• A Colour Appearance Model based on Jzazbz Colour Space 

      Safdar, Muhammad; Hardeberg, Jon Yngve; Kim, Youn Jin; Luo, Ming Ronnier (Journal article; Peer reviewed, 2018)
      The current CIE colour appearance model CIECAM02 and its variant named CAM16 can well predict common colour appearance attributes including lightness, brightness, chroma, colowfulness, saturation, hue angle, and hue ...
    • An Adaptive Combination of Dark and Bright Channel Priors for Single Image Dehazing 

      Whannou De Dravo, Vincent Jacob; El Khoury, Jessica; Thomas, Jean-Baptiste; Mansouri, Alamin; Hardeberg, Jon Yngve (Journal article; Peer reviewed, 2017)
      Dehazing methods based on prior assumptions derived from statistical image properties fail when these properties do not hold. This is most likely to happen when the scene contains large bright areas, such as snow and sky, ...
    • Analytical Survey of Highlight Detection in Color and Spectral Images 

      Khan, Haris Ahmad; Thomas, Jean-Baptiste; Hardeberg, Jon Yngve (Chapter, 2017)
      Detection of highlights is a prominent issue in computer vision, graphics and image processing. Applications which require object properties measurement or rendering are affected by specular reflection since the models ...
    • Assessing the Quality of Videoconferencing: from Quality of Service to Quality of Communication 

      Shahid, Mohammed; Abebe, Mekides Assefa; Hardeberg, Jon Yngve (Journal article; Peer reviewed, 2018)
      Various approaches for the assessment of quality of experience for video conferencing exist that try to quantify the level of satisfaction of the user. In order for videoconferencing to really succeed as a substitute of ...
    • Assessment Protocols and Comparison of Ordering Relations for Spectral Image Processing 

      Deborah, Hilda; Richard, Noël; Hardeberg, Jon Yngve; Fernandez Maloigne, Christine (Journal article; Peer reviewed, 2018)
      Recent developments in hyperspectral sensors allow us to obtain high spectral and spatial resolutions that are close to the optical and physical structures of acquired surfaces. Consequently, hyperspectral imaging is used ...
    • Automatic Redeye Correction Algorithm with Multilevel Eye Confirmation 

      George, Sony; Hardeberg, Jon Yngve; George, Tomson G.; Nampoori, V. P. N. (Journal article; Peer reviewed, 2010)
      Redeye is a well-known problem in portrait photography. This effect is caused by the light entering the subject's eye through the pupil and reflection from the retina back to the imaging sensor. Many of the existing redeye ...
    • Behavioral Investigation of Visual Appearance Assessment 

      Gigilashvili, Davit; Thomas, Jean-Baptiste; Hardeberg, Jon Yngve; Pedersen, Marius (Journal article; Peer reviewed, 2018)
      The way people judge, assess and express appearance they perceive can dramatically vary from person to person. The objective of this study is to identify the research hypotheses and outline directions for the future work ...
    • Blurring Impairs Translucency Perception 

      Gigilashvili, Davit; Pedersen, Marius; Hardeberg, Jon Yngve (Journal article; Peer reviewed, 2018)
      Translucency and factors impacting its perception is not yet fully understood. Various studies have examined the correlation between physical material properties and perceived translucency. Furthermore, the concept of ...
    • Characterizing the response of charge-couple device digital color cameras 

      Slavkovikj, Viktor; Hardeberg, Jon Yngve; Eichhorn, Alexander (Journal article; Peer reviewed, 2012)
      The advance and rapid development of electronic imaging technology has lead the way to production of imaging sensors capable of acquiring good quality digital images with a high resolution. At the same time the cost and ...
    • Color and Quality Enhancement of Videoconferencing Whiteboards 

      Duque, Carlos Andrés Arango; Abebe, Mekides Assefa; Shahid, Mohammed; Hardeberg, Jon Yngve (Journal article; Peer reviewed, 2018)
      Whiteboards are commonly used as a medium of instant illustration of ideas during several activities including presentations, lectures, meetings, and related others through videoconferencing systems. However, the acquisition ...
    • Colour and spectral simulation of textile samples onto paper: a feasibility study 

