Bing Aerial Imagery  - ~10m western problem

Mr_Israel · 2010-12-03T13:49:43.000Z

The problem of the ~10m western of the map material exists all over Israel.
Its really hard to find a reference point. Anything we can agree on?

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Solution:
use the following buildings for reference to adjust the bing map in the background:

http://www.openstreetmap.org/browse/way/91370120 (between Akko and Haifa)
http://www.openstreetmap.org/browse/way/34866288 (Netanya)
http://www.openstreetmap.org/browse/way/91373185 (east of Haifa)

talkat · 2010-12-03T15:47:06.000Z

Mr_Israel:

The problem of the ~10m western of the map material exists all over Israel.
Its really hard to find a reference point. Anything we can agree on?

The best is a narrow way that has many gps tracks uploaded.
Something like a tertiary leading to a popular place, etc.

This is a very good example why we need to keep uploading tracks, and not rely on aerial imagery alone.

talkat.

adrukh · 2010-12-04T13:11:30.000Z

A quick tip - background images can be aligned by holding space while dragging the map (potlatch 2).

dimka · 2010-12-06T20:05:52.000Z

Does somebody know if it is possible to manually align the Bing imagery in JOSM?

Mr_Israel · 2010-12-07T10:57:16.000Z

seems like there are people trying to solve this issue in the future:
http://wiki.openstreetmap.org/wiki/True_Offset_Process

Mr_Israel · 2010-12-24T08:14:10.000Z

Hi everybody,

today I tried to add several places and streets with the help of Bing to the map.
And I tried to believe the GPS tracks but they are all different.

I think the best way to have all Bing mappers setup the same way is to have orientation buildings.

Here are some buildings I create for that reason:

http://www.openstreetmap.org/browse/way/91370120 (between Akko and Haifa)
http://www.openstreetmap.org/browse/way/34866288 (Netanya)
http://www.openstreetmap.org/browse/way/91373185 (east of Haifa)

I hope you can add more reference buildings to this thread.

adrukh · 2010-12-24T15:46:46.000Z

Mr_Israel:

I think the best way to have all Bing mappers setup the same way is to have orientation buildings.

I have the feeling that the skew is slightly different for each area. I usually center the background according to major roads and intersections in the area. This is not based on hard evidence or calculations, just a hunch.

talkat · 2010-12-24T16:03:54.000Z

adrukh:

I have the feeling that the skew is slightly different for each area. I usually center the background according to major roads and intersections in the area. This is not based on hard evidence or calculations, just a hunch.

I feel the same, and do the same.
Also, before I align the BING images, I turn on all the gps traces of the area and do some average-by-hand, as sometimes roads are not as good as a gps trace.

talkat.