Items where IIASA Author is "Perger, Christoph"

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Article

Zhao, Y., Feng, D., Yu, L., See, L., Fritz, S., Perger, C. & Gong, P. (2017). Assessing and Improving the Reliability of Volunteered Land Cover Reference Data. Remote Sensing 9 (10): e1034. DOI:10.3390/rs9101034.

Laso Bayas, J.C., Lesiv, M., Waldner, F., Schucknecht, A., Duerauer, M., See, L., Fritz, S., Fraisl, D., Moorthy, I., McCallum, I., Perger, C., Danylo, O., Defourny, P., Gallego, J., Gilliams, S., Akhtar, I.H., Baishya, S.J., Baruah, M., Bungnamei, K., Campos, A., Changkakati, T., Cipriani, A., Das, K., Das, K., Das, I., Davis, K.F., Hazarika, P., Johnson, B.A., Malek, Z., Molinari, M.E., Panging, K., Pawe, C.K., Pérez-Hoyos, A., Sahariah, P.K., Sahariah, D., Saikia, A., Saikia, M., Schlesinger, P., Seidacaru, E., Singha, K. & Wilson, J.W. (2017). A global reference database of crowdsourced cropland data collected using the Geo-Wiki platform. Scientific Data 4: e170136. DOI:10.1038/sdata.2017.136.

Laso Bayas, J.C., See, L., Perger, C., Justice, C., Nakalembe, C., Dempewolf, J. & Fritz, S. (2017). Validation of Automatically Generated Global and Regional Cropland Data Sets: The Case of Tanzania. Remote Sensing 9 (8): e815. DOI:10.3390/rs9080815.

See, L., Laso Bayas, J.C., Schepaschenko, D., Perger, C., Dresel, C., Maus, V., Salk, C., Weichselgartner, J., Lesiv, M., McCallum, I., Moorthy, I. & Fritz, S. (2017). LACO-Wiki: A New Online Land Cover Validation Tool Demonstrated Using GlobeLand30 for Kenya. Remote Sensing 9 (7): e754. DOI:10.3390/rs9070754.

Fritz, S., See, L., Perger, C., McCallum, I., Schill, C., Schepaschenko, D., Duerauer, M., Karner, M., Dresel, C., Laso-Bayas, J.-C., Lesiv, M., Moorthy, I., Salk, C.F., Danylo, O., Sturn, T., Albrecht, F., You, L., Kraxner, F. & Obersteiner, M. (2017). A global dataset of crowdsourced land cover and land use reference data. Scientific Data 4: p. 170075. DOI:10.1038/sdata.2017.75.

Schepaschenko, D., Shvidenko, A., Perger, C., Dresel, C., Fritz, S., Lakida, P.I., Mukhortova, L.V., Usoltsev, V.A., Bobkova, K.S., Osipov, A.F., Martynenko, O.V., Karminov, V.N., Ontikov, P.V., Schepaschenko, M.V. & Kraxner, F. (2017). Forest Biomass Observation: Current State and Prospective. Siberian Journal of Forest Science (4): 3-11. DOI:10.15372/SJFS20170401.

Laso Bayas, J.C., See, L., Fritz, S., Sturn, T., Perger, C., Dürauer, M., Karner, M., Moorthy, I., Schepaschenko, D., Domian, D. & McCallum, I. (2016). Crowdsourcing In-Situ Data on Land Cover and Land Use Using Gamification and Mobile Technology. Remote Sensing 8 (11): e905. DOI:10.3390/rs8110905.

Foody, G.M., See, L., Fritz, S., van der Velde, M., Perger, C., Schill, C., Boyd, D.S. & Comber, A. (2015). Accurate attribute mapping from volunteered geographic information: issues of volunteer quantity and quality. The Cartographic Journal 52 (4): 336-344. DOI:10.1080/00087041.2015.1108658.

