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Lars H. Stien

Lars Helge Stien

Phone: 912 43 951
Visiting address: Forskningsstasjon Austevoll 5392 Storebø C.Sunds gt. 64 5817Bergen

Works with

I am currently working on an expert system for assessing fish welfare in aquaculture (www.imr.no/welfaremeter) and a schema for assessing salmon welfare (www.imr.no/swim). 

Curriculum Vitae

1995-2002: Ph.D. course: Applied digital image analysis, Centre for Image Analysis, Uppsala University, Sweden. Ph.D. course: Digital Microscopy and Image Analysis, University of Copenhagen. Candidatus Scientiarum, Faculty of Mathematics and Natural Sciences, Department of Informatics, University of Bergen. Thesis title: Automatic image analysis of salmon fillets (in Norwegian: Automatisk bildeanalyse av laksefileter).

2003-2006: Philosophiae doctor, Faculty of Mathematics and Natural Sciences, Department of Biology, University of Bergen. Thesis title: Application of Machine vision to quantify rigor development, colour and fat content in slaughtered fish. Course: Laboratory Animal Science for FELASA category C researchers, Faculty of medicine, University of Bergen.
2007: PhD Course on Statistical and Syntactic Pattern Recognition at Agder University College.

Employment, project management and participation
2006: Researcher III (no: forsker III), Department of Biology, University of Bergen.
2006-2008: Post doctor position at the Institute of Marine Research. Member of the ‘Fish Welfare in Aquatic Production’-group, later renamed to: ‘Animal welfare’-group. Main working areas: fish welfare, development of welfare assessment systems, statistical analysis and image analysis.
2008-: Researcher position at the Institute of Marine Research. Member of the ‘Animal welfare’-group. Main working areas: fish welfare, development of welfare assessment systems, statistical analysis and image analysis.

Selected publications

  • Stien, L. H., Hirmas, E., Bjørnevik, M., Karlsen, Ø., Nortvedt, R., Rørå, A. M. B., Sunde, J., Kiessling, A., 2005. The effects of stress and storage temperatureon the colour and texture of pre-rigor filleted farmed cod (Gadus morhua L.). Aquaculture Research 36, 1197-1206.
  • Stien, L. H., Suontama, J., Kiessling, A, 2006. Image analysis as a tool to quantify rigor contraction in pre-rigor-filleted fillets. Computers and Electronics in Agriculture 50, 109-120.
  • Stien, L. H., Amundsen, A. H., A., Mørkøre, T., Økland, S. N., Nortvedt, R., 2006. Instrumental colour analysis of Atlantic salmon (Salmo salar L.) muscle. Luten, J.B., Jacobsen, C., Bekaert, K., Sæbø, A., Oehlenschläger, J. (eds.), Seafood research from fish to dish – Quality, safety and processing of wild and farmed fish. Wageningen Academic Publishers, The Netherlands, pp. 525-539.
  • Kiessling, A, Stien L. H., Torslett, Ø., Suontama, J., Slinde, E., 2006. Effect of pre- and post-mortem temperature on rigor in Atlantic salmon muscle measured by four different techniques. Aquaculture 259, 390-402.
  • Stien, L. H., Manne, F., Ruohonen, K., Kause, A., 2006. Kiessling, A. Automated image analysis as a tool to quantify the colour and composition of rainbow trout (Oncorhynchus mykiss W.) cutlets. Aquaculture 261, 695-705.
  • Stien, L. H., Kiessling, A., Manne, F., 2007. Rapid estimation of fat content in salmon fillets by colour image analysis. Journal of Food Composition and Analysis 20, 73-79.
  • Notvedt, R., Espe, M., Gribbestad, I., Jørgensen, L., Karslen, Ø., Otterå, H., Rørå, M. B., Stien, L. H., Sørensen, L. H., 2007. High-quality Seafood Products based on Ethical and Sustainable Production. Thomassen, M., Gudding, R., Norberg, B., Jørgensen, L. (eds), Aquaculture Research: From cage to Consumption. The Research Council of Norway, Norway, pp. 28-44.
  • Stien, L. H., Bratland, S., Austevoll, I., Oppedal, F., Kristiansen, T., 2007. A video analysis procedure for assessing vertical fish distribution in aquaculture tanks. Aquaculture Engineering 37, 115-124.
  • Roth, B., Schelvis-Smit, R., Stien, L.H., Foss, A., Nortvedt, R., Imsland, A., 2007. Exsanguination of Turbot and the Effect on Fillet Quality Measured Mechanically, by Sensory Evaluation, and with Computer Vision. Journal of Food Science 72, 525-531.
  • Kause, A., Stien, L. H., Rungruangsak-Torrissen, K., Ritola, O., Ruohonen, K., Kiessling, A., 2008. Image analysis as a tool to facilitate selective breeding of quality traits in rainbow trout. Livestock Science 114, 315-324.
  • Bratland, A., Stien, L. H., Braithwaite, V. A., Juell, J.-E., Folkedal, O., Nilsson, J., Oppedal, F., Fosseidengen, J. E., Kristiansen, T. S., 2010. From fright to anticipation: using aversive light stimuli to train reward conditioning in Atlantic salmon (Salmo salar L.). Aquaculture International, 18: 991-1001.
  • Roth, B., Foss, A., Stien, L. H., Gunnarsson, S., Schelvis-Smit, R., Imsland, A., 2010. The influence of anaerobic muscle activity, maturation and season on the flesh quality of farmed turbot. Aquaculture International, 18:461-474
  • Nilsson, J., Kristiansen, T. S., Fosseidengen, J. E., Stien, L. H., Fernö, A. & van den Bos, R. 2010. Learning and anticipatory behaviour in a “sit-and-wait” predator: The Atlantic halibut. Behavioural Processes 83: 257–266
  • Roth, B., Nortvedt, R., Slinde, E., Foss, A., Grimsbø, E. and Stien L.H., 2010. Electrical stimulation of Atlantic salmon muscle and the effect on flesh quality, Aquaculture, 301, 85-90.
  • Kristiansen, T.S., Stien, L.H., Fosseidengen, J.E., Strand, E., Juell, J.-E., (in press). Voluntary responses and limits of tolerance to pressure reduction and swimbladder expansion in farmed Atlantic cod, Aquaculture International.
  • Oppedal, F., Dempster, T., Stien, L.H., (in press). Environmental drivers of Atlantic salmon behaviour in sea-cages: a review. Aquaculture.