Web-based Participatory GIS with data collection on the field: a prototype architecture in two and three dimensions

Transcription

1 8 Convegno Nazionale del Gruppo di Geologia Informatica Sezione della Società Geologica Italiana Chiavenna (SO), giugno 2013 Ex Convento dei Cappuccini, Via Molinanca DICA Laboratorio di Geomatica Polo di Como Web-based Participatory GIS with data collection on the field: a prototype architecture in two and three dimensions Maria Antonia Brovelli, Marco Minghini, Giorgio Zamboni Politecnico di Milano, DICA Laboratorio di Geomatica del Polo Territoriale di Como

2 Geospatial Web 2 WWW

3 Geospatial Web data 3

4 4 Geospatial Web users data

5 5 Geospatial Web users data catalogues

6 6 Geospatial Web users data processing catalogues

7 7 Geospatial Web users INTERNET data processing catalogues

8 GeoWeb 2.0 and Web-based Participatory GIS 8 Web 2.0 online applications allowing rich user interaction dynamic Web as opposed to static (1.0) Web Web 2.0 in five keywords: sharing, participation, collaboration, user-generated information, virtual community GeoWeb 2.0 (Web Mapping 2.0) interactive tools allowing user participation in spatial data management neogeography: creation of maps through mash-ups of multiple data sources Volunteered Geographic Information (VGI): the idea of humans behaving like sensors able to register geospatial contents Proliferation of mobile devices equipped with sensors (GPS, camera, etc.) users can easily perform real-time collection of georeferenced data Participatory GIS (PGIS) GIS as a tool for promoting citizens' intervention in decision-making processes Web-based applications allowing maps mash-ups, content upload and editing

9 Participatory GIS - required functionalities 9 Data description information should be described with a standard language comprehensible to everyone (e.g. GML, KML, NetCDF, CityGML, WaterML) Data sharing information should be made available through standard protocols in order to be widely accessed from different client applications (e.g. WMS, WFS, WCS) User administration systems should manage multiple user profiles and their related privileges Mash-up maps coming from different sources should be directly overlapped in order to automatically integrate multiple information referred to the same context Data editing users should be able to manipulate (e.g. insert, update, delete) geographical features through standard common interfaces (such as WFS-T)

10 10 Participatory GIS - an Open Source architecture SERVER CLIENT 2D WMS 3D template form AGGREGATE compiled form COLLECT

11 Form creation 11 BUILD Creation of customized forms through an intuitive drag-and-drop interface More complex forms can be created with the XLSForm tool

12 Form and user management 12 AGGREGATE Form templates upload, options management and submitted forms export User administration and assignment of privileges

13 Execution of the field-survey Application main menu: 13 COLLECT

14 Execution of the field-survey Application main menu: 14 COLLECT

15 Execution of the field-survey Download della form di interesse: 15 COLLECT

16 Execution of the field-survey Application main menu: 16 COLLECT

17 Execution of the field-survey Guided form compilation: 17 COLLECT

18 Execution of the field-survey Guided form compilation: 18 COLLECT

19 Execution of the field-survey Guided form compilation: 19 COLLECT

20 Execution of the field-survey Guided form compilation: 20 COLLECT

21 Execution of the field-survey Guided form compilation: 21 COLLECT

22 Execution of the field-survey Guided form compilation: 22 COLLECT

23 Execution of the field-survey Guided form compilation: 23 COLLECT

24 Execution of the field-survey Guided form compilation: 24 COLLECT

25 Execution of the field-survey Application main menu: 25 COLLECT

26 Execution of the field-survey Application main menu: 26 COLLECT

27 2D data visualization - computer 27

28 2D data visualization - computer 28

29 2D data visualization - tablet 29

30 2D data visualization - tablet 30

31 2D data visualization - smartphone 31

32 3D data visualization 32 NASA World Wind Virtual Globe open source, cross-platform Java Software Development Kit (SDK) interactive Web visualization of 3D globes, maps and geospatial information default collection of WMS layers served by NASA and USGS Authentication mechanism users can get data from multiple WMS servers to build customized mash-ups only registered users can save their projects (i.e. layers, zoom level, latitude, longitude, height of the point of view and camera orientation) saved projects populate a catalog which is available for all the community Interaction with the Points Of Interest (POIs) the owner of a POI (i.e. the user who created the POI via ODK Collect) is able to edit it (i.e. move it on the globe and modify its details) and delete it all registered users can participatively contribute to POIs characterization by adding comments and multimedia contents (i.e. images, videos and audios)

33 3D data visualization 33

34 3D data visualization 34

35 Conclusion and future work 35 Creation of a Web-based, open source Participatory GIS: system for user administration data collection on the field 2D and 3D data visualization and sharing Further improvements: ODK Collect customization to provide an interactive map allowing users: to register the position even without GPS-enabled devices to refine the GPS-estimated position receiver precision mismatch between the point where the picture is taken and the object being photographed 2D and 3D client enrichment with tools for time-filtering submitted data

36 36 Contacts Grazie per l'attenzione! Marco Minghini Politecnico di Milano Laboratorio di Geomatica - Polo Territoriale di Como Via Valleggio 11, Como (Italy) marco.minghini@polimi.it