attention U-Net. FRST. morphological operations. optic disc and vessel segmentation. OphthalmologyPirhala, Matej, 1997- Segmentation of significant regions in retinal images: perspective of U-Net network through a comparative approach / aut. Matej Pirhala, Jozef Goga, Veronika Kurilová, Jarmila Pavlovičová, Slavomír Kajan. Goga, Jozef, 1992. Kurilová, Veronika, 1986-. Pavlovičová, Jarmila, 1963-. Kajan, Slavomír, 1972- In: IWSSIP 2021. -- 1. ed.. -- 353 s.. -- 978-80-227-5112-4 International conference on Systems, Signals and Image Processing (IWSSIP 2021). -- Bratislava : Vydavateľstvo SPEKTRUM STU, 2021. -- [12] s.