2024

• Farup, Ivar; Rivertz, Hans. (2024) Anisotropic Diffusion in Riemannian Colour Geometry. Journal of Mathematical Imaging and Vision
  Academic article

2023

• Rivertz, Hans. (2023) Multiset permutation generation by transpositions. arXiv.org
  Academic article
• Rivertz, Hans; Mackiewicz, Michal. (2023) Optimised Spherical Sampling of the Object Colour Solid. The Society for Imaging Science and Technology
  Academic chapter/article/Conference paper

2022

• Alsam, Ali; Rivertz, Hans Jakob. (2022) Three dimensional surface preserving smoothing. The Society for Imaging Science and Technology
  Academic chapter/article/Conference paper

2021

• Alsam, Ali; Rivertz, Hans. (2021) Long range diffusion with control of the directional differences. The Society for Imaging Science and Technology
  Academic chapter/article/Conference paper

2020

• Rivertz, Hans Jakob. (2020) On filters making an imaging sensor more colorimetric. The Society for Imaging Science and Technology
  Academic chapter/article/Conference paper

2019

• Mackiewicz, Michal; Rivertz, Hans Jakob; Finlayson, Graham. (2019) Spherical sampling methods for the calculation of metamer mismatch volumes. Optical Society of America. Journal A: Optics, Image Science, and Vision (JOSA A)
  Academic article
• Rivertz, Hans Jakob; Alsam, Ali. (2019) Colour to Grey by Maximum Signed Gradient. IEEE conference proceedings
  Academic chapter/article/Conference paper
• Alsam, Ali; Rivertz, Hans Jakob. (2019) Improved color edge preserving smoothing. NIKT: Norsk IKT-konferanse for forskning og utdanning
  Academic article
• Rivertz, Hans Jakob. (2019) On an Euler-Lagrange equation for color to grayscale conversion. The Society for Imaging Science and Technology
  Academic chapter/article/Conference paper

2018

• Alsam, Ali; Rivertz, Hans Jakob. (2018) A mathematical approach to best luminance maps. Optical Society of America. Journal A: Optics, Image Science, and Vision (JOSA A)
  Academic article

2017

• Mackiewicz, Michal; Rivertz, Hans Jakob; Finlayson, Graham. (2017) Metamer Mismatch Volumes Using Spherical Sampling. The Society for Imaging Science and Technology
  Academic chapter/article/Conference paper
• Eschenburg, Jost-Hinrich; Rivertz, Hans Jakob. (2017) The complete cartwheel tiling. Journal of Geometry
  Academic article

2015

• Alsam, Ali; Rivertz, Hans Jakob. (2015) Fast scale space image decomposition. IEEE conference proceedings
  Academic chapter/article/Conference paper
• Alsam, Ali; Farup, Ivar; Rivertz, Hans Jakob. (2015) Iterative sharpening for image contrast enhancement. IEEE conference proceedings
  Academic chapter/article/Conference paper
• Rivertz, Hans Jakob. (2015) Self-similar aperiodic patterns with 9-fold symmetry. Journal of Number Theory
  Academic article

2014

• Rivertz, Hans Jakob; Alsam, Ali. (2014) Drawing Parrots with Charcoal. Springer
  Academic chapter/article/Conference paper
• Eschenburg, Jost-Hinrich; Rivertz, Hans Jakob. (2014) Self similarity of dihedral tilings. Journal of Algebra
  Academic article

2013

• Alsam, Ali; Rivertz, Hans Jakob. (2013) Color Edge Preserving Smoothing. Springer
  Academic chapter/article/Conference paper
• Rivertz, Hans Jakob. (2013) On real local isometric immersions of CQ^2_c into CP^3. Journal of Geometry
  Academic article
• Alsam, Ali; Rivertz, Hans Jakob; Sharma, Puneet. (2013) What the eye did not see--a fusion approach to image coding. International journal on artificial intelligence tools
  Academic article
• Rivertz, Hans Jakob. (2013) On those ordinary differential equations that are solved exactly by the improved Euler method. Archivum Mathematicum
  Academic article

2012

• Alsam, Ali; Rivertz, Hans Jakob. (2012) Algebraic color to grayscale. ACTA Press
  Academic chapter/article/Conference paper
• Alsam, Ali; Rivertz, Hans Jakob; Sharma, Puneet. (2012) What the Eye Did Not See – A Fusion Approach to Image Coding. Springer
  Academic chapter/article/Conference paper
• Røe, Per; Arnesen, Ragni Ryvold; Danielsson, Jerker; Vestgården, Jørn Inge; Rivertz, Hans Jakob; Boudko, Svetlana. (2012) TrueGen 4.0 Design. NR-notat (DART/11/2012)
  Report

2011

• Alsam, Ali; Rivertz, Hans Jakob. (2011) Fast Edge Preserving Smoothing Algorithm. ACTA Press
  Academic chapter/article/Conference paper
• Alsam, Ali; Rivertz, Hans Jakob. (2011) Constrained Gradient Integration for Improved Image Contrast. ACTA Press
  Academic chapter/article/Conference paper
• Rivertz, Hans Jakob. (2011) On local isometric immersions into complex and quaternionic projective spaces. Archivum Mathematicum
  Academic article

2009

• Rivertz, Hans Jakob. (2009) On an invariant on isometric immersions into spaces of constant sectional curvature. Ukrainian Mathematical Journal
  Academic article

2007

• Rivertz, Hans Jakob; Eschenburg, Jost-Hinrich. (2007) Self similar symmetric planar tilings. Journal of Geometry
  Academic article

2005

• Østvold, Bjarte M.; Rivertz, Hans Jakob. (2005) Performance evaluation of the Velocity Database Engine.
  Report
• Rivertz, Hans Jakob. (2005) Bluetooth security.
  Report
• Danielsson, Jerker; Groven, Arne-Kristian; Kristoffersen, Thor; Rivertz, Hans Jakob; Skomedal, Åsmund. (2005) Elektroniske spor.
  Report

2004

• Boudko, Svetlana; Rivertz, Hans Jakob. (2004) The NR JPEG 2000-codec. NR-notat (DART/08/04)
  Report
• Kristoffersen, Thor; Vestgården, Jørn Inge; Rivertz, Hans Jakob. (2004) Design and Implementation of the Channel-S Streaming System. NR-notat (DART/07/04)
  Report

2003

• Aredo, Demissie; Rivertz, Hans Jakob; Vestgården, Jørn Inge. (2003) LBS System Architecture with Privacy. Ukjent
  Academic article

2002

• Arnesen, Ragni Ryvold; Huseby, Ragnar Bang; Rivertz, Hans Jakob; Røe, Per; Snekkenes, Einar; Vestgården, Jørn Inge. (2002) Replacement of random number generator in Norsk Tipping's random number draw system. NR-notat (GEM/02/02)
  Report

2001

• Arnesen, Ragni Ryvold; Aredo, Demissie; Huseby, Ragnar Bang; Rivertz, Hans Jakob; Rue, Håvard; Snekkenes, Einar. (2001) Random Number Draw System - Design. Norsk Regnesentral
  Report

1996

• Rivertz, Hans Jakob; Tomter, Per. (1996) Stability of geodesic spheres. World Scientific
  Academic chapter/article/Conference paper