A Hybrid Visual Cryptography Method using Sigmoid Function for Security Enhancement in Gray Scale Images. Indian Journal of Artificial Intelligence and Neural Networking (IJAINN), [S. l.], v. 1, n. 3, p. 7–11, 2023. DOI: 10.54105/ijainn.B1026.061321. Disponível em: https://www.journals.latticescipub.com/index.php/ijainn/article/view/166.. Acesso em: 1 may. 2025.