21 février 2022
Envoyé par : LA REDACTION
Catégorie : Benin, BLOG, International

Sketching on maps has proven to be a useful tool during participatory land rights mapping. However, the co-creation of information and analog way of mapping necessitates substantial effort to transfer the sketched maps into a georeferenced digital format and combine them with any attribute data. SmartLandMaps addresses this challenge through its approach and tools facilitating the automatic digitization of hand-drawn sketches on existing maps. This paper reports on a pilot study carried out in Benin, in February 2022. In collaboration with the PMAF project (Projet de Modernisation de l’Administration Foncière) and YILAA (Youth Initiative for Land in Africa), SmartLandMaps collected data on more than 400 parcels in an urban and a rural study site using UAV orthoimages as base maps. After the mapping session, the results were automatically digitized and compared with reference data from PMAF and GNSS measurements. Overall, the SmartLandMaps process proves to be highly efficient. In both study sites, more than 95% of all hand-drawn boundaries were automatically extracted and correctly vectorized. Good facilitation of the mapping process enabled most hand-drawn boundaries to be within an acceptable level of accuracy. Scaling up this approach with the support of many mapping teams is feasible, as enhanced workflows and the SmartLandMaps technology enable fast and reliable digitization of analog maps within a few hours and only minimal professional capacity or know-how.
Sources: YILAA and SmartLandMap works, Feb.2022 in Benin

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ACKNOWLEDGEMENTS

The authors of this conference paper thank the entire team of the PMAF project, YILAA, Xavier Codjia (VNG International) for supporting the realization of this pilot project and all citizens who joined our participatory mapping activity. SmartLandMaps is funded through the European Social Fund and the Ministry of Economic Affairs, Innovation, Digitalization, and Energy of the State of North Rhine-Westphalia (EFRE-0400389).