1. Otsu, N.: A threshold selection method from gray-level histograms. Automatica 11, 23–27 (1975)
2. Trier, O.D., Jain, A.K.: Goal-directed evaluation of binarization methods. IEEE Trans. Pattern Anal. Mach. Intell. 17, 1191–1201 (1995)
3. Wolf, C., Jolion, J.M.: Extraction and recognition of artificial text in multimedia documents. Formal Pattern Anal. Appl. 6, 309–326 (2004)
4. Chen, X., Yuille, A.L.: Detecting and reading text in natural scenes. In: Proceedings of the 2004 IEEE Computer Society Conference on Computer Vision and Pattern Recognition, CVPR 2004, vol. 2, pp. II–366. IEEE (2004)
5. Satish, M., Lajish, V., Kopparapu, S.K.: Edge assisted fast binarization scheme for improved vehicle license plate recognition. In: 2011 National Conference on Communications (NCC), pp. 1–5. IEEE (2011)