Sudha MS, Thanuja TC. Effect of different attacks on image watermarking using dual tree complex wavelet transform (DTCWT) and principle component analysis (PCA). IJET [Internet]. 2018 Mar. 19 [cited 2025 Apr. 21];7(2.9):1-5. Available from: https://www.sciencepubco.com/index.php/IJET/article/view/9249