Authors: Liang Qiao, Shanghai Jiao Tong University

Description: A multi-class segmentation based method. The segmentation branch learns a 5-class-segmentation , including text region, head region, tail region, up&bottom region and background region. A connected-region of text class pixels corresponds to a text instance thanks to the exist of boundary classes. There are other two regression branches are used to location two key points on head region and tail region, respectively. The method does not need anchor and as efficient as EAST. But it is more robust to detect long text instance since the mechanism of locally regression.