1. Bandara, A., and P. Giragama. 2017. A retinal image enhancement technique for blood vessel segmentation algorithm. In 2017 IEEE international conference on industrial and information systems (ICIIS), 1–5, IEEE.
2. Bedi, S., and R. Khandelwal. 2013. Various image enhancement techniques—A critical review. International Journal of Advanced Research in Computer and Communication Engineering 2 (3).
3. Choudhary, R., and S. Gawade. 2016. Survey on image contrast enhancement techniques. International Journal of Innovative Studies in Sciences and Engineering Technology 2 (3): 21–25.
4. Jordan, K.C., M. Menolotto, N.M. Bolster, I.A. Livingstone, and M.E. Giardini. 2017. A review of feature-based retinal image analysis. Expert Review of Ophthalmology 12 (3): 207–220.
5. Kapoor, K., and S. Arora. 2015. Colour image enhancement based on histogram equalization. Electrical & Computer Engineering: An International Journal 4 (3): 73–82.