KHAN, Rashid Ali; MINALLAH, Nasru. An Improved Blood Vessel Extraction Approach from Retinal Fundus Images Using Digital Image Processing: Blood Vessel Extraction rom Retinal Fundus Images. Proceedings of the Pakistan Academy of Sciences: A. Physical and Computational Sciences, [S. l.], v. 54, n. 2, 2021. Disponível em: https://www.ppaspk.org/index.php/PPAS-A/article/view/242. Acesso em: 5 dec. 2025.