AL-SAFFAR, A. Remove regular noise from gray digital images using spatial filters. Journal of Education and Science, [S. l.], v. 27, n. 1, p. 169–179, 2014. DOI: 10.33899/edusj.2014.162140. Disponível em: https://edusj.uomosul.edu.iq/index.php/edusj/article/view/41436. Acesso em: 10 sep. 2025.