2021. WATERMARK TECHNIQUE FOR AUTHENTICATION OF VISIBLY WATERMARK IMAGES. Journal of Al-Rafidain University College For Sciences ( Print ISSN: 1681-6870 ,Online ISSN: 2790-2293 ). 25, 2 (Oct. 2021), 121–138. DOI:https://doi.org/10.55562/jrucs.v25i2.447.