2010/3/24 John Smith <[email protected]>: > On 24 March 2010 21:47, andrzej zaborowski <[email protected]> wrote: >> geometry. A complete algorithm would have to go through each possible >> combination of all the routing parameters (oneways, traffic calming, >> label on one end, label on the other end, etc etc) and find a solution > > Depending on the resolution of the imagery, you can some times work > out direction and one way due to arrows painted on the road surface. > Same with traffic calming...
You can do a lot based on aerial imagery, but even more things you can't derive from them, or you can only derive if you know that it is there. I started to map fences, walls and other barriers, but informal openings in them, their height, whether it is a wall or a fence, etc. you can mostly not get from aerial fotos. You might be astonished when visiting an area for real that you previously traced from aerial imagery how much interesting detail you actually missed. cheers, Martin _______________________________________________ dev mailing list [email protected] http://lists.openstreetmap.org/listinfo/dev
