At 2010-12-01 21:01, Alan Mintz wrote:
6. There is a road centerline benchmark that appears at 34.101866, -117.569148 +/- 0.6m in the USGS 0.3m imagery, and at 34.101874, -117.569162 +/- 0.14m in the Bing imagery - ~1.6m at 305 degrees away. This seems pretty well-aligned for our purposes. I've got some high-precision benchmarking I did in the area, which I'll look at later to see what the complete story is.
I checked against two ~1m precision benchmarks and came up with a max error of ~1.7m, but with a pattern that suggests it's more likely to be sub-meter - very good.
-- Alan Mintz <[email protected]> _______________________________________________ josm-dev mailing list [email protected] http://lists.openstreetmap.org/listinfo/josm-dev
