Improved Robust, Invisible Digital Image Watermarking Using Discrete Cosine Transform and PM. International Journal of Current Trends in Engineering and Technology, [S. l.], v. 11, n. 3, p. 19–24, 2025. Disponível em: https://ijctet.org/index.php/ijctet/article/view/15.. Acesso em: 28 jun. 2025.