See, L., Fritz, S., Perger, C., Schill, C., McCallum, I., Schepaschenko, D., Dürauer, M., Sturn, T., Karne, M., Kraxner, F. & Obersteiner, M. (2015). Harnessing the power of volunteers, the internet and Google Earth to collect and validate global spatial information using Geo-Wiki. Technological Forecasting and Social Change 98: 324-335. DOI:10.1016/j.techfore.2015.03.002.

Schepaschenko, D., See, L., Lesiv, M., McCallum, I., Fritz, S., Salk, C., Perger, C., Shvidenko, A., Albrecht, F., Kraxner, F., Dürauer, M. & Obersteiner, M. (2015). Development of a global hybrid forest mask through the synergy of remote sensing, crowdsourcing and FAO statistics. Remote Sensing of Environment 162: 208-220. DOI:10.1016/j.rse.2015.02.011.

See, L., Schepaschenko, D., Lesiv, M., McCallum, I., Fritz, S., Perger, C., Vakolyuk, M., Schepaschenko, M., van der Velde, M., Kraxner, F. & Obersteiner, M. (2015). Building a hybrid land cover map with crowdsourcing and geographically weighted regression. ISPRS Journal of Photogrammetry and Remote Sensing 103: 48-56. DOI:10.1016/j.isprsjprs.2014.06.016.

Fritz, S., See, L., McCallum, I., Bun, A., Moltchanova, E., Dürauer, M., Perger, C., Havlik, P., Mosnier, A., Schepaschenko, D., van der Velde, M., Dunwoody, A., Kraxner, F. & Obersteiner, M. (2015). Mapping global cropland field size. Global Change Biology 21 (5): 1980-1992. DOI:10.1111/gcb.12838.

Perger, C., LeDrew, E., See, L. & Fritz, S. (2014). Geography Geo-Wiki in the classroom: Using crowdsourcing to enhance geographical teaching. Future Internet 6 (4): 597-611. DOI:10.3390/fi6040597.

Foody, G.M., See, L., Fritz, S., van der Velde, M., Perger, C., Schill, C. & Boyd, D.S. (2013). Assessing the accuracy of volunteered geographic information arising from multiple contributors to an Internet collaborative project. Transactions in GIS 17 (6): 847-860. DOI:10.1111/tgis.12033.

See, L., McCallum, I., Fritz, S., Perger, C., Kraxner, F., Obersteiner, M., Deka Baruah, U., Mili, N. & Ram Kalita, N. (2013). Mapping cropland in Ethiopia using crowdsourcing. International Journal of Geosciences 4 (6): 6-13. DOI:10.4236/ijg.2013.46A1002.

Comber, A., See, L., Fritz, S., van der Velde, M., Perger, C. & Foody, G. (2013). Using control data to determine the reliability of volunteered geographic information about land cover. International Journal of Applied Earth Observation and Geoinformation: 37-48. DOI:10.1016/j.jag.2012.11.002.

See, L., Comber, A., Salk, C.F., Fritz, S., van der Velde, M., Perger, C., Schill, C., McCallum, I., Kraxner, F. & Obersteiner, M. (2013). Comparing the quality of crowdsourced data contributed by expert and non-experts. PLoS ONE 8 (7): e69958. DOI:10.1371/journal.pone.0069958.

Fritz, S., See, L., van der Velde, M., Nalepa, R.A., Perger, C., Schill, C., McCallum, I., Schepaschenko, D., Kraxner, F., Vakolyuk, M., Albrecht, F., Shaw, B. & Obersteiner, M. (2013). Downgrading recent estimates of land available for biofuel production. Environmental Science & Technology 47 (3): 1688-1694. DOI:10.1021/es303141h.

Fritz, S., McCallum, I., Schill, C., Perger, C., See, L., Schepaschenko, D., van der Velde, M., Kraxner, F. & Obersteiner, M. (2012). Geo-Wiki: An online platform for improving global land cover. Environmental Modelling & Software DOI:10.1016/j.envsoft.2011.11.015.

Schepaschenko, D., Fritz, S., McCallum, I., Shvidenko, A., Perger, C., Schill, C., See, L., Kraxner, F. & Obersteiner, M. (2012). A platform to visualize, analyze and improve biomass datasets: http://biomass.geo-wiki.org. Folia Forestalia Polonica, Series A - Forestry 54 (2): 137-139.

