Determining the boundaries of grayscale image. Mathematical Machines and Systems, [S. l.], n. 4, p. 52–64, 2019. DOI: 10.34121/1028-9763-2019-4-52-64. Disponível em: https://www.j-mms.de/index.php/mms/article/view/2019-4-a5. Acesso em: 11 aug. 2026.