Changeset: 113326961
Big rework in Laiferde. Good imagery offsets were made (GPS-data) -> routes improving -> buildings moved (as they crossed paths and streets). New objects were also added. Now it is time for local people to make it even better!
Closed by KirillB
Tags
created_by | JOSM/1.5 (18193 en) |
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source | Mapbox satellite; Bing; survey; GPS (database+own tracks); https://wiki.openstreetmap.org/wiki/DE:Bicycle/Radverkehrsanlagen_kartieren; |
Discussion
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Comment from KirillB
Additional info. Imagery offsets for Bing aerial and Mapbox satellite maps were made on the basis of own GPS-tracking: two devices recorded tracks simultaneously, accuracy was ca.1-3 meters (I made it on bicycle). To be sure that this data is good enough, I also checked map in the area with my old GPS-tracks from the last year (also on bicycle). Then I downloaded all available GPS-tracks in the area (most of them were recorded on auto, I think) and verify the correctness and consistency of the offset created (I checked that most of the tracks were inside of the roads - it is important to make it outside of the village, as buildings can distort GPS-signals!).
Properly aligned imagery and GPS-tracks were used to fix the roads and paths first. As some buildings crossed the paths and streets, I had to move them. As far as I saw, most of the objects in Laiferde were created with really old aerial maps, so they were misaligned even in comparison with newer satellite maps without offset.
Then I found that many objects were missing... So, in principle, it was almost total rebuilt of Leiferde.
I hope that fellow mappers will read this comment to understand, why so many changes were made, before they will decide to move objects according to non-corrected satellite maps
- 998722653, v1
- 998722654, v1
- 998722656, v1
- 998722657, v1
- 998722658, v1
- 998722659, v1
- 998722664, v1
- 998722665, v1
- 998722666, v1
- 998722667, v1
- 998722668, v1
- 998722669, v1
- 998722670, v1
- 998722673, v1
- 998722674, v1
- 998722675, v1
- Lönsweg (15806742), v11
- Volkser Straße (15806745), v26
- 18937128, v10
- Westerheide (23517610), v18
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