      Slavuj, Radovan; Marijanovic, Kristina; Hardeberg, Jon Yngve (Peer reviewed, 2014)
      This study has investigated how the growing technology of multichannel printing and the area of spectral printing in the graphic arts could help the textile industry to communicate accurate colour. In order to reduce the ...
    • Comparison of eye tracking devices used on printed images 

      Komínková, Barbora; Pedersen, Marius; Hardeberg, Jon Yngve; Kaplanová, Marie (Proceedings of SPIE;6806, Journal article; Peer reviewed, 2008)
      Eye tracking as a quantitative method for collecting eye movement data, requires the accurate knowledge of the eye position, where eye movements can provide indirect evidence about what the subject sees. In this study two ...
    • Compensating for non-uniform screens in projection display systems 

      Renani, Siavash Asgari; Tsukada, Masato; Hardeberg, Jon Yngve (Proceedings of SPIE;7241, Journal article; Peer reviewed, 2009)
      In this paper the performance of screen compensation based on previous work by Nayar et al. and Ashdown et al. and five different camera characterization methods are evaluated. Traditionally, colorimetric characterization ...
    • Computational Color Constancy using a Stereo Camera 

      Shrestha, Raju; Hardeberg, Jon Yngve (Chapter; Peer reviewed, 2012)
      Chromagenic color constancy is one of the promising solutions to the color constancy problem. However, this technique requires two shots of a scene: a conventional RGB image and an additional image that is optically ...
    • Computational color constancy using chromagenic filters in color filter arrays 

      Shrestha, Raju; Hardeberg, Jon Yngve (Journal article; Peer reviewed, 2012)
      We have proposed, in this paper, a new color constancy technique, an extension to the chromagenic color constancy. Chromagenic based illuminant estimation methods take two shots of a scene, one without and one with a ...
    • Data Hiding by White Modulation in Color Direct Binary Search Halftones 

      Kitanovski, Vlado; Eschbach, Reiner; Pedersen, Marius; Hardeberg, Jon Yngve (Journal article; Peer reviewed, 2017)
      In this article, the authors propose a method for hiding a visual watermark in color printed images with arbitrary, natural content. The embedded watermark is imperceptible under normal illumination, but it is revealed ...
    • Design of four-band multispectral imaging system with one single-sensor 

      Sun, Bangyong; Yuan, Nianzeng; Cao, Congjun; Hardeberg, Jon Yngve (Journal article; Peer reviewed, 2018)
      In order to acquire multispectral images precisely and quickly, a four-band multispectral capturing system with one imaging sensor is designed and evaluated in this paper. Firstly, four imaging bands are arranged in a 22 ...
    • Detection of worms in error diffusion halftoning 

      Pedersen, Marius; Albregtsen, Fritz; Hardeberg, Jon Yngve (Proceedings of SPIE;7242, Journal article; Peer reviewed, 2009)
      Digital halftoning is used to reproduce a continuous tone image with a printer. One of these halftoning algorithms, error diffusion, suffers from certain artifacts. One of these artifacts is commonly denoted as worms. We ...
    • Development of an adaptive bilateral filter for evaluating color image difference 

      Wang, Zhaohui; Hardeberg, Jon Yngve (Journal article; Peer reviewed, 2012)
      patial filtering, which aims to mimic the contrast sensitivity function (CSF) of the human visual system (HVS), has previously been combined with color difference formulae for measuring color image reproduction errors. ...
    • Evaluating the smoothness of color transformations 

      Aristova, Anna; Wang, Zhaohui; Hardeberg, Jon Yngve (Proceedings of SPIE;7866, Journal article; Peer reviewed, 2011)
      Multi-dimensional look up tables (LUTs) are widely employed for color transformations due to its high accuracy and general applicability. Using the LUT model generally involves the color measurement of a large number of ...