Browsing NTNU Open by Author "Simone, Gabriele"

Now showing items 1-5 of 5

    • Measuring perceptual contrast in a multilevel framework 

      Simone, Gabriele; Pedersen, Marius; Hardeberg, Jon Yngve; Rizzi, Alessandro (Proceedings of SPIE;7240, Journal article; Peer reviewed, 2009)
      In this paper, we propose and discuss some approaches for measuring perceptual contrast in digital images. We start from previous algorithms by implementing different local measures of contrast and a parameterized way to ...

    • Multi-level contrast filtering in image difference metrics 

      Simone, Gabriele; Pedersen, Marius; Farup, Ivar; Oleari, Claudio (Journal article; Peer reviewed, 2013)
      In this paper, we present a new metric to estimate the perceived difference in contrast between an original image and a reproduction. This metric, named weighted-level framework Δ E E (WLF-DEE), implements a multilevel ...

    • 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 ...

    • 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 ...