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iapr

Symbol recognition is one of the central problems of Graphics Recognition. A lot of symbol recognition methods can be found in the literature. However, they are generally very ad-hoc and domain dependent methods. it is necessary to define sound performance evaluation methods to compare them. GREC'2003 was a good framework to start a work on symbol recognition evaluation. Following this link, you can download the ground truth used in the Symbol Recognition contest.

http://www.cvc.uab.es/Grec2003/SymRecContest/