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Paper2GIS is a PPGIS system that allows participants to draw data onto paper maps. Based upon a photograph, the software can automatically extract the markup from the map and turn it into a georeferenced shaoefile for analysis.

The extraction process is illustrated below:

how it works

Paper2GIS that seeks to address two significant challenges to the field of Public Participatory GIS (PPGIS): the representation of geographical entities collected from the public and the ‘digital divide’. It was created with a particular focus upon the collection of data from participants in remote locations who might not have access to electricity, computers or the Internet (which are normally required in PPGIS exercises). Paper2GIS therefore allows participants to simply draw information onto paper maps. Following data collection, the maps are photographed and input into the software:

example of marked up image

Paper2GIS then identifies the map in the image and extracts it using computer vision techniques…

example of matching

…then identifies any markup on the map, which it extracts and then outputs as georeferenced vector GIS data for analysis.

You can learn more at Paper2GIS and in the academic abstract:

Huck, J.J., Dunning, I., Lee, P., Lowe T., Quek E., Weerasinghe, S. & Wintie, D. (2017). Paper2GIS: A self-digitising, paper-based PPGIS. In: Proceedings of the 14th International Conference on Geocomputation.

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© 2018 Jonny Huck