How to Improve Quality of Crowdsourced Cadastral Surveys

The potential for introducing voluntary citizen participation, combined with mobile services, for cadastral data collection for a systematic first registration has been thoroughly investigated and even implemented in some official projects. This data collection procedure can technically be ac-compli...

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Bibliographic Details
Published in:Land (Basel) 2022-10, Vol.11 (10), p.1642
Main Authors: Apostolopoulos, Konstantinos, Potsiou, Chryssy
Format: Article
Language:English
Subjects:
cadastral basemap
cadastre
Costs
Crowdsourcing
Data collection
Data entry
Digitization
Geospatial data
Investigations
land administration
Landowners
Methods
Participation
Professionals
Public participation
Quality control
quality controls
Registration
Services
Surveys
Wireless communication systems
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Summary:The potential for introducing voluntary citizen participation, combined with mobile services, for cadastral data collection for a systematic first registration has been thoroughly investigated and even implemented in some official projects. This data collection procedure can technically be ac-complished safely, but results have shown that many participants have difficulty in identifying the land parcels (location, shape and size) on the base-map (orthophoto, air-photo, etc.) correctly. Either they have to ask the assistance of a private professional, or there is a high risk that a number of errors may appear in the submitted crowdsourced data. This paper investigates how to improve the quality of such crowdsourced cadastral data, by adding to the base-map any available and relevant geospatial and descriptive information that may help the participants to correctly identify their land parcel. In particular, the research investigates and suggests (a) which types of available geospatial information should be added to the base-map and by whom (professionals or a group of trained volunteers), and (b) the necessary quality controls that must be made in the compilation of the advanced crowdsourced base-map—a case study follows to assess the suggested proposal. In addition, this paper provides an updated version of the crowdsourced methodology for cadastral surveys as modelled by the authors in an earlier stage of their research. This updated version briefly includes all quality controls needed to ensure the quality of a modern cadastre that the authors will further investigate in a subsequent stage.
ISSN:2073-445X
2073-445X
DOI:10.3390/land11101642