1. Huang, H.M., Wang, X.J., Yi, Z.J., et al.: A character recognition based on feature extraction. J. Chongqing Univ. (Nat. Sci. Ed.) 23(1), 66–69 (200l)
2. Rui, T., Shen, C.L., Ding, J., et al.: Handwritten character recognition using principal component analysis. Mini-Microsyst. 26(2), 289–292 (2005)
3. Walid, R., Lasfar, A.: Handwritten digit recognition using sparse deep architectures. In: International Conference on Intelligent Systems: Theories & Applications, pp. 1–6. IEEE (2014)
4. David, B.: Character recognition using convolutional neural networks. In: Seminar Statistical Learning Theory University of Ulm Germany Institute for Neural Information Processing, pp. 2–5 (2006)
5. Lezoray, O., Cardot, H.: Cooperation of color pixel classification schemes and color watershed: a study for microscopic images. IEEE Trans. Image Process. 11(7), 783–789 (2002)