Browsing NOFIMA vitenarkiv by Author "Heia, Karsten"
Now showing items 1-20 of 61
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Applications of hyperspectral imaging for documenting smoltification and welfare in Atlantic salmon
Lindberg, Stein-Kato; Difford, Gareth Frank; Durland, Evan; Heia, Karsten; Alvestad, René; Burgerhout, Erik; Mota, Vasco C.; Striberny, Anja; Verstege, Gerhardus C.; Noble, Christopher (Lecture, 2022) -
Applications of hyperspectral imaging for documenting smoltification status and welfare in Atlantic salmon
Lindberg, Stein-Kato; Difford, Gareth Frank; Durland, Evan; Heia, Karsten; Alvestad, René; Burgerhout, Erik; Mota, Vasco C.; Striberny, Anja; Verstege, Gerhardus C.; Noble, Christopher (Lecture, 2022) -
Automatic quality control of internal defects in cod - results from hyperspectral, ultrasound and X-ray imaging
Heia, Karsten; Washburn, Kathryn Elisabeth; Skjelvareid, Martin Hansen (Nofima rapportserie, Research report, 2017)Three different technologies were evaluated for the detection of embedded defects in cod fillets: ultrasound, x-ray imaging and the interactance acquisition mode of hyperspectral imaging. Previous studies had demonstrated ... -
Automatic quantification of gaping in fish fillets using 3D imaging – preliminary results for haddock fillets – Final report
Skjelvareid, Martin Hansen; Heia, Karsten (Nofima rapportserie, Research report, 2018) -
Automatisk kvalitetsdifferensiering av laksefilet
Heia, Karsten; Sivertsen, Agnar Holten; Wold, Jens Petter; Ottestad, Silje; Böcker, Ulrike; Carlehög, Mats; Altintzoglou, Themistoklis; Sone, Izumi; Gundersen, Bjørn (Nofima rapportserie, Research report, 2012)Hovedfokus i dette arbeidet har vært differensiering av laksefilet basert på objektiv instrumentell måling av kvalitetsparametere. Farge og fargeutvikling er viktige kvalitetsparametere for differensiering, og i dette ... -
Bedøvelse og bløgging av fisk om bord i fartøy – Faglig sluttrapport
Tobiassen, Torbjørn; Hustad, Anette; Evensen, Tor Hatten; Ageeva, Tatiana Nikolaevna; Martinsen, Gustav; Joensen, Sjurdur; Olsen, Stein Harris; Heia, Karsten; Mejdell, Cecilie Marie (Nofima rapportserie, Research report, 2018)I forsøk 1 ble det sett på hvordan elbedøving eller slagmaskin etterfulgt av mellomlagring i underkjølt vann eller luft før bløgging påvirket restblod i fisken. Slag som metode ga en relativt flat utvikling av restblod i ... -
Blodtapping av torsk - bløggemetoder og tid før bløgging eller direktesløying
Akse, Leif; Joensen, Sjurdur; Heia, Karsten; Tobiassen, Torbjørn; Sivertsen, Agnar Holten; Wang, Pål Anders (Nofima rapportserie, Research report, 2012)Både bløggemetode og tid fra opptak av fisken til blodtapping starter har betydning for hvor godt utblødd fisken blir. Forsøket dokumenterer dette for vanlig anvendte bløggemetoder og for tider fra opptak til bløgging som ... -
Bløgging og holdbarhet på torsk
Tobiassen, Torbjørn; Heia, Karsten; Olsen, Stein Harris; Svalheim, Ragnhild Aven; Joensen, Sjurdur; Karlsen, Kine Mari; Skjelvareid, Martin Hansen; Stormo, Svein Kristian (Research report, 2016)Målsettingen med prosjektet var å undersøke henholdsvis: • Om stresset torsk får redusert koaguleringstid sammenlignet med ustresset torsk, og om dette kan påvirke graden av blodtømming. • Hvordan påvirker økt aktivitet/stress ... -
Characterization of vasskveite (water halibut) syndrome for automated detection
Ortega, Samuel; Ofstad, Ragni; Syed, Shaheen; Kranz, Mathias; Heia, Karsten; Anderssen, Kathryn Elizabeth (Peer reviewed; Journal article, 2023)In recent years, cases of vasskveite (water halibut) syndrome in halibut have been increasing. At the moment, there exists no way to screen for the syndrome immediately after capture, which is problematic for both exporters ... -
Desalting of dried salt-cured cod (Gadus morhua L.) without water renewal - 3D imaging of volume change
