I used to hold a pilot's licence and I did some work photographing archaeological sites. Photos taken pointing sideways are much harder to work with than photos pointing straight down. Any kind of rectification adds unwanted artifacts. I used to make high bank angle turns (60' bank angle) over the feature I wanted to photograph which made it very easy to photograph.
I was trying to photograph a small area in detail, so circling over the feature helped. I was also using film (before widespread hi-res digital), so there was a limited stock of film but the resulting image was the equivalent of about 25mp. To reduce parallax I used a telephoto lens. It gives a very interesting overview, but it's not a patch on surveying on the ground where you have access. Cheers, Chris Tristan Thomas wrote: > I would be very interested to hear what people think of this effort. > I'm currently studying to be a pilot & I know that many people who do > fly routinely take aerial pictures of the landscape below, especially > of towns etc. I know most of them would be more than happy to allow > their photos to be used of OSM. If we could find a way to upload them > somewhere, then I'm sure we could dramatically increase the aerial > photography we have without having to pay to hire the planes or get it > sponsored. I could just upload them all under one Flickr account for > OSMers to look through & do some tracing if they wish, but it doesn't > seem the most efficient way to do it? > > Thoughts? > ------------------------------------------------------------------------ > > _______________________________________________ > Talk-GB mailing list > Talk-GB@openstreetmap.org > http://lists.openstreetmap.org/listinfo/talk-gb > _______________________________________________ Talk-GB mailing list Talk-GB@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-gb
