Browsing Brage IMR by Author "Salberg, Arnt-Børre"
Now showing items 1-10 of 10
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Acoustic classification in multifrequency echosounder data using deep convolutional neural networks
Brautaset, Olav; Waldeland, Anders Ueland; Johnsen, Espen; Malde, Ketil; Eikvil, Line; Salberg, Arnt-Børre; Handegard, Nils Olav (Peer reviewed; Journal article, 2020)Acoustic target classification is the process of assigning observed acoustic backscattering intensity to an acoustic category. A deep learning strategy for acoustic target classification using a convolutional network is ... -
Automatic Fish Age Determination across Different Otolith Image Labs Using Domain Adaptation
Ordonez, Alba; Eikvil, Line; Salberg, Arnt-Børre; Harbitz, Alf; Elvarsson, Bjarki Thor (Peer reviewed; Journal article, 2022)The age determination of fish is fundamental to marine resource management. This task is commonly done by analysis of otoliths performed manually by human experts. Otolith images from Greenland halibut acquired by the ... -
Deep Semi-Supervised Semantic Segmentation in Multi-Frequency Echosounder Data
Choi, Changkyu; Kampffmeyer, Michael; Jenssen, Robert; Handegard, Nils Olav; Salberg, Arnt-Børre (Peer reviewed; Journal article, 2023)Multi-frequency echosounder data can provide a broad understanding of the underwater environment in a non-invasive manner. The analysis of echosounder data is, hence, a topic of great importance for the marine ecosystem. ... -
Deep Semi-Supervised Semantic Segmentation in Multi-Frequency Echosounder Data
Choi, Changkyu; Kampffmeyer, Michael; Jenssen, Robert; Handegard, Nils Olav; Salberg, Arnt-Børre (Peer reviewed; Journal article, 2023)Multi-frequency echosounder data can provide a broad understanding of the underwater environment in a non-invasive manner. The analysis of echosounder data is, hence, a topic of great importance for the marine ecosystem. ... -
DeepOtolith v1.0: An Open-Source AI Platform for Automating Fish Age Reading from Otolith or Scale Images
Politikos, Dimitris V.; Sykiniotis, Nikolaos; Petasis, Georgios; Dedousis, Pavlos; Ordonez, Alba; Vabø, Rune; Anastasopoulou, Aikaterini; Moen, Endre; Mytilineou, Chryssi; Salberg, Arnt-Børre; Chatzispyrou, Archontia; Malde, Ketil (Peer reviewed; Journal article, 2022)Every year, marine scientists around the world read thousands of otolith or scale images to determine the age structure of commercial fish stocks. This knowledge is important for fisheries and conservation management. ... -
Estimation of harp seal pup production in the Greenland Sea using spatial analysis on aerial survey data
Salberg, Arnt-Børre; Stenson, Garry B.; Haug, Tore; Nilssen, Kjell Tormod (ICES CM documents, Working paper, 2005)From 14 March to 6 April 2002 aerial surveys were carried out in the Greenland Sea packice to assess the pup production of the Greenland Sea population of harp seals Pagophilus groenlandicus. One xed-wing twin-engined ... -
Estimation of hooded seal pup production in the Greenland Sea pack-ice during the 2005 whelping season
Haug, Tore; Nilssen, Kjell Tormod; Frie, Anne Kirstine; Lindblom, Lotta; Poltermann, Michael; Salberg, Arnt-Børre; Skavberg, Nils Erik; Fagerheim, Kjell Arne ([Toktrapport/Havforskningsinstituttet];Nr. 10 - 2005, Working paper, 2005) -
Estimation of Pup Production of Hooded and Harp Seals in the Greenland Sea in 2007: Reducing Uncertainty Using Generalized Additive Models
Øigård, Tor Arne; Haug, Tore; Nilssen, Kjell Tormod; Salberg, Arnt-Børre (Journal article; Peer reviewed, 2010-02-11)The pup production of the Greenland Sea populations of hooded and harp seals were assessed in aerial surveys using two aircrafts for reconnaissance flights and photographic surveys along transects over the whelping areas ... -
Explaining decisions of deep neural networks used for fish age prediction
Ordonez, Alba; Eikvil, Line; Salberg, Arnt-Børre; Harbitz, Alf; Murray, Sean Meling; Kampffmeyer, Michael (Peer reviewed; Journal article, 2020)Age-reading of fish otoliths (ear stones) is important for the sustainable management of fish resources. However, the procedure is challenging and requires experienced readers to carefully examine annual growth zones. In ... -
Separation of Norwegian coastal cod and Northeast Arctic cod by otolith morphometry
Stransky, Christoph; Baumann, Hannes; Fevolden, Svein-Erik; Harbitz, Alf; Høie, Hans; Nedreaas, Kjell Harald; Salberg, Arnt-Børre; Skarstein, Tuula H. (ICES CM documents;2007/L:10, Working paper, 2007)For stock assessment purposes, Atlantic cod (Gadus morhua) from the coastal and offshore regions off northern Norway is usually allocated to Norwegian coastal cod (NCC) and Northeast Arctic cod (NEAC) by internal ...