Matt Williams <lists <at> milliams.com> writes:
> > Maybe it would be possible to buy (build) a Camera, GPS,... Unit to > > mount at a plane and rent the plane. > > Many governments need orthophotos and maybe they are willing to sponsor > > the plane for some hours if > > they get usefull public domain images. > > Have a look at a lot of the recent discussion on talk-gb. We recently > hired a plane to fly over Stratford-upon-Avon to collect imagery. > We're currently in the process of stitching it together to be used for > tracing. Making orthophotos is pretty standard work and competition is hard. Governments acquire already regularly (every 3-5 year) good quality aerial images for mapping purposes. National Land Survey of Finland, for example, is selling these images as orthophotos for a list price of 7.32 € per square km (0.5 meter pixel size colour or false colour images). I suppose that if you order your own flight the cost of ready made orthophotos would be about 15-25 € per square km but then the area should be reasonably big. The first flying hour is always the most expensive. _______________________________________________ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
