 858441<br>
<br>
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</blockquote></p>