4170 20190409174637.0 POSTER-2019-0082 Delouille, Veronique Coronal holes detection using supervised classification 2018 2018-11-05 NO Hofmeister, Stefan Reiss, Martin Temmer, Manuela Mampaey, Benjamin ESWW 15, Leuven, Belgium veronique.delouille@observatoire.be CPOSTER