@inproceedings{li2008multi,
  title={Multi-polarity text segmentation using graph theory},
  author={Li, Jia and Tian, Yonghong and Huang, Tiejun and Gao, Wen},
  booktitle={2008 15th IEEE International Conference on Image Processing},
  pages={3008--3011},
  year={2008},
  organization={IEEE}
}