Wiranata, Joshua Febrian, Sri Redjeki Pudjaprasetya, Pritta Etriana Putri, and Riski Kurniawan. “FFT - Based Watermarking for Copyright Protection of Color Image”. Journal of Applied Mathematics and Modelling 1, no. 1 (May 10, 2025): 1–10. Accessed January 16, 2026. https://ejournal.cibnusantara.org/jamm/article/view/1.