SuperOCR for ALTA 2017 Shared Task Yufei Wang author 2017-12 text Proceedings of the Australasian Language Technology Association Workshop 2017 Jojo Sze-Meng Wong editor Gholamreza Haffari editor Brisbane, Australia conference publication wang-2017-superocr https://aclanthology.org/U17-1016/ 2017-12 124 128