A Novel Deep Multi-Image Object Detection Approach for Detecting Alien Barleys in Oat Fields Using RGB UAV Images. - Ehsan Khoramshahi; Roope Näsi; Stefan Rua; Raquel Alves Oliveira; Axel Päivänsalo; Oiva Niemeläinen; Markku Niskanen; Eija Honkavaara (Remote. Sens., 2023)