ISPRS Int. J. Geo-Inf. 2013, 2(2), 349-370; doi:10.3390/ijgi2020349
Article

Using Geometric Properties to Evaluate Possible Integration of Authoritative and Volunteered Geographic Information

Received: 4 March 2013; in revised form: 15 April 2013 / Accepted: 18 April 2013 / Published: 25 April 2013
(This article belongs to the Special Issue Collaborative Mapping)
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: The assessment of data quality from different sources can be considered as a key challenge in supporting effective geospatial data integration and promoting collaboration in mapping projects. This paper presents a methodology for assessing positional and shape quality for authoritative large-scale data, such as Ordnance Survey (OS) UK data and General Directorate for Survey (GDS) Iraq data, and Volunteered Geographic Information (VGI), such as OpenStreetMap (OSM) data, with the intention of assessing possible integration. It is based on the measurement of discrepancies among the datasets, addressing positional accuracy and shape fidelity, using standard procedures and also directional statistics. Line feature comparison has been undertaken using buffering techniques and statistics, whilst shape metrics, including moments invariant, have been applied to assess polygon matching. The analyses are presented with a user-friendly interface which eases data input, computation and output of results, and assists in interpretation of the comparison. The results show that a comparison of positional and shape characteristics of OS data or GDS data, with those of OSM data, indicates that their integration for large scale mapping applications is not viable.
Keywords: geospatial dataset matching; data quality; accuracy assessment; formal and informal data; collaborative mapping
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MDPI and ACS Style

Fairbairn, D.; Al-Bakri, M. Using Geometric Properties to Evaluate Possible Integration of Authoritative and Volunteered Geographic Information. ISPRS Int. J. Geo-Inf. 2013, 2, 349-370.

AMA Style

Fairbairn D, Al-Bakri M. Using Geometric Properties to Evaluate Possible Integration of Authoritative and Volunteered Geographic Information. ISPRS International Journal of Geo-Information. 2013; 2(2):349-370.

Chicago/Turabian Style

Fairbairn, David; Al-Bakri, Maythm. 2013. "Using Geometric Properties to Evaluate Possible Integration of Authoritative and Volunteered Geographic Information." ISPRS Int. J. Geo-Inf. 2, no. 2: 349-370.

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