S.T.Premkumar, S.Senthilnathan, and B.Jagdishkumar. “A DISCUSSION ON IMAGE ENHANCEMENT USING HISTOGRAM EQUALIZATION BY VARIOUS METHODS”. International Journal of Intellectual Advancements and Research in Engineering Computations, vol. 1, no. 2, Dec. 2013, pp. 44-48, https://ijiarec.com/ijiarec/article/view/1243.