[OSM-talk] magical road detector to play with

Alan Mintz Alan_Mintz+OSM at Earthlink.Net
Mon Feb 14 07:45:08 GMT 2011


At 2011-02-03 09:17, Steve Coast wrote:
>http://www.bing.com/community/site_blogs/b/maps/archive/2011/02/03/automatically-detect-roads-with-bing-aerial-imagery.aspx

This is something that has the potential to greatly increase mapping 
productivity!

A couple of things:

1. When I run the sample 
http://magicshop.cloudapp.net/DetectRoad.svc/detect/?pt1=47.6274924080735,-122.119339391984&pt2=47.6266897967272,-122.116431877412&bbox=47.628475815791,-122.120927259721,47.6254135470002,-122.114489958085

It produces a road segment that is not very well centered. The imagery for 
this area is rather good (~0.06m/pel - zoom 21) and it should be a fairly 
easy case. Can someone look at this? Is it being too sensitive, not 
sensitive enough, etc.? Can some of the internal parameters be exposed so 
we can play with them?

2. When I try 
http://magicshop.cloudapp.net/DetectRoad.svc/detect/?pt1=47.6312440,-122.1126077&pt2=47.6263360,-122.1179483&bbox=47.632,-122.119,47.625,-122.109 
it complains "Error Status Code: 'BadRequest' Details: The points are too 
close together." Even though these points are further apart (~700m) than 
the ones in the example.

--
Alan Mintz <Alan_Mintz+OSM at Earthlink.net>




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