PERBANDINGAN KUALITAS CITRA GRAYSCALE STEGANOGRAFI METODE LSB DAN DCT BERDASARKAN PSNR DAN SSIM. Journal of Information System Management (JOISM), [S. l.], v. 7, n. 2, p. 330–337, 2026. DOI: 10.24076/joism.2026v7i2.2492. Disponível em: https://jurnal.amikom.ac.id/index.php/joism/article/view/2492. Acesso em: 4 feb. 2026.