Openstreetmap and the Humanitarian Openstreetmap

Team

Stand By Task Force – 17 March 2013

OpenStreetMap

A web project to create a free and open map of the entire world, built entirely from volunteers surveying with GPS, digitizing aerial imagery, collecting and liberating existing public sources of geographic data.

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History and stats

2004 : Start of OSM2012 :Users : + 1,000,000Nodes : + 1,800,000,000Ways : + 170,000,000

Community : State of the Map

Community : Mapping Parties

Wiki

Mailing lists

IRC

Forum

Governance

The ecosystem of the OSM community CitizensAssociations

Local governments

NGOsInternational Organizations (UN, WB)AcademiaPrivate actors:

• Google, Microsoft, Foursquare

• AND

• Cloudmade, Geofabrik, Camptocamp & DevelopmentSeeds

The growth of the OSM project is fostered by

• OpenStreetMap Foundation & local Chapters (France, Spain)

• Humanitarian OpenStreetMap Team (HOT) Hum/Dev contexts

Contributing : Tracing over imageryFree, purchased, negociated

Contributing :Survey

Contributing :Data imports : Public Domain

Data primitivesNode : basic elementLatitude & longitudeUsed for POIs

Way : ordered interconnection of nodesUsed for linear features

Closed Way : first and last nodes of the way identicalUsed for areas

Relation : group of any primitives with associated rolesUsed for relationships between objects and abstract objects

Tags/attributes• Tagging system fully flexible• Strongly recommended to use the already existing, debated, approved

and described tags so that the OSM data remains consolidated as much as possible.

• Wiki : http://wiki.openstreetmap.org/wiki/Map_Features

Web maps : ITO

http://www.itoworld.com/map/main

Walking Papershttp://walking-papers.org/

• Combined, GPS and Walking Papers can be used for rapid surveying and ground truthing.

• Walking Papers allow users to print out small sections of the OSM map. In the field, these paper maps can be used to draw new features, annotate existing data, and take notes that will help with the import of GPS data.

• Icons in each of the corners and a unique code for each Walking Paper let users scan the paper and upload to OSM so the notes can be viewed in an editing environment.

Openrouteservice.org

http://www.openrouteservice.org

Garmin Maps

Android

OsmandBrowsingRoutingEditing

OsmtrackerSurvey

UsesDownloading OSM data

http://download.geofabrik.de

UsesHOT Export Tool

http://hot-export.geofabrik.de

Documentation : Floss manual

http://www.flossmanuals.net/openstreetmap

Documentation : Learnosm.org

http://www.learnosm.org

Documentation : mapping checklist

QualityMuki Haklay (UCL) : positionning accuracy

• United Kingdom: OSM - Ordnance Survey Meridian II database

• Haiti: OSM - GoogleMapMaker -MINUSTAH/CNIGS

The analysis shows that, where OSM was collected by several users and benefited from some quality assurance, the quality of the data is comparable and can be fit for many applications.

The positional accuracy is about 6 metres, which is expected for the data collection methods that are used in OSM. The comparison of motorways shows about 80% overlap between OSM and OS .