Many of the photos taken above Stratford upon Avon seem to be taken at an angle-how do people find them for mapping from?
2009/9/14 Chris Hill <o...@raggedred.net> > 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