Image Steganography Using Penalty Function Method and PSO . International Research Journal on Advanced Engineering Hub (IRJAEH), [S. l.], v. 3, n. 09, p. 3480–3486, 2025. DOI: 10.47392/IRJAEH.2025.0511. Disponível em: https://irjaeh.com/index.php/journal/article/view/1040.. Acesso em: 6 sep. 2025.