Fritz, S., You, L., Bun, A., See, L., McCallum, I., Schill, C., Perger, C., Liu, J., Hansen, M. & Obersteiner, M. (2011). Cropland for sub-Saharan Africa: A synergistic approach using five land cover data sets. Geophysical Research Letters 38: L04404. DOI:10.1029/2010GL046213.

Fritz, S., McCallum, I., Schill, C., Perger, C., Grillmayer, R., Achard, F., Kraxner, F. & Obersteiner, M. (2009). Geo-Wiki.Org: The use of crowdsourcing to improve global land cover. Remote Sensing 1 (3): 345-354. DOI:10.3390/rs1030345.

Book Section

Schepaschenko, D., See, L., Perger, C., Hofer, M., Weichselbaum, J., Dresel, C. & Fritz, S. (2016). LACO-WIKI-A new open access online portal for land cover validation with high resolution imagery. In: Aerospace Methods and GIS Technologies in Forestry, Forest Management and Ecology: Proceedings of the VI All-Russian Conference. Eds. Ershov, D.V., Zhirin, V.M., Knyazeva, S.V., Eidlina, S.P., Korolyeva, N.V. & Gavrilyuk, E.A., pp. 74-79 Moscow: M. CEPF RAS. ISBN 978-5-9901791-7-2

See, L.inda, Fritz, S., Perger, C., Schill, C., Albrecht, F., McCallum, I., Schepaschenko, D., van der Velde, M., Kraxner, F., Baruah, U., Saikia, A., Singh, K., de Miguel, S., Hazarika, R., Sarkar, A., Marcarini, A., Baruah, M., Sahariah, D., Changkakati, T. & Obersteiner, M. (2016). Mapping Human Impact Using Crowdsourcing. In: Mapping Wilderness. Eds. Carver, S.J. & Fritz, S., pp. 89-101 Dordrecht, The Netherlands: Springer. ISBN 978-94-017-7397-3 DOI:10.1007/978-94-017-7399-7_6.

Arnold, S., Smith, G., Hazeu, G., Kosztra, B., Perger, C., Banko, G., Soukup, T., Strand, G.-H., Valcarcel Sanz, N. & Bock, M. (2015). The EAGLE concept: a paradigm shift in land monitoring. In: Land Use Cover and Land Cover Semantics. Principles, Best Practices, and Prospects. Eds. Fritz,, O Ahlqvist, D Varanka, S & (Eds.), K Janowicz, Boca Raton: CRC Press. ISBN 978-1-4822-3739-9 DOI:10.1201/b18746-7.

Schepaschenko, D., Kraxner, F., See, L., Fuss, S., McCallum, I., Fritz, S., Perger, C., Shvidenko, A., Kindermann, G., Frank, S., Tum, M., Schmid, E., Balkovič, J. & Guenther, K. (2015). Global biomass information: from data generation to application. In: Handbook of Clean Energy Systems. Eds. Yan, Jinyue, Chichester: Wiley. ISBN 9781118991978 DOI:10.1002/9781118991978.

See, L., Kraxner, F., Fuss, S., Perger, C., Schill, C., Aoki, K., Leduc, S., McCallum, I., Forsell, N. & Fritz, S. (2015). The potential of crowdsourcing for the renewable energy sector. In: Handbook of Clean Energy Systems. Eds. Yan, Jinyue, Chichester: Wiley. ISBN 9781118991978 DOI:10.1002/9781118991978.

