2010/1/2 Anthony <o...@inbox.org>: > Where are you getting that "sub-metre accuracy" claim from? This thread > (http://www.mail-archive.com/talk...@openstreetmap.org/msg03414.html), which > you contributed to, throws out "3-5 meters", "1-4 meters", and "5 meters or > so".
They claim the imagery should be sub-metre, from what I've noticed the differences between different images on different dates are very close to each other. I can't however verify their claim, I don't have anything accurate enough, my claim was a best estimate based on GPS traces... > This seems like somewhere that the wisdom of crowds actually applies. I > think I'd trust the average of a bunch of independent GPS traces to a single > orthorectified aerial - especially in an area which isn't extremely flat. They're planning to re-fly once a month over capital cities and you can access their older images. > But I guess I might be convinced otherwise, if I'm actually shown the > "sub-metre accuracy" claim, which presumably outlines the methods utilized > to ensure such accuracy. I've cc'd Ben from nearmap on this email, I haven't seen what they do mentioned before. _______________________________________________ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
