Blar i forfatter "Ortega, Samuel"

Viser treff 1-4 av 4

    • Characterization of vasskveite (water halibut) syndrome for automated detection 

      Ortega, Samuel; Ofstad, Ragni; Syed, Shaheen; Kranz, Mathias; Heia, Karsten; Anderssen, Kathryn Elizabeth (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-12-23)
      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 and purchasers. In this article, we compared good quality halibut and halibut exhibiting the syndrome using a variety of techniques. Hyperspectral imaging was used to quantify ...

    • Early Detection of Change by Applying Scale-Space Methodology to Hyperspectral Images 

      Uteng, Stig; Johansen, Thomas Haugland; Zaballos, Jose Ignacio; Ortega, Samuel; Holmström, Lasse; Callico, Gustavo M.; Fabelo, Himar; Godtliebsen, Fred (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-03-27)
      Given an object of interest that evolves in time, one often wants to detect possible changes in its properties. The first changes may be small and occur in different scales and it may be crucial to detect them as early as possible. Examples include identification of potentially malignant changes in skin moles or the gradual onset of food quality deterioration. Statistical scale-space methodologies ...

    • Recent advances in hyperspectral imaging for melanoma detection 

      Johansen, Thomas Haugland; Møllersen, Kajsa; Ortega, Samuel; Fabelo, Himar; Garcia, Aday; Callico, Gustavo; Godtliebsen, Fred (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-04-22)
      Skin cancer is one of the most common types of cancer. Skin cancers are classified as nonmelanoma and melanoma, with the first type being the most frequent and the second type being the most deadly. The key to effective treatment of skin cancer is early detection. With the recent increase of computational power, the number of algorithms to detect and classify skin lesions has increased. The overall ...

    • Teknologi for automatisk sortering av tørrfisk 

      Nilsen, Heidi; Ortega, Samuel; Nyrud, Thomas; Karlsen, Amanda Katrine; Lindberg, Stein-Kato; Heia, Karsten; Joensen, Sjúrður (Research report; Forskningsrapport, 2024-04-15)
      Tørking av fisk ute på hjell er en tradisjonell og mye brukt metode for konservering av fisk. Kvaliteten på sluttproduktet blir i stor grad avhengig av værforhold under tørking og kvaliteten på råstoffet som henges. Når fisken tørkes ute blir den utsatt for variasjon i temperatur, vind, sol og fuktighet. Til sammen gir dette en tørket og modnet fisk som har karakteristisk lukt, smak og konsistens. ...