Albrecht, F., Zussner, M., Perger, C., Durauer, M., See, L., McCallum, I., Fritz, S. & Kainz, W. (2014). Using student volunteers to crowdsource land cover information. In: GI_Forum 2014. Geospatial Innovation for Society – Conference Proceedings. Eds. Vogler, R., Car, A., Strobl, J. & Griesebner, G., pp. 314-317 Vienna, Austria: Austrian Academy of Sciences Press. ISBN 978-3-87907-545-4

See, L., Fritz, S., Perger, C., van der Velde, M., Albrecht, F., Schill, C., McCallum, I., Schepaschenko, D. & Obersteiner, M. (2013). Urban Geo-Wiki: A crowdsourcing tool for improving urban land cover. In: Citizen E-Participation in Urban Governance: Crowdsourcing and Collaborative Creativity. Eds. Silva, CN, Hershey: IGI Global. ISBN 9781466641709 DOI:10.4018/978-1-4666-4169-3.ch008.

Fritz, S., See, L., McCallum, I., Schill, C., Perger, C. & Obersteiner, M. (2011). Building a crowd-sourcing tool for the validation of urban extent and gridded population. In: Computational Science and Its Applications - ICCSA 2011. Eds. Murgante, B, Gervasi, O & Iglesias, A, Heidelberg: Springer. DOI:10.1007/978-3-642-21887-3_4.

Conference or Workshop Item

Moorthy, I., See, L., Fritz, S., McCallum, I., Perger, C., Dürauer, M., Dresel, C., Sturn, T., Karner, M., Schepaschenko, D., Lesiv, M., Danylo, O., Laso Bayas, J.C., Salk, C., Maus, V., Fraisl, D., Domian, D. & Mathieu, P.P. (2017). Crowd-driven tools for the calibration and validation of Earth Observation products. In: Earth Observation Open Science 2017 Conference, 25-28 September 2017, Frascati, Italy.

Aleksandrov, M., Batic, M., Milcinski, G., See, L., Perger, C., Moorthy, I. & Fritz, S. (2017). Crowdsourcing EO datasets to improve cloud detection algorithms and land cover change. In: Earth Observation Open Science 2017 Conference, 25-28 September 2017, Frascati, Italy.

Laso-Bayas, J.C., See, L., Fritz, S., Sturn, T., Karner, M., Perger, C., Dürauer, M., Mondel, T., Domian, D., Moorthy, I., McCallum, I., Shchepashchenko, D., Kraxner, F. & Obersteiner, M. (2016). Assessing the quality of crowdsourced in-situ land-use and land cover data from FotoQuest Austria application. In: European Geosciences Union (EGU) General Assembly 2016, 17–22 April 2016, Vienna, Austria.

See, L., Perger, C., Dresel, C., Hofer, M., Weichselbaum, J., Mondel, T. & Fritz, S. (2016). LACO-Wiki: A land cover validation tool and a new, innovative teaching resource for remote sensing and the geosciences. In: European Geosciences Union (EGU) General Assembly 2016, 17–22 April 2016, Vienna, Austria.

Fritz, S., See, L., Moorthy, I., McCallum, I., Perger, C., Shchepashchenko, D., Lesiv, M., Shvidenko, A., Salk, C., Dürauer, M., Karner, M., Sturn, T., Dresel, C., Domian, D., Dunwoody, A., Kraxner, F. & Obersteiner, M. (2015). The Role of Citizen Science and Crowdsourcing Tools in Supporting Systems Analysis at IIASA. In: Systems Analysis 2015 - A Conference in Celebration of Howard Raiffa, 11 -13 November, 2015, Laxenburg, Austria.

Schepaschenko, D., Lesiv, M., See, L., Fritz, S., Shvidenko, A., Perger, C., Dürauer, M., Kraxner, F., Schepaschenko, M. & McCallum, I. (2015). A citizen science application for improving the spatial distribution of global forests. In: XIV World Forestry Congress, 7-11 September 2015, Durban, South Africa.

See, L., Perger, C., Hofer, M., Weichselbaum, J., Dressel, C. & Fritz, S. (2015). LACO-WIKI: an open access online portal for land cover validation. In: ISPRS Geospatial Week 2015, 28 September-3 October 2015, Grande Motte, France.

