Browsing NTNU Open by Author "Randeberg, Lise Lyngsnes"
Now showing items 21-40 of 51
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Hyperspectral Analysis of Plastic Particles in the Ocean
Bogfjellmo, Silja (Master thesis, 2016)Huge amounts of plastics end up in the ocean each year. Some of the plastics are eaten by fish and birds, and can cause death. It is important to find an easy, fast and reliable method to detect the plastics, as a first ... -
Hyperspectral characterization of an in vitro wound model
Randeberg, Lise Lyngsnes; Hegstad, Janne-Lise A; Paluchowski, Lukasz A.; Milanic, Matija; Pukstad, Brita (Journal article; Peer reviewed, 2014)Wound healing is a complex process not fully understood. There is a need of better methods to evaluate the different stages of healing, and optical characterization is a promising tool in this respect. In this study ... -
Hyperspectral characterization of re‐epithelialization in an in vitro wound model
Bjorgan, Asgeir; Pukstad, Brita Solveig; Randeberg, Lise Lyngsnes (Peer reviewed; Journal article, 2020)In vitro wound models are useful for research on wound re‐epithelialization. Hyperspectral imaging represents a non‐destructive alternative to histology analysis for detection of re‐epithelialization. This study aims to ... -
Hyperspectral characterization of tissue in the SWIR spectral range: a road to new insight?
Randeberg, Lise Lyngsnes (Journal article; Peer reviewed, 2019)Hyperspectral imaging is a generic imaging modality allowing high spectral and spatial resolution over a wide wavelength range from the visible to mid-infrared. Short wavelength infrared (SWIR) hyperspectral imaging is ... -
Hyperspectral Fluorescence and Reflectance Imaging of Bacteria and Oral Mucosa - a feasibility study
Vevang, Ine Mari (Master thesis, 2016)Dental health is an area with many challenges, in which non-invasive techniques for diagnostics is of great interest. Spatially resolved spectroscopy using hyperspectral imaging may provide such a technique. This thesis ... -
Hyperspectral imaging for detection of arthritis: Feasibility and prospects
Milanic, Matija; Paluchowski, Lukasz A.; Randeberg, Lise Lyngsnes (Peer reviewed; Journal article, 2015)Rheumatoid arthritis (RA) is a disease that frequently leads to joint destruction. It has a high incidence rate worldwide, and the disease significantly reduces patients’ quality of life. Detecting and treating inflammatory ... -
Hyperspectral imaging for detection of cholesterol in human skin
Milanic, Matija; Bjorgan, Asgeir; Larsson, Marcus; Marraccini, Paolo; Strömberg, Tomas; Randeberg, Lise Lyngsnes (Journal article; Peer reviewed, 2015)Hypercholesterolemia is characterized by high levels of cholesterol in the blood and is associated with an increased risk of atherosclerosis and coronary heart disease. Early detection of hypercholesterolemia is necessary ... -
Hyperspectral imaging of atherosclerotic plaques in vitro
Larsen, Eivind La Puebla; Randeberg, Lise Lyngsnes; Olstad, Elisabeth; Haugen, Olav Anton; Aksnes, Astrid; Svaasand, Lars O. (Journal article; Peer reviewed, 2011)Vulnerable plaques constitute a risk for serious heart problems, and are difficult to identify using existing methods. Hyperspectral imaging combines spectral- and spatial information, providing new possibilities for precise ... -
Hyperspectral Imaging of In Vitro Wound Models from Human Skin
Haneberg, Ingvild Johanne Åsmundhavn (Master thesis, 2014)In vitro wounds from human skin have been analysed using hyperspectral imaging. The purpose of this research is to use hyperspectral imaging as a diagnosis tool for skin wounds. The imaging period was 22 days. The images ... -
Hyperspektral avbildning av in vitro sårmodeller fra menneskehud
Hegstad, Janne-Lise A (Master thesis, 2013)I denne oppgaven er det gjort hyperspektral avbildning av in vitro sårmodeller.Målet med oppgaven har vært å vise at hyperspektral avbildning er en teknikk somkan benyttes for å få økt innsikt i helingsprosessen til akutte ... -
