StrucTexTv2: Masked Visual-Textual Prediction for Document Image Pre-training. - Yu, Yuechen; Li, Yulin; Zhang, Chengquan; Zhang, Xiaoqiang; Guo, Zengyuan; Qin, Xiameng; Yao, Kun; Han, Junyu; Ding, Errui; Wang, Jingdong (2023)