Automatic picture orientation detection based on classifier combination. - Yuejia Sun; Changsong Liu; Xiaoqing Ding; Zhigang Fan 001; Francis Tse (Imaging and Printing in a Web 2.0 World, 2011)

Document image orientation based on both text and image. - Yuejia Sun; Changsong Liu; Xiaoqing Ding; Zhigang Fan 001; Francis Tse (Imaging and Printing in a Web 2.0 World, 2012)

Text vectorization based on character recognition and character stroke modeling. - Zhigang Fan 001; Bingfeng Zhou; Francis Tse; Yadong Mu; Tao He (IMAWM, 2014)