Identification of point sources in gamma rays using U-shaped convolutional neural networks and a data challengeBoris Panes, Christopher Eckner, Luc Hendriks, Sacha Caron, Klaas Dijkstra, Guðlaugur Jóhannesson, Roberto Ruiz de Austri and Gabrijela ZaharijasA&A, 656 (2021) A62DOI: https://doi.org/10.1051/0004-6361/202141193