Browsing NTNU Open by Author "Albregtsen, Fritz"

Now showing items 1-5 of 5

    • 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 ...

    • Image quality metrics for the evaluation of print quality 

      Pedersen, Marius; Bonnier, Nicolas; Hardeberg, Jon Yngve; Albregtsen, Fritz (Proceedings of SPIE;7867, Journal article; Peer reviewed, 2011)
      Image quality metrics have become more and more popular in the image processing community. However, so far, no one has been able to define an image quality metric well correlated with the percept for overall image quality. ...

    • Numerical evaluation on parametric choices influencing segmentation results in radiology images—a multi-dataset study 

      Prasad, Pravda Jith Ray; Survarachakan, Shanmugapriya; Khan, Zohaib Amjad; Lindseth, Frank; Elle, Ole Jacob; Albregtsen, Fritz; Kumar, Rahul Prasanna (Peer reviewed; Journal article, 2021)
      Medical image segmentation has gained greater attention over the past decade, especially in the field of image-guided surgery. Here, robust, accurate and fast segmentation tools are important for planning and navigation. ...

    • Regression based characterization of color measurement instruments in printing applications 

      Nussbaum, Peter Stefan; Hardeberg, Jon Yngve; Albregtsen, Fritz (Proceedings of SPIE;7866, Journal article; Peer reviewed, 2011)
      In the context of print quality and process control colorimetric parameters and tolerance values are clearly defined. Calibration procedures are well defined for color measurement instruments in printing workflows. Still, ...

    • 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 ...