Mustafa, W. A. ., H. . Yazid, and . M. . Jaafar. “A Systematic Review: Contrast Enhancement Based on Spatial and Frequency Domain”. Journal of Advanced Research in Applied Mechanics, vol. 28, no. 1, Nov. 2020, pp. 1-8, https://akademiabaru.com/submit/index.php/aram/article/view/1769.