1. Wang Qi, Chen Linqiang, Liang Xu. Caption extraction in video image [J], computer engineering and application, 2012, 48 (5): 177–216.
2. C.P. Sumathi, T. Santhanam, and G. Gayathri Devi, “Survey on various approaches of text extraction in im-ages,” International Journal of Computer Science & En-gineering Survey, vol. 3, pp. 803–806, August 2012.
3. Cao Xixin, Liu Jing, Yang Xudong, Wu handsome, Zhang Qihui. A new video caption extraction algorithm [J]. Journal of Peking University (NATURAL SCIENCE EDITION), 2013,49 (2): 197–202.
4. Alvaro Gonzalez, Luis M. Bergasa, J. Javier Yebes, Sebastian Bronte, “Text Location in Complex Images”, 21st International Conference on Pattern Recognition (ICPR2012), November 11–15, 2012. Tsukuba, Japan, pp. 617–620.
5. H. Chen, S. Tsai, G. Schroth, D. Chen, R. Grzeszczuk, and B. Girod. Robust text detection in natural images with edge-enhanced maximally stable extremal regions. In ICIP, 2011.