Browsing NTNU Open by Author "Nguyen, Mathieu"

Now showing items 1-6 of 6

    • Exploring Imaging Methods for In Situ Measurements of the Visual Appearance of Snow 

      Nguyen, Mathieu; Thomas, Jean-Baptiste Denis; Farup, Ivar (Peer reviewed; Journal article, 2024)
      We explored imaging methods to perform in situ field measurements of physical correlates of the visual appearance of snow. Measurements were performed at three locations in Norway between February and March 2023. We used ...

    • Image enhancement dataset for evaluation of image quality metrics 

      Kadyrova, Altynay; Pedersen, Marius; Ahmad, Bilal; Mandal, Dipendra Jee; Nguyen, Mathieu; Zimmermann, Pauline (Peer reviewed; Journal article, 2022)
      Image enhancement is important in different application areas such as medical imaging, computer graphics, and military applications. In this paper, we introduce a dataset with enhanced images. The images have been enhanced ...

    • Image-based Estimation of Physical Correlates of the Visual Appearance of Snow 

      Nguyen, Mathieu (Doctoral theses at NTNU;2024:69, Doctoral thesis, 2024)
      The most common representation of snow is to describe it as a white and cold powder material that is usually found in winter or specific areas of the world. It can also be associated with the Christmas festivities, winter ...

    • Investigating the Kokhanovsky snow reflectance model in closerange spectral imaging 

      Nguyen, Mathieu; Thomas, Jean Baptiste; Farup, Ivar (Chapter, 2021)
      The internal structure of the snow and its reflectance function play a major contribution in its appearance. We investigate the snow reflectance model introduced by Kokhanovsky and Zege in a close-range imaging scale. By ...

    • Measuring the Optical Properties of Highly Diffuse Materials 

      Nguyen, Mathieu; Thomas, Jean-Baptiste Denis; Farup, Ivar (Peer reviewed; Journal article, 2023)
      Measuring the optical properties of highly diffuse materials is a challenge as it could be related to the white colour or an oversaturation of pixels in the acquisition system. We used a spatially resolved method and adapted ...

    • 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 ...