Results from the VIPER Project (continued)

Here we present some additional results with Pittsburgh data (more general results are available) when running the VIPER system.

The Pittsburgh map that we used is a 7.5 minute Digital Elevation Map, supplied by the USGS (United States Geological Survey) and can be freely distributed and available for download.

First, we took a panorama in the island by the 30th Street bridge, and had the system find the skyline:

The system's best estimate, processing the full map *and*
with a plus/minus 15 degree tolerance, was the point (73, 346). The
correct location was (71, 348), so the error was 85 meters.
The posterior distribution (with a detail on the right) is below;
the prior again was uniform.

Second, we took a panorama by the Waterworks Mall, and had the system find the skyline:

The system's best estimate, processing the full map *and*
with a plus/minus 15 degree tolerance, was the point (306, 424). The
correct location was (311, 423), so the error was 153 meters.
The posterior distribution (with a detail on the right) is below;
the prior again was uniform.