FINGERPRINT IMAGE ENHANCEMENT USING MEDIAN SIGMOID FILTER. Jurnal Teknologi (Sciences & Engineering), [S. l.], v. 75, n. 4, 2015. DOI: 10.11113/jt.v75.5057. Disponível em: https://journals.utm.my/jurnalteknologi/article/view/5057.. Acesso em: 24 jan. 2025.