The Geo-Wiki Project is a global network of volunteers who wish to help improve the quality of global land cover maps. Since large differences occur between existing global land cover maps, current ecosystem and land-use science lacks crucial accurate data (e.g. to determine the potential of additional agricultural land available to grow crops in Africa). Volunteers are asked to review hotspot maps of global land cover disagreement and determine, based on what they actually see in Google Earth and their local knowledge, if the land cover maps are correct or incorrect. Their input is recorded in a database, along with uploaded photos, to be used in the future for the creation of a new and improved global land cover map.
Cropland Capture, a new game version of IIASA's long-running GeoWiki project, engages citizen scientists in global land cover research, helping researchers identify farmland around the world. These data are essential for understanding global food security, identifying yield gaps, and monitoring crops affected by droughts.
The Geo-Wiki Project is a global network of volunteers who wish to help improve the quality of global land cover maps. Since large differences occur between existing global land cover maps, current ecosystem and land-use science lacks crucial accurate data (e.g. to determine the potential of additional agricultural land available to grow crops in Africa). Volunteers are asked to review hotspot maps of global land cover disagreement and determine, based on what they actually see in Google Earth and their local knowledge, if the land cover maps are correct or incorrect. Their input is recorded in a database, along with uploaded photos, to be used in the future for the creation of a new and improved global land cover map.
Cropland Capture, a new game version of IIASA's long-running GeoWiki project, engages citizen scientists in global land cover research, helping researchers identify farmland around the world. These data are essential for understanding global food security, identifying yield gaps, and monitoring crops affected by droughts.
"Our current knowledge of where cropland is located is unbelievably poor," explains GeoWiki project leader, IIASA researcher Steffen Fritz. "The game will provide data that could help us improve that knowledge."
Fritz and colleagues will turn the data from the game into a new global cropland map, improved over previous versions by adding thousands of validated data points to current satellite maps, which have coarse resolution and limited national data.
To play the game, players look at satellite images of the Earth's surface and note whether they see cropland in the image or not. While this sort of validation can be computerized to some extent, people still perform better than computers. Previous research by the GeoWiki team, published in the journal PLOS ONE, showed that even non-experts can do a quality job of analyzing land-cover.
The game will be played for six months, with the top scorer each week named as weekly winner. The 25 weekly winners will be entered into a drawing at the end of the competition to win three big prizes: an Amazon Kindle, a brand new smartphone, and a tablet.