Mustafa LM, Hasan HR. A Novel Robust Approach of Optimized Hybrid Watermarking Scheme for Color Images Using DWT, DCT, Permutation, and PSO. Iraqi Journal of Science [Internet]. 2026 May 30 [cited 2026 Jul. 12];67(5):2975-93. Available from: https://ijs.uobaghdad.edu.iq/index.php/eijs/article/view/15152