• A Model of Visual Opacity for Translucent Colorants 

      Midtfjord, Helene B.; Green, Philip John; Nussbaum, Peter (Journal article; Peer reviewed, 2018)
      Potential methods for predicting the visual impression of the opacity of translucent white ink were evaluated. An experiment was conducted to collect visual data for white ink coatings on three different substrates: white ...
    • Appearance Characterization of Textiles 

      Conni, Michele (Doctoral theses at NTNU;2022:10, Doctoral thesis, 2022-01-13)
      The appearance of an object is the combination of the physical attributes that influence the human visual perception of the object itself. The most prominent of these attributes are colour, gloss, translucency and texture. ...
    • 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 ...
    • 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, ...
    • CCAD: A Basic Sample Database for Modeling Common Color Appearance 

      Yuan, Jiangping (Master thesis, 2016-08-30)
      The consistency assessment of a set of cross-media color reproductions is an urgent research topic in color application field. This is enhanced by the various gamut devices which make it impossible to match exactly using ...
    • Classification of forensic hyperspectral paper data using hybrid spectral similarity algorithms 

      D, Deepthi; Melit Devassy, Binu; George, Sony; Nussbaum, Peter; Tessamma, Thomas (Peer reviewed; Journal article, 2022)
      Document forgeries that involve modification of the materials used, such as ink and paper, provide evidence of any malpractices being performed. Forensic specialists use different techniques to identify and classify these ...
    • The effect of camera calibration on multichannel texture classification 

      Conni, Michele; Nussbaum, Peter; Green, Philip John (Peer reviewed; Journal article, 2021)
      Abstract The efficiency of a texture classification procedure depends on the color space in which it is performed. Classification in a perceptually meaningful space requires chromatic coordinates obtained from a calibrated ...
    • Estimating visual difference between reproduction gamuts: moving our pilot study from the lab to online delivery 

      High, Gregory Paul; Nussbaum, Peter; Green, Philip John (Chapter, 2021)
      Images reproduced for different output devices are known to be limited in the range of colours that can be reproduced. It is accepted that reproductions made with different print processes, and on different substrates, ...
    • Estimation of BRDF Measurements for Printed Colour Samples 

      Habib, Syeda Tanzima; Green, Philip John; Nussbaum, Peter (Journal article; Peer reviewed, 2021)
      In this paper, we describe a method to estimate BRDF measurements for different printed colours, using just the BRDF measurements of the substrate and the primary inks. A model is trained using the BRDF measurements of the ...
    • 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 ...
    • How accurate is an online test for colour vision deficiency? 

      Gjærde, Kari Bjerke; Kvitle, Anne Kristin; Green, Philip John; Nussbaum, Peter (Journal article, 2021)
      This study explores the accuracy and specificity of an on-line version of a standardized colour vision deficiency test – the Hardy-Rand-Rittler test (HRR) performed in an uncontrolled environment. A group of 25 observers ...
    • Initial findings on changing the background in pseudo-isochromatic charts 

      Reiner, Eschbach; Nussbaum, Peter (Peer reviewed; Journal article, 2022)
      Color vision deficiency is a common affliction for males, impacting about 8% of the population. The effects of this – colloquial – color blindness is the inability or limited ability to distinguish colors. A typical problem ...
    • Measurement and rendering of complex non-diffuse and goniochromatic packaging materials 

      Sole, Aditya Suneel; Guarnera, Giuseppe Claudio; Farup, Ivar; Nussbaum, Peter (Peer reviewed; Journal article, 2020)
      Realistic renderings of materials with complex optical properties, such as goniochromatism and non-diffuse reflection, are difficult to achieve. In the context of the print and packaging industries, accurate visualisation ...
    • Medicine Reminder System 

      Napirca, Alin Mihai; Ditman, Thomas Øvsttun (Bachelor thesis, 2023)
      Medisin er en viktig del av det moderne samfunnet. Medisin gjør alt fra forebygging av livstruende sykdommer, til vitamin tilskudd. Shortcut kom til oss med et ønske om å skape en løsning til et vanlig problem, nemlig å ...
    • Methods for psychophysical assessment of colour difference by observers with a colour vision deficiency 

      Kvitle, Anne Kristin; Oddløkken, Henrik; Green, Philip John; Nussbaum, Peter (Chapter, 2018)
    • Non-standard colorimetry in ICC colour management 

      Nussbaum, Peter; Kresović, Milan; Green, Philip John (Peer reviewed; Journal article, 2022)
      In ICC v4 colour management, data is exchanged between different colour encodings via a fixed Profile Connection Space (PCS), in which colorimetry is based on the D50 illuminant, and the CIE 1931 standard observer. According ...
    • Proceedings from Gjøvik Color Imaging Symposium 2007 

      Hardeberg, Jon Yngve; Nussbaum, Peter; Pedersen, Marius (Høgskolen i Gjøviks rapportserie;, Research report, 2007)
    • Quality of color coding in maps for color deficient observers 

      Kvitle, Anne Kristin; Pedersen, Marius; Nussbaum, Peter (Journal article; Peer reviewed, 2016)
      For a color deficient observer, the quality of a map or other information design may be defined as the ability to extract features. As color is such important conveyor of information, the colors need to appear correct and ...
    • Svartelistede arter i vegkanten 

      Lundemo, Malene; Hagen, Anders Lunde (Bachelor thesis, 2023)
      Gjøvik kommune er selv ansvarlig for å opprettholde naturmangfoldet, noe som inkluderer bekjemping av svartelistede plantearter. Kommunen etterspurte en løsning fra oss som ville forenkle registreringen og dermed bekjempelsen ...