• A Computational Framework for Colour Metrics and Colour Space Transforms 

      Farup, Ivar (Journal article; Peer reviewed, 2016)
      An object-oriented computational framework for the transformation of colour data and colour metric tensors is presented. The main idea of the design is to represent the transforms between spaces as compositions of objects ...
    • Administrasjonssystem for datavitenskapsoppgaver 

      Aanesen, Johan; Klausen, Brede Fritjof; Danielsen, Svein Are (Bachelor thesis, 2019)
      Prosjektets mål har vært å lage et web basert system som simplifiserer oppgave innlevering og gjennomgang av andre sine oppgaver, dette erstatter den tidligere brukte organiseringen gjennom regneark. Gjennom bacheloren har ...
    • Administrasjonssystem for datavitenskapsoppgaver 

      Aanesen, Johan; Klausen, Brede Fritjof; Danielsen, Svein Are (Bachelor thesis, 2019)
      Prosjektets mål har vært å lage et web basert system som simplifiserer oppgave innlevering og gjennomgang av andre sine oppgaver, dette erstatter den tidligere brukte organiseringen gjennom regneark. Gjennom bacheloren har ...
    • An Evaluation of Colour-to-Greyscale Image Conversion by Linear Anisotropic Diffusion and Manual Colour Grading 

      Barba, Aldo; Farup, Ivar; Pedersen, Marius (Journal article; Peer reviewed, 2019)
      In the paper "Colour-to-Greyscale Image Conversion by Linear Anisotropic Diffusion of Perceptual Colour Metrics", Farup et al. presented an algorithm to convert colour images to greyscale. The algorithm produces greyscale ...
    • Appitude 

      Holden, Bent (Bachelor thesis, 2018)
      Denne oppgaven vil ta for seg utviklingen av en smarttelefon applikasjon. Applikasjonen sitt formål er å kunne se nærmere på bruk av eksterne sensorer til å måle og utlede statistiske verdier, fra en spesiell skiteknikk ...
    • Assessment and Design of Color Vision Deficiency Simulation and Daltonization Methods 

      Simon-Liedtke, Joschua Thomas (Doctoral theses at NTNU;2017:8, Doctoral thesis, 2017)
      Color vision in humans evolved because it improves behavioral responses related, for example, to the guidance of attention, object recognition and detection of emotional states. However, people with color vision deficiencies ...
    • Automatic EX-Inspection 

      Stordal, Cim (Bachelor thesis, 2018)
      Faulty electrical cables pose a signi cant and severe risk to both people and equipment, especially on oil rigs where electrical cables and highly combustible gases are separated by thin barriers. This thesis describes an ...
    • Bidirectional Reflectance Measurement and Reflection Model Fitting of Complex Materials Using an Image-Based Measurement Setup 

      Sole, Aditya Suneel; Farup, Ivar; Nussbaum, Peter; Tominaga, Shoji (Journal article; Peer reviewed, 2018)
      Materials with a complex visual appearance, like goniochromatic or non-diffuse, are widely used for the packaging industry. Measuring optical properties of such materials requires a bidirectional approach, and therefore, ...
    • Colour-to-greyscale image conversion by linear anisotropic diffusion of perceptual colour metrics 

      Farup, Ivar; Pedersen, Marius; Alsam, Ali (Chapter, 2018)
      We present an algorithm for conversion of colour images to greyscale. The underlying idea is that local perceptual colour differences in the colour image should translate into local differences in greylevel in the greyscale ...
    • Constructing an optimal circulating temperament based on a set of musical requirements 

      Farup, Ivar (Journal article; Peer reviewed, 2014)
      A novel parametric circulating temperament is presented using a constructive approach. The temperament is optimal with respect to a heuristically chosen set of musical requirements. It is parametric in the sense that the ...
    • Demosaicing of periodic and random colour filter arrays by linear anisotropic diffusion 

      Thomas, Jean-Baptiste; Farup, Ivar (Journal article; Peer reviewed, 2018)
      The authors develop several versions of the diffusion equation to demosaic color filter arrays of any kind. In particular, they compare isotropic versus anisotropic and linear versus non-linear formulations. Using these ...
    • Error reduction through post processing for wireless capsule endoscope video 

      Floor, Pål Anders; Farup, Ivar; Pedersen, Marius; Hovde, Øistein (Peer reviewed; Journal article, 2020)
      The wireless capsule endoscope (WCE) is a pill-sized device taking images, which are transmitting to an on-body receiver, while traveling through the digestive system. Since image data is transmitted through the human body, ...
    • Evaluating an image based multi-angle measurement setup using different reflection models 

      Sole, Aditya Suneel; Farup, Ivar; Nussbaum, Peter (Journal article; Peer reviewed, 2017)
      Image based measurement setups are widely used for multidirectional reflectance measurements of materials. Different reflection models are used to estimate the material reflectance. In this paper we use two commonly ...
    • Evaluating an image-based bidirectional reflectance distribution function measurement setup 

      Sole, Aditya Suneel; Farup, Ivar; Nussbaum, Peter; Tominaga, Shoji (Journal article; Peer reviewed, 2018)
      We evaluate an image-based multiangle bidirectional reflectance distribution function measurement setup by comparing it to measurements from two commercially available goniospectrophotometers. The image-based setup uses ...
    • Evaluating color vision deficiency daltonization methods using a behavioral visual-search method 

      Simon-Liedtke, Joschua Thomas; Farup, Ivar (Journal article, 2016)
      Daltonization methods are used to automatically improve color images for color-deficient people. A comparison of different daltonization methods, however, is still left undone. We propose a visual-search method to evaluate ...
    • Evaluation of Algorithms for the Determination of Color Gamut Boundaries 

      Bakke, Arne Magnus; Farup, Ivar; Hardeberg, Jon Yngve (Journal article; Peer reviewed, 2010)
      Several techniques for the computation of gamut boundaries have been presented in the past. In this article we take an in-depth look at some of the gamut boundary descriptors used when performing today's gamut mapping ...
    • Experimental comparison of face/non-face classifiers 

      Farup, Ivar; Hjelmås, Erik (Høgskolen i Gjøviks rapportserie, Research report, 2001)
      Most face detection algorithms can be divided into two sub-problems, initial visual guidance and face/ non-face classification. In this paper vi propose an evaluation protocol for face/ non-face classification and provide ...
    • Fargestyring i produksjon og presentasjon av digital video : forprosjektrapport til Prokom 

      Andresen, Sigmund; Farup, Ivar; Hardeberg, Jon Yngve; Korten, Jens Uwe; Skarsbø, Sven Erik; Stjernvang, Gudmund (Høgskolen i Gjøviks rapportserie, Research report, 2001)
      I denne forprosjektstudien har arbeidsgruppen fra HiL og HiG vurdert hvilke metoder som kan benyttes til fargestyring (color management) i digital video. På bakgrunn av litteraturstudier, drøftinger og simuleringer har ...
    • Gamut Mapping in RGB Colour Spaces with the Iterative Ratios Diffusion Algorithm 

      Gatta, Carlo; Farup, Ivar (Journal article; Peer reviewed, 2017)
      ifferent reproduction devices can have different sets of re-producible colours. These sets are called gamuts. The processof transforming colours from one device (or image) gamut to an-other is called gamut mapping. Gamut ...
    • Geodesic calculation of color difference formulas and comparison with the munsell color order system 

      Pant, Dibakar Raj; Farup, Ivar (Journal article; Peer reviewed, 2013)
      Riemannian metric tensors of color difference formulas are derived from the line elements in a color space. The shortest curve between two points in a color space can be calculated from the metric tensors. This shortest ...