Lorentzen, Grete Elisabeth; Ageeva, Tatiana Nikolaevna; Heia, Karsten (Peer reviewed; Journal article, 2021)Desalting of dried salt-cured cod without water renewal with stirring every 12 h, and in stagnant water, was explored. Products of about 450 g were desalted for 96 h, followed by refrigerated storage in 120 h. During the ... -
Desalting of tails and loins of dried salt-cured saith by cooking
Lorentzen, Grete Elisabeth; Martinsen, Gustav; Heia, Karsten; Ageeva, Tatiana Nikolaevna (Nofima rapportserie, Research report, 2020)Before preparation of a meal from the dried salt-cured fish, reducing the salt content by soaking the fish into water is commonly applied. In Jamaica and in the Dominican Republic, however, the salt content is reduced by ... -
Detection of blood in fish muscle by constrained spectral unmixing of hyperspectral images
Skjelvareid, Martin Hansen; Heia, Karsten; Olsen, Stein Harris; Stormo, Svein Kristian (Peer reviewed; Journal article, 2017) -
Deteksjon av kveis i fiskemuskel. Evaluering av avbildene spektroskopi som metode
Heia, Karsten; Nilsen, Heidi (Nofima rapportserie, Research report, 2001)Kveis i fiskeprodukter er et estetisk problem. For å sikre trygg markedstilgang og å unngå reklamasjoner er det av stor betydning å kunne tilby kveisfrie produkter. For å finne og fjerne parasitter i hvitfisk har det derfor ... -
Differential response to air exposure in crowded and uncrowded Atlantic cod (Gadus morhua): Consequences for fillet quality.
Svalheim, Ragnhild Aven; Burgerhout, Erik; Heia, Karsten; Joensen, Sjúrður; Olsen, Stein Harris; Nilsen, Heidi; Tobiassen, Torbjørn (Journal article; Peer reviewed, 2019) -
Digital phenotyping of individual feed intake in Atlantic salmon (Salmo salar) with the X-ray method and image analysis
Difford, Gareth Frank; Hatlen, Bjarne; Heia, Karsten; Bæverfjord, Grete; Eckel, Bernhard; Gannestad, Kjellrun Hoås; Romarheim, Odd Helge; Lindberg, Stein-Kato; Norris, Ashie T.; Sonesson, Anna Kristina; Gjerde, Bjarne (Peer reviewed; Journal article, 2023) -
Digital scoring of welfare traits in Atlantic salmon (Salmo salar L.) - a proof of concept study quantifying dorsal fin haemorrhaging via hyperspectral imaging
Lindberg, Stein-Kato; Durland, Evan; Heia, Karsten; Noble, Christopher; Alvestad, René; Difford, Gareth Frank (Peer reviewed; Journal article, 2023) -
Early identification of mushy Halibut syndrome with hyperspectral image analysis
Ortega, Samuel; Lindberg, Stein-Kato; Olsen, Stein Harris; Anderssen, Kathryn Elizabeth; Heia, Karsten (Peer reviewed; Journal article, 2023)Mushy Halibut Syndrome (MHS) is a condition that appears in Greenland halibut and manifests itself as abnormally opaque, flaccid and jelly-like flesh. Fish affected by this syndrome show poor meat quality, which results ... -
Early identification of mushy Halibut syndrome with hyperspectral image analysis
Ortega, Samuel; Lindberg, Stein-Kato; Olsen, Stein Harris; Anderssen, Kathryn Elizabeth; Heia, Karsten (Journal article, 2023)Mushy Halibut Syndrome (MHS) is a condition that appears in Greenland halibut and manifests itself as abnormally opaque, flaccid and jelly-like flesh. Fish affected by this syndrome show poor meat quality, which results ... -
Effect of Codend Design and Postponed Bleeding on Hemoglobin in Cod Fillets Caught by Bottom Trawl in the Barents Sea Demersal Fishery
Jensen, Tonje Kristin; Tobiassen, Torbjørn Inge; Heia, Karsten; Møllersen, Kajsa; Larsen, Roger B.; Esaiassen, Margrethe (Peer reviewed; Journal article, 2022) -
Effect of the T90-codend on the catch quality of cod (Gadus morhua) compared to the conventional codend configuration in the Barents Sea bottom trawl fishery
Jensen, Tonje Kristin; Brinkhof, Jesse; Lindberg, Stein-Kato; Tobiassen, Torbjørn Inge; Heia, Karsten; Olsen, Stein Harris; Larsen, Roger B.; Esaiassen, Margrethe (Peer reviewed; Journal article, 2022)The aim of this study was to compare the catch quality of Northeast Atlantic cod (Gadus morhua) in the Barents Sea bottom trawl fishery caught using the conventional configuration (a sorting grid followed by a diamond mesh ...