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osmlab
Buildings in Denmark
Task Description
This task outlines work to improve OSM building data in Denmark.
Mapping Guidelines
We noticed there are some missing buildings in a few cities in Denmark: Copenhagen, Aarhus and Odense. After we message the talk-dk email list and get feedback and suggestions for this project, the team will map buildings manually using the data Apple released previously as a guide, and using imagery sources and GPS resources as listed below.
The team will follow OSM and Denmark policy, along with any other guidelines as appropriate.
When in doubt, the team will use the existing tags and data which are used locally. The history in JOSM (ctrl-H) identifies what previous mappers added and their notes and/or explanations regarding changes made. This history can also show if a previous mapper has visited that area or has expert knowledge or sources.
Our team uses the hashtag #adt (for Apple Data Team) for our edits.
Area of Focus
- Copenhagen
- Aarhus
- Odense
Tools
The team will use JOSM for completing the task. JOSM has validation warnings for buildings and other possible issues that are important to prevent improper changes.
Sources
- Denmark SDFE
- DigitalGlobe Standard/Premium imagery
- Bing imagery
- Mapbox imagery
- ESRI imagery
- Mapillary
- OpenStreetCam
- Strava and OSM GPS traces
- OpenAerialMap
The team will apply image offsets as needed.
Changeset Comments
The team will provide changeset comments that are in compliance with OSM changeset guidelines.
Where needed, the team will tag corrections with review_requested=yes so the local community can double check them.
Error Detection
The team will check for errors visually and using JOSM validation warnings prior to committing the changeset.
In addition, the team will review its work in accordance with validation guidelines such as the OSM Wiki and LearnOSM.
Contributors
MapRoulette
We have also posted MapRoulette challenges related to the road network: https://maproulette.org/browse/projects/39285
For more information
Our community lead is Teddy Ahlvin and our editing leads are Jon Westlake and Erica Olson. To get in touch with Teddy, you can email or contact him via OSM. All of our leads can be reached via email.
We have finished this project and updated the community via talk-dk. In total our team added just over 35,000 missing buildings to OSM using SDFE imagery with the SDFE and Apple building layers to help guide us to where buildings were missing.