[josm-dev] Microsoft gains access to aerial imagery

[Alan Mintz]

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 <Alan_Mintz+OSM at Earthlink.net>