R. Nambiar, P. A, P. A, S. M Shirahatti, and P. Radhakrishna Dodmane, “Cloud Space Optimization by Preventing Similar Image Insertion Using Hashing Based on Feature Point”, IJET, vol. 7, no. 4.39, pp. 1042–1046, Dec. 2018, doi: 10.14419/ijet.v7i4.39.28358.