Luis von Ahn, Ruoran Liu, Manuel Blum. Peekaboom: a game for locating objects in images. In Rebecca E. Grinter, Tom Rodden, Paul M. Aoki, Edward Cutrell, Robin Jeffries, Gary M. Olson, editors, Proceedings of the 2006 Conference on Human Factors in Computing Systems, CHI 2006, Montréal, Québec, Canada, April 22-27, 2006. pages 55-64, ACM, 2006. [doi]
Abstract is missing.