Identification of Marine Plastics using Hyperspectral Imaging and Raman Spectroscopy
Stien, Andreas Ø. R.; Dahl, Emilie M. Hyrum (Master thesis, 2019)Dagens Næringsliv (DN) hadde følgende overskrift 28. Mai i år (forfatter: Jørn Aass); ”Alarmerende forskning: Plast i havet påvirker oksygenet vi puster inn”. Plastforsøpling påvirker havet, som igjen er en sentral del av ... -
Identification of Marine Plastics using Hyperspectral Imaging and Raman Spectroscopy
Dahl, Emilie M. Hyrum; Stien, Andreas Ø. R. (Master thesis, 2019)Dagens Næringsliv (DN) hadde følgende overskrift 28. Mai i år (forfatter: Jørn Aass); ”Alarmerende forskning: Plast i havet påvirker oksygenet vi puster inn”. Plastforsøpling påvirker havet, som igjen er en sentral del av ... -
Imaging of biological samples using UV light determination of fluorescence yield
Vala, Torbjørn (Master thesis, 2014)A procedure on how to extract intrinsic fluorescence, i.e. fluorescence only due to fluophores, out of biological samples by imaging is given. Measurement of fluorescence of biological tissue will generally be distorted ... -
Increasing Validity and Uncovering Utility in Machine Learning Studies: An Illustrative Approach to Essential Concepts and Procedures in Model Development and Assessment
Austnes, Bendik (Master thesis, 2021)De siste årene har det skjedd store fremskritt innen dyp læring. I takt med stadig økende tilgang på datakraft og brukervennelige maskinlæringsmetoder, har stadig flere forskningsdisipliner tatt i bruk dyp læring. Mange ... -
LED light source for hyperspectral fluorescence imaging
Tendenes, Nils Ove (Master thesis, 2012)This report deals with the possibility of creating a LED light source, to be used withhyperspectral fluorescence imaging. There are commercially available light sources thatcould be used, but they are expensive, they do ... -
Optical measurement of tissue perfusion changes as an alternative to electrocardiography for heart rate monitoring in Atlantic salmon (Salmo salar)
Svendsen, Eirik; Økland, Finn; Føre, Martin; Randeberg, Lise Lyngsnes; Finstad, Bengt; Olsen, Rolf Erik; Alfredsen, Jo Arve (Peer reviewed; Journal article, 2021)Background: Welfare challenges in salmon farming highlights the need to improve understanding of the fish’s response to its environment and rearing operations. This can be achieved by monitoring physiological responses ... -
Optoelectrical Sensors for Monitoring of Oxygen- and Phototherapy
Sjøholt, Adrian Bakke (Master thesis, 2016)This thesis is devoted to the design of two optoelectronic sensors systems to monitor the treatment of jaundice by phototherapy and conditions such as chronic obstructive pulmonary disease with oxygen therapy. ... -
Physics-informed and learning-based approaches to biomedical hyperspectral data analysis
Bjørgan, Asgeir (Doctoral theses at NTNU;2021:157, Doctoral thesis, 2021)The high spectral and spatial resolution of hyperspectral imaging makes it a promising imaging technique for a wide range of biomedical applications. A recurring challenge is the handling and processing of the large amounts ... -
Real-Time Noise Removal for Line-Scanning Hyperspectral Devices Using a Minimum Noise Fraction-Based Approach
Bjorgan, Asgeir; Randeberg, Lise Lyngsnes (Journal article; Peer reviewed, 2015)Processing line-by-line and in real-time can be convenient for some applications of line-scanning hyperspectral imaging technology. Some types of processing, like inverse modeling and spectral analysis, can be sensitive ... -
Registration in hyperspectral and multispectral imaging
Viste, Stig (Master thesis, 2017)Hyperspectral (HSI) and Multispectral (MSI) images consist of multiple images taken at different wavelengths (bands), often at different times. Analysis of these images require high accuracy of correlation between the ...