Xie, E., Y. Zang, S. Shao, G. Yu, C. Yao, and G. Li. “Scene Text Detection With Supervised Pyramid Context Network”. Proceedings of the AAAI Conference on Artificial Intelligence, vol. 33, no. 01, July 2019, pp. 9038-45, doi:10.1609/aaai.v33i01.33019038.