See, L., Ching, J., Masson, V., Feddema, J., Mills, G., Neophytou, M., Foley, M., O'Connor, M., Milčinski, G., Repse, M., Perger, C., Dürauer, M., Fritz, S. & Bechtel, B. (2015). Generating WUDAPT’s Specific Scale - dependent Urban Modeling and Activity Parameters: Collection of Level 1 and Level 2 Data. In: ICUC9 - 9th International Conference on Urban Climate jointly with 12th Symposium on the Urban Environment, Touloouse, France.

Sturn, T., Wimmer, M., Salk, C., Perger, C., See, L. & Fritz, S. (2015). Cropland Capture – A Game for Improving Global Cropland Maps. In: Foundatoins of Digital Games, 22-25 June 2015, California.

Perger, C., Dürauer, M., Fritz, S., Bechtel, B., Ching, J., Alexander, P., Mills, G., Foley, M., O-Connor, M., Stewart, I., Feddema, J. & Masson, V. (2015). Developing a community-based worldwide urban morphology and materials database (WUDAPT) using remote sensing and crowdsourcing for improved urban climate modelling. In: Proceedings, JURSE 2015, 30 March 2015-1 April 2015.

See, L., Sturn, T., Perger, C., Fritz, S., McCallum, I. & Salk, C. (2014). Cropland Capture: A gaming approach to improve global land cover. In: Proceedings, AGILE 2014, "Connecting a Digital Europe through Location and Place, 3-6 June 2014.

Perger, C., McCallum, I., Albrecht, F., See, L., Fritz, S. & Thau, D. (2013). Improved cropland mapping in Ethiopia. In: GI_Forum 2013 - Creating the GISociety. Conference Proceedings.

Albrecht, F., Perger, C., Schill, C., See, L., McCallum, I., Collins, R. & Fritz, S. (2013). Using crowdsourcing to examine land acquisitions in Ethiopia. In: GI_Forum 2013 - Creating the GISociety. Conference Proceedings.

Perger, C., Fritz, S., See, L., Schill, C., van der Velde, M., McCallum, I. & Obersteiner, M. (2012). A campaign to collect volunteered geographic information and land cover and human impact. In: GI_Forum 2012: Geovizualisation, Society and Learning.

Fritz, S., Purgathofer, P., Kayali, F., Fellner, M., Sturn, T., Perger, C., Dürauer, M., Haberl, W., See, L. & McCallum, I. (2012). Landspotting: Social gaming to collect vast amounts of data for satellite validation. In: European Geosciences Union General Assembly 2012, 23 April 2012, Austria Center Vienna, Austria. (Unpublished)

Fritz, S., Perger, C., McCallum, I., Schepaschenko, D., See, L., van der Velde, M., Karner, M., Albrecht, F., Schill, C., Kraxner, F. & Obersteiner, M. (2012). Geo-Wiki.org: Harnessing the power of volunteers, the internet and Google Earth to collect and validate global spatial information. In: Worlds Within Reach: From Science To Policy - IIASA 40th Anniversary Conference, 24-26 October 2012, Hofburg Congress Center, Vienna and IIASA, Laxenburg, Austria.

Schepaschenko, D., Fritz, S., McCallum, I., Perger, C., Schill, C., Shvidenko, A., Kraxner, F. & Obersteiner, M. (2011). A platform to visualize, analyze and improve Biomass datasets: http://biomass.geo-wiki.org. In: CarboForest Conference, 21-23 September 2011.

Other

Schepaschenko, D., Lesiv, M., Fritz, S., See, L., Shvidenko, A., Perger, C., Kraxner, F. & Schepaschenko, M. (2015). Citizen science application for forestry. [[Book of Abstracts, International Scientific Conference - Forestry: Bridge to the Future]]; 6-9 May 2015, Sofia, Bulgaria pp.94-95 (May 2015)

Salk, C., Sturn, T., Fritz, S., See, L., Fuss, S., Perger, C., Dürauer, M., McCallum, I. & Obersteiner, M. (2014). Collecting, analyzing and assessing big land use data: Results from the cropland capture game. Presentation, [[AGU Fall Meeting]], 15-19 December 2014, San Francisco, CA, USA (2014)

