ICDAR 2003 robust reading competitions: entries, results, and future directions.
Simon M. LucasAlex PanaretosLuis SosaAnthony TangShirley WongRobert YoungKazuki AshidaHiroki NagaiMasayuki OkamotoHiroaki YamamotoHidetoshi MiyaoJunMin ZhuWuWen OuChristian WolfJean-Michel JolionLeon TodoranMarcel WorringXiaofan LinPublished in: Int. J. Document Anal. Recognit. (2005)