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dc.contributor.authorKim, Ekaterina
dc.contributor.authorPanchi, Nabil
dc.contributor.authorDahiya, Gurvinder
dc.identifier.citationJournal of Physics: Conference Series. 2019, 1357 .nb_NO
dc.description.abstractShip traffic in ice exposed areas is increasing, and ice navigation is largely a manual task. Despite the progress in machine learning and computer vision algorithms, little focus has been given to computer-aided scene understanding in icy waters to help modernize navigational support systems. This work lays the foundation for the automated identification of ice for surface vessels using modern deep learning (DL) algorithms. The focus is on locating and classifying multiple ice objects within images from a surface vessel travelling through icy waters. The following categories of surface ice features are considered: level-ice, deformed ice, broken-ice, icebergs, floebergs, floebits, icefloes, pancake-ice, and brash-ice. In the first phase, we used DL algorithms to classify the ice objects in an image. For this task, seven state-of-the-art residual network (ResNet) models have been tested and include ResNet18, ResNet34, ResNet50, SE_ResNet50, Xception-Cadene, Inception-v4, and Inception-ResNet-v2. During the second phase, we used DL algorithms to locate and classify ice objects. For these tasks, we used the UNet architecture combined with conditional random fields (CRFs) and analysed the effects of using fully connected CRF and convolutional CRF. We have trained and validated the models using the close-range optical ice imagery, and then the promising models were used to classify and locate the different ice features in images from the bridge of the US Coast Guard icebreaker Healy and the nuclear-powered icebreaker 50 Let Pobedy. This paper provides the main findings and lessons that were learned from the execution of this study.nb_NO
dc.publisherIOP Publishingnb_NO
dc.rightsNavngivelse 4.0 Internasjonal*
dc.titleTowards automated identification of ice features for surface vessels using deep learningnb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.source.journalJournal of Physics: Conference Seriesnb_NO
dc.description.localcodeContent from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.nb_NO
cristin.unitnameInstitutt for marin teknikk

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