Browsing NTNU Open by Author "Farup, Ivar"

Now showing items 61-76 of 76

    • Spatio-temporal colour correction of strongly degraded movies 

      Islam, A.B.M Tariqul; Farup, Ivar (Proceedings of SPIE;7866, Journal article; Peer reviewed, 2011)
      The archives of motion pictures represent an important part of precious cultural heritage. Unfortunately, these cinematography collections are vulnerable to different distortions such as colour fading which is beyond the ...

    • Spatio-Temporal Retinex-Inspired Envelope with Anisotropic Diffusion 

      Sagvold, Petter (Master thesis, 2023)
      Flere algoritmer har tidligere blitt foreslått for spatiell fargekorrigering av bilder. En av disse algoritmene er STRESS, en Retinex-inspirert algortime som bruker stokastisk sampling for å lage omhyllingskurver. Denne ...

    • Spatio-Temporal Retinex-Inspired Envelope with Stochastic Sampling: A Framework for Spatial Color Algorithms 

      Kolås, Øyvind; Farup, Ivar; Rizzi, Alessandro (Journal article; Peer reviewed, 2011)
      The authors present a new framework for algorithms for a wide range of image enhancement and reproduction applications, named STRESS Spatio-Temporal Retinex-inspired Envelope with Stochastic Sampling. The algorithms work ...

    • Spatio-Temporal Retinex-like Envelope with Total Variation 

      Simone, Gabriele; Farup, Ivar (Chapter; Peer reviewed, 2012)
      Many algorithms for spatial color correction of digital im- ages have been proposed in the past. Some of the most recently developed algorithms use stochastic sampling of the image in or- der to obtain maximum and minimum ...

    • Spatio–Temporal Retinex–Inspired Envelopes with Anisotropic Diffusion 

      Sagvold, Petter; Farup, Ivar; Pedersen, Marius (Peer reviewed; Journal article, 2023)
      Since the introduction of the Retinex theory by Land and McCann in 1971, a multitude of different families, versions, interpretations, implementations, and applications have been proposed. The applications for image ...

    • Standard representation space for spectral imaging 

      Thomas, Jean-Baptiste Denis; Lapray, Pierre-Jean; Derhak, Max; Farup, Ivar (Peer reviewed; Journal article, 2023)

    • Statistical Analysis of Sparkle in Snow Images 

      Nguyen, Mathieu; Thomas, Jean Baptiste; Farup, Ivar (Peer reviewed; Journal article, 2022)
      Sparkle from snow is a common phenomenon in Nature but not well studied in the literature. We perform a statistical study on digital snow images captured in-situ to analyze sparkle events by using contrast and density of ...

    • Stochastic Capsule Endoscopy Image Enhancement 

      Mohammed, Ahmed Kedir; Farup, Ivar; Pedersen, Marius; Hovde, Øistein; Yildirim Yayilgan, Sule (Journal article; Peer reviewed, 2018)
      Capsule endoscopy, which uses a wireless camera to take images of the digestive tract, is emerging as an alternative to traditional colonoscopy. The diagnostic values of these images depend on the quality of revealed ...

    • StreoScenNet: Surgical stereo robotic scene segmentation 

      Mohammed, Ahmed Kedir; Yildirim Yayilgan, Sule; Farup, Ivar; Pedersen, Marius; Hovde, Øistein (Journal article; Peer reviewed, 2019)
      Surgical robot technology has revolutionized surgery toward a safer laparoscopic surgery and ideally been suited for surgeries requiring minimal invasiveness. Sematic segmentation from robot-assisted surgery videos is an ...

    • Termite retinex: A new implementation based on a colony of intelligent agents 

      Simone, Gabriele; Audino, Giuseppe; Farup, Ivar; Albregtsen, Fritz; Rizzi, Alessandro (Journal article; Peer reviewed, 2014)
      Abstract. The original presentation of Retinex, a spatial color correction and image enhancement algorithm modeling the human vision system, as proposed by Land and McCann in 1964, uses paths to explore the image in search ...

    • Termites: a Retinex implementation based on a colony of agents 

      Simone, Gabriele; Audino, Giuseppe; Farup, Ivar; Rizzi, Alessandro (Journal article; Peer reviewed, 2012)
      This paper describes a novel implementation of the Retinex algorithm with the exploration of the image done by an ant swarm. In this case the purpose of the ant colony is not the optimization of some constraints but is ...

    • The Cosmic Causal Mass 

      Bræck, Simen; Grøn, Øyvind; Farup, Ivar (Journal article; Peer reviewed, 2017)
      In order to provide a better understanding of rotating universe models, and in particular the Gödel universe, we discuss the relationship between cosmic rotation and perfect inertial dragging. In this connection, the concept ...

    • Towards exploiting change blindness for image processing 

      Le Moan, Steven; Farup, Ivar; Blahova, Jana (Journal article; Peer reviewed, 2018)
      Change blindness is a type of visual masking which affects our ability to notice changes introduced in visual stimuli (e.g. change in the colour or position of an object). In this paper, we propose to use it as a means to ...

    • Using a Behavioral Match-to-Sample Method to Evaluate Color Vision Deficiency Simulation Methods 

      Simon-Liedtke, Joschua Thomas; Farup, Ivar (Journal article; Peer reviewed, 2016)
      Color vision deficiency (CVD) simulation methods are used both to simulate color vision of color-deficient people and as input for image enhancement methods for the color-deficient. However, a standardized method to compare ...

    • Variational Anisotropic Gradient-Domain Image Processing 

      Farup, Ivar (Peer reviewed; Journal article, 2021)
      Gradient-domain image processing is a technique where, instead of operating directly on the image pixel values, the gradient of the image is computed and processed. The resulting image is obtained by reintegrating the ...

    • Variational Approach for Capsule Video Frame Interpolation 

      Mohammed, Ahmed Kedir; Farup, Ivar; Yildirim, Sule; Pedersen, Marius; Hovde, Øistein (Journal article; Peer reviewed, 2018)
      Capsule video endoscopy, which uses a wireless camera to visualize the digestive tract, is emerging as an alternative to traditional colonoscopy. Colonoscopy is considered as the gold standard for visualizing the colon and ...