Blar i NTNU Open på forfatter "Ellingsen, Pål Gunnar"
-
Hyperspectral analysis using the correlation between image and reference
Ellingsen, Pål Gunnar; Reitan, Nina Kristine; Pedersen, Brede Dille; Lindgren, Mikael (Journal article; Peer reviewed, 2013)We present the use of correlation analysis on spectral data in order to quantify the amount of a given spectrum present with respect to a reference spectrum. The method is shown to be useful in analyzing hyperspectral ... -
Mueller matrix three-dimensional directional imaging of collagen fibers
Ellingsen, Pål Gunnar; Aas, Lars Martin Sandvik; Hagen, Vegard Stenhjem; Kumar, Rajesh; Lilledahl, Magnus Borstad; Kildemo, Morten (Journal article; Peer reviewed, 2014)A method for measuring three-dimensional (3-D) direction images of collagen fibers in biological tissue is presented. Images of the 3-D directions are derived from the measured transmission Mueller matrix images (MMIs), ... -
Parametric model of the Mueller matrix of a Spectralon white reflectance standard deduced by polar decomposition techniques
Kildemo, Morten; Jerome, Maria; Ellingsen, Pål Gunnar; Aas, Lars Martin Sandvik (Journal article; Peer reviewed, 2013)Decomposition methods have been applied to in-plane Mueller matrix ellipsometric scattering data of the Spectralon reflectance standard. Data were measured at the wavelengths 532 nm and 1500 nm, using an achromatic optimal ... -
Polarimetric and hyperspectral imaging methods for characterisation of bio- and nanomaterials
Ellingsen, Pål Gunnar (Doktoravhandlinger ved NTNU, 1503-8181; 2014:238, Doctoral thesis, 2014)Presented here is the development of a time gated Raman spectrometer, a new method for designing polarimeters, testing of an overdetermined Mueller matrix imaging ellipsometer and Mueller matrix imaging of collagen fibre ... -
Quantitative characterization of articular cartilage using Mueller matrix imaging and multiphoton microscopy
Ellingsen, Pål Gunnar; Lilledahl, Magnus Borstad; Aas, Lars Martin Sandvik; Davies, Catharina De Lange; Kildemo, Morten (Journal article; Peer reviewed, 2011)The collagen meshwork in articular cartilage of chicken knee is characterized using Mueller matrix imaging and multiphoton microscopy. Direction and degree of dispersion of the collagen fibers in the superficial layer are ... -
Spectral correlation analysis of Amyloid beta plaque inhomogeneity from double staining experiments
Ellingsen, Pål Gunnar; Nyström, Sofie; Reitan, Nina Kristine; Lindgren, Mikael (Journal article; Peer reviewed, 2013)A spectral correlation algorithm for the analysis of hyperspectral fluorescence images is proposed by Ellingsen et al. [J. Biomed. Opt. 18, 020501 (2013)]. Here, it is applied to the analysis of double-stained Aβ amyloid ...