TOÀN, Đỗ Năng. An algorithm to detect region and its implementation in automatic vectorizing process. <b>Journal of Computer Science and Cybernetics</b>, <i>[S. l.]</i>, v. 16, n. 1, p. 45–51, 2013. DOI: 10.15625/1813-9663/16/1/2850. Disponível em: https://jcc.vast.vn/jcc/article/view/2850. Acesso em: 4 nov. 2025.