OSM Quality Assessment – S4 presentation

12 January, 2009

The following presentation is a summary of the OSM quality assessment paper that I’ve posted here in August. It was presented in the UCL Centre for Advanced Spatial Analysis (CASA) S4 event which was held on the 8th January 2009.

The presentation does not include additional analysis to what included in the paper, apart from a graph that analyses the bias of coverage in comparison to the Index of Multiple Deprivation (Slide 37) which shows the analysis for urban areas only. In the slide, only areas with size up to single standard deviation from the average are shown. By and large, this means that only urban areas are included.

About these ads

One Response to “OSM Quality Assessment – S4 presentation”


  1. [...] The Geographers, GIS buffs and spatial analysts at UCL have always been big supporters of OpenStreetMap.  Over the last few years more and more of their attention has been turning to the study of crowd sourcing as a way of creating geographic information.  One great example of applying academic research to OSM is Muki Haklay’s 2008 OSM Quality Evaluation work, in which Muki compared OSM data to data sets produced by the UK Ordnance Survey (OS) – the UK Government body charged with mapping the UK.  The OS has a fierce reputation for for producing some of the most accurate and most detailed maps in the world, so its impressive to hear that: “The positional accuracy [of OSM] 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…”.  Of course OSM moves quickly – there are now more than 100,000 OSMers around the world compared with 35,000 this time last year – so when I spoke to Muki earlier this year I was excited to hear that there is more OSM data analysis on the way.  Watch this space and in the meantime, take a look at this recent presentation. [...]


Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s

Follow

Get every new post delivered to your Inbox.

Join 2,599 other followers

%d bloggers like this: