The design of Photocity solved two problems that often arise in distributed data collection:
data validation and sampling.
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Figure 5.11: Photocity turned the potentially laborious task of collecting data(i.e.,
uploading photos) and turned it into a game.
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Figure 5.12: The Photocity game enabled researchers
and participants to create high-quality 3D models of buildings using photos uploaded by participants.
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In order to enable the targeted collection of large numbers of photos,
Kathleen Tuite and colleagues developed Photocity, a photo-uploading game.