Fritz, S., Nordling, J., See, L., McCallum, I., Perger, C., Becker-Reshef, I., Mucher, S., Bydekerke, L., Havlik, P., Kraxner, F. & Obersteiner, M. (2014). Towards the development and validation of a global field size and irrigation map using crowdsourcing, mobile apps and Google Earth engine in support of GEOGLAM. Presentation, [[AGU Fall Meeting]], San Francisco, CA, USA (December 2014)

Schepaschenko, D., See, L., Lesiv, M., Fritz, S., McCallum, I., Perger, C., Shvidenko, A., Kraxner, F. & Schepaschenko, M. (2014). Global forest map: exploring the synergy of remote sensing, crowd sourcing and statistics. Presentation, [[XXIV IUFRO Congress]], 5-11 October 2014, Salt Lake City, USA (2014)

Schepaschenko, D., Kraxner, F., See, L., Lesiv, M., Fritz, S., McCallum, I., Perger, C., Shvidenko, A. & Obersteiner, M. (2014). Towards a global biomass baseline map for the year 2000 to meet REDD(plus) policy requirements. Presentation, [[XXIV IUFRO Congress]], 5-11 October 2014, Salt Lake City, USA (2014)

Sturn, T., Perger, C., See, L., McCallum, I., Salk, C., Wimmer, M. & Fritz, S. (2014). Cropland Capture: an effective game for collecting VGI. Position Paper, [[Role of Volunteered Geographic Information in Advancing Science: Effective Utilization

Fritz, S., Sturm, T., See, L., Perger, C., Schill, C., McCallum, I., Schepaschenko, D., Karner, M., Dueruer, M., Kraxner, F. & Obersteiner, M. (2014). Cropland Capture: A game to improve global cropland through crowdsourcing. [[Geophysical Research Abstracts]], 16:EGU2014-2004

Schepaschenko, D., See, L., Lesiv, M., Fritz, S., McCallum, I., Perger, C., Shvidenko, A. & Kraxner, F. (2013). Global hybrid forest mask: Synergy of remote sensing, crowd sourcing and statistics. AGU Fall Meeting 2013, ePoster B23D-0574 (9-13 December 2013)

Schepaschenko, D., See, L., Fritz, S., McCallum, I., Schill, C., Perger, C., Baccini, A., Gallaun, H., Kindermann, G., Kraxner, F., Saatchi, S., Obersteiner, M., Santoro, M., Schmullius, C., Shvidenko, A. & Schepaschenko, M. (2012). Observing forest biomass globally. [[Earthzine]], posted on 9 June 2012 in Articles, Earth Observation, Forest Resources Information

Schill, C., Diaz, L., Perger, C., Fritz, S., McCallum, I., Nativi, S., McInerney, D., See, L. & Craglia, M. (2012). Web 2 Tools to Improve Global Land Cover: Linking the EuroGEOSS Broker and Geo-Wiki. Poster presentation, EuroGEOSS Conference, 23-27 January 2012, Madrid, Spain

Fritz, S., Shchepashchenko, D., McCallum, I., Perger, C., Schill, C., Baccini, A., Gallaun, H., Kindermann, G., Obersteiner, M., Santoro, M., Schmullius, C. & Shvidenko, A. (2011). Observing terrestrial biomass globally: http://biomass.geo-wiki.org. AGU Fall Meeting 2011, Abstract B51C-0404 (December 2011)

McCallum, I., Fritz, S., Schill, C., Perger, C., Achard, F., Grillmayer, R., Koch, B., Kraxner, F., Obersteiner, M. & Quinten, M. (2010). Geo-Wiki.org: Harnessing the power of volunteers, the Internet and Google Earth to collect and validate global spatial information. [[Earthzine]], posted on 1 February 2010 in Articles, Earth Observation, Technology

Fritz, S., McCallum, I., Schill, C., Perger, C., Kraxner, F. & Obersteiner, M. (2009). Towards a geospatial Wikipedia (Abstract). [[Geophysical Research Abstracts]], 11:EGU2009-6977

This list was generated on Tue Oct 17 20:11:06 2017 UTC.

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