M. Abduldaim, Areej, and Mohammed Qasim Hamid. “Robust Image Watermarking Based on QR Factorization and LWT”. International Journal of Engineering & Technology 7, no. 4 (March 28, 2019): 5358–5362. Accessed December 22, 2024. https://sciencepubco.com/index.php/ijet/article/view/23661.