Masterstudium: Medieninformatik Diplomarbeitspräsentation Dietmar Pangerl Games with a Purpose Design and implementation of a serious game to determine global land cover Kontakt: [email protected] | [email protected] | [email protected] Problemstellung PROBLEM STATEMENT GEO-WIKI A SERIOUS GAME FOR GLOBAL LAND COVER CLASSIFICATION RESULTS & CONCLUSION data by humans. The figure shows a disagreement map provided by Geo-Wiki.org where the land cover determined by remote sensing projects disagrees. players to contribute in the deter- mination of global land cover. Technische Universität Wien Institut für Computergraphik und Algorithmen Arbeitsbereich Computergraphik Betreuung: Associate Prof. Dipl.-Ing Dipl.-Ing Dr.techn. Michael Wimmer Mitwirkung: Tobias Sturn, MSc Start screen of the game Tower defense part Categorization by painting Help screen Land cover disagreement map User interface - Geo-Wiki.org Comparison: Landspotting - Geo-Wiki.org Overlapping cropland surface in both projects Overlapping grass surface in both projects Remote sensing of land cover has, not at least because of the growing world population and the climate change, gained scientific impor- tance. International projects like GLC-2000 (JRC), MODIS (NASA) and GlobCover (ESA) aim to determine global land cover but the results show significant differences. The validation of this data is an impor- tant task to improve remote sensing of the global land cover. The goal of our project is to validate this The crowdsourcing project Geo- Wiki.org examines the results of the remote sensing projects GLC-2000, Modis and GlobCover and tries to validate them with the help of volunteers. The users are encouraged to recognize the land cover on satellite images from Google-Earth. To motivate volunteers to partici- pate is one of the main problems within Geo-Wiki. Using a serious game our project aims to motivate Landspotting is a project which aims to develop serious games for land cover classification. This thesis focuses on the development of a computer game for the tablet computer iPad that implements the classification of land cover as an integral part. The developed serious game Landspotting combines game mechanics of a tower defense game with land cover classification. As a part of the game users have to paint the land cover of satellite images on the screen of the devices. Each brush they use represents a certain category of land cover. The better the painted categorization fits to reference data, the better the progress in the tower defense game. The evaluation of the results showed that 74,2% of categorizations carried out by players are correct. The figures below show overlaping regions in both projects. We came to the result, that it is more difficult for humans to distinguish categories like grass or shrubs from other types of land cover while categories like cropland or water are easy to determine. The developed serious game Landspotting proves that computer games have a huge potential to improve global land cover. The computer game Landspotting was published on the 4th of January 2013 on the Apple App Store. To date 1543 categorizations were performed by players. In total 6172 km² of land cover have been categorized with the serious game. The results have been analyzed and compared with results provided by the Geo-Wiki.org project. Landspotting - A serious game to determine the global land cover

Games with a Purpose - TU Wien · tower defense game with land cover classi˜cation. As a part of the game users have to paint the land cover of satellite images on the screen of

Download PDF Report

Upload
others
View
0
Download
0

Embed Size (px)

Citation preview

Page 1: Games with a Purpose - TU Wien · tower defense game with land cover classi˜cation. As a part of the game users have to paint the land cover of satellite images on the screen of

Masterstudium:Medieninformatik

Diplomarbeitspräsentation

Dietmar Pangerl

Games with a PurposeDesign and implementation of a serious game to

determine global land cover

Kontakt: [email protected] | [email protected] | [email protected]

ProblemstellungPROBLEM STATEMENT GEO-WIKI

A SERIOUS GAME FOR GLOBAL LAND COVER CLASSIFICATION

RESULTS & CONCLUSION

data by humans. The �gure shows a disagreement map provided by Geo-Wiki.org where the land cover determined by remote sensing pro-jects disagrees.

players to contribute in the deter-mination of global land cover.

Technische Universität WienInstitut für Computergraphik und Algorithmen

Arbeitsbereich ComputergraphikBetreuung: Associate Prof. Dipl.-Ing Dipl.-Ing Dr.techn. Michael Wimmer

Mitwirkung: Tobias Sturn, MSc

Start screen of the game Tower defense part Categorization by painting Help screen

Land cover disagreement map User interface - Geo-Wiki.org

Comparison: Landspotting - Geo-Wiki.org Overlapping cropland surface in both projects Overlapping grass surface in both projects

Remote sensing of land cover has, not at least because of the growing world population and the climate change, gained scienti�c impor-tance. International projects like GLC-2000 (JRC), MODIS (NASA) and GlobCover (ESA) aim to determine global land cover but the results show signi�cant di�erences. The validation of this data is an impor-tant task to improve remote sen-sing of the global land cover. The goal of our project is to validate this

The crowdsourcing project Geo-Wiki.org examines the results of the remote sensing projects GLC-2000, Modis and GlobCover and tries to validate them with the help of vo-lunteers. The users are encouraged to recognize the land cover on sa-tellite images from Google-Earth. To motivate volunteers to partici-pate is one of the main problems within Geo-Wiki. Using a serious game our project aims to motivate

Landspotting is a project which aims to develop serious games for land cover clas-si�cation. This thesis focuses on the development of a computer game for the tablet computer iPad that implements the classi�cation of land cover as an integral part. The developed serious game Landspotting combines game mechanics of a tower defense game with land cover classi�cation. As a part of the game users have to paint the land cover of satellite images on the screen of the devices. Each brush they use represents a certain category of land cover. The better the painted catego-rization �ts to reference data, the better the progress in the tower defense game.

The evaluation of the results showed that 74,2% of categorizations carried out by players are correct. The �gures below show overlaping regions in both projects. We came to the result, that it is more di�cult for humans to distinguish categories like grass or shrubs from other types of land cover while categories like cropland or water are easy to determine. The develo-ped serious game Landspotting proves that computer games have a huge potential to improve global land cover.

The computer game Landspotting was published on the 4th of January 2013 on the Apple App Store. To date 1543 categorizations were performed by players. In total 6172 km² of land cover have been categorized with the serious game. The results have been analyzed and compared with results provided by the Geo-Wiki.org project.

Landspotting -A serious game to determine the global land cover