El Sábado, 11 de Abril de 2009, Tim Waters (chippy) escribió: > What happens is that the distance from lens to ground is different > over varying terrain, so it doesn't match what a map would be.
These will help: http://en.wikipedia.org/wiki/File:OrthoPerspective.svg http://en.wikipedia.org/wiki/File:AerialDigitalPhoto.JPG http://en.wikipedia.org/wiki/Orthophoto > I think the way these are done are to use a digital evevation model - > I would hope the free SRTM could be sufficient? On the contrary: AFAIK, SRTM's are done by seeing the differences between overlapping aerial photos. -- ---------------------------------- Iván Sánchez Ortega <[email protected]> MSN:[email protected] Jabber:[email protected] ; [email protected]
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