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Viser treff 1-36 av 36

2019
1 Alsam, Ali; Rivertz, Hans Jakob.
Improved color edge preserving smoothing. NIKT: Norsk IKT-konferanse for forskning og utdanning 2019 s. -
NTNU Untitled
 
2 Mackiewicz, Michal; Rivertz, Hans Jakob; Finlayson, Graham.
Spherical sampling methods for the calculation of metamer mismatch volumes. Optical Society of America. Journal A: Optics, Image Science, and Vision 2019 ;Volum 36.(1) s. 96-104
NTNU Untitled
 
3 Rivertz, Hans Jakob.
On an Euler-Lagrange equation for color to grayscale conversion. I: CIC27, 27th Color and Imaging Conference Color Science and Engineering Systems, Technologies, and Applications. The Society for Imaging Science and Technology 2019 ISBN 978-0-89208-344-2. s. 95-98
NTNU Untitled
 
4 Rivertz, Hans Jakob; Alsam, Ali.
Colour to Grey by Maximum Signed Gradient. I: IWSSIP 2019, 25th International Conference on Systems, Signals and image processing; 5 - 7 June 2019, Osijek, Croatia. IEEE conference proceedings 2019 ISBN 978-1-7281-3227-3. s. 225-228
NTNU Untitled
 
2018
5 Alsam, Ali; Rivertz, Hans Jakob.
A mathematical approach to best luminance maps. Optical Society of America. Journal A: Optics, Image Science, and Vision 2018 ;Volum 35.(4) s. B239-B243
NTNU Untitled
 
2017
6 Eschenburg, Jost-Hinrich; Rivertz, Hans Jakob.
The complete cartwheel tiling. Journal of Geometry 2017 ;Volum 108.(2) s. 703-717
NTNU Untitled
 
7 Mackiewicz, Michal; Rivertz, Hans Jakob; Finlayson, Graham.
Metamer Mismatch Volumes Using Spherical Sampling. I: 25th Color and Imaging Conference: Color Science and Engineering Systems, Technologies, and Applications, Final program and proceedings;. The Society for Imaging Science and Technology 2017 ISBN 9780892083275. s. 88-92
NTNU Untitled
 
2016
8 Finlayson, Graham; Mackiewicz, Michal; Rivertz, Hans Jakob.
Computing the object colour solid using spherical sampling. PICS 2016; 2016-09-14 - 2016-09-16
NTNU Untitled
 
2015
9 Alsam, Ali; Farup, Ivar; Rivertz, Hans Jakob.
Iterative sharpening for image contrast enhancement. I: 2015 Colour and Visual Computing Symposium (CVCS). IEEE conference proceedings 2015 ISBN 978-1-4799-1765-5. s. -
NTNU Untitled
 
10 Alsam, Ali; Rivertz, Hans Jakob.
Fast scale space image decomposition. I: IWSSIP 2015, 22nd International Conference on Systems, Signals and Image Processing; 10 – 12 September 2015, London, United Kingdom. IEEE conference proceedings 2015 ISBN 978-1-4673-8353-0. s. 17-20
NTNU Untitled
 
11 Rivertz, Hans Jakob.
Self-similar aperiodic patterns with 9-fold symmetry. Journal of Number Theory 2015 ;Volum 155. s. 100-110
NTNU Untitled
 
2014
12 Eschenburg, Jost-Hinrich; Rivertz, Hans Jakob.
Self similarity of dihedral tilings. Journal of Algebra 2014 ;Volum 405. s. 69-74
NTNU Untitled
 
13 Rivertz, Hans Jakob; Alsam, Ali.
Drawing Parrots with Charcoal. I: Image Analysis and Recognition, 11th International Conference, ICIAR 2014, Vilamoura, Portugal, October 22-24, 2014, Proceedings, Part I. Springer 2014 ISBN 978-3-319-11758-4. s. 159-166
NTNU Untitled
 
2013
14 Alsam, Ali; Rivertz, Hans Jakob.
Color Edge Preserving Smoothing. I: Advances in Visual Computing, 9th International Symposium, ISVC 2013. Springer 2013 ISBN 978-3-642-41913-3. s. 79-86
NTNU Untitled
 
15 Alsam, Ali; Rivertz, Hans Jakob; Sharma, Puneet.
What the eye did not see--a fusion approach to image coding. International journal on artificial intelligence tools 2013 ;Volum 22.(6) s. -
NTNU Untitled
 
16 Rivertz, Hans Jakob.
On real local isometric immersions of CQ^2_c into CP^3. Journal of Geometry 2013 ;Volum 104.(2) s. 357-374
NTNU Untitled
 
17 Rivertz, Hans Jakob.
On those ordinary differential equations that are solved exactly by the improved Euler method. Archivum mathematicum 2013 ;Volum 49.(1) s. 29-34
NTNU Untitled
 
2012
18 Alsam, Ali; Rivertz, Hans Jakob.
Algebraic color to grayscale. I: Proceedings of the 14th IASTED International Conference on Signal and Image Processing. ACTA Press 2012 ISBN 978-0-88986-928-8. s. 198-203
NTNU Untitled
 
19 Alsam, Ali; Rivertz, Hans Jakob; Sharma, Puneet.
What the Eye Did Not See – A Fusion Approach to Image Coding. I: Advances in Visual Computing ; 8th International Symposium, ISVC 2012, Rethymnon, Crete, Greece, July 16-18, 2012, Revised Selected Papers, Part II. Springer 2012 ISBN 978-3-642-33191-6. s. 199-208
NTNU Untitled
 
20 Røe, Per; Arnesen, Ragni Ryvold; Danielsson, Jerker; Vestgården, Jørn Inge; Rivertz, Hans Jakob; Boudko, Svetlana; Kristoffersen, Thor.
TrueGen 4.0 Design. Oslo: Norsk Regnesentral 2012 54 s. NR-notat(DART/11/2012)
NR Untitled
 
2011
21 Alsam, Ali; Rivertz, Hans Jakob.
Constrained Gradient Integration for Improved Image Contrast. I: Proceedings of the 13th IASTED International Conference on Signal and Image Processing. ACTA Press 2011 ISBN 978-0-88986-908-0. s. 13-18
NTNU Untitled
 
22 Alsam, Ali; Rivertz, Hans Jakob.
Constrained gradient integration for improved image contrast. Signal and Image Processing (SIP 2011); 2011-12-14 - 2011-12-16
NTNU Untitled
 
23 Alsam, Ali; Rivertz, Hans Jakob.
Fast Edge Preserving Smoothing Algorithm. I: Proceedings of the 13th IASTED International Conference on Signal and Image Processing. ACTA Press 2011 ISBN 978-0-88986-908-0. s. 8-12
NTNU Untitled
 
24 Alsam, Ali; Rivertz, Hans Jakob.
Fast edge preserving smoothing algorithm. Signal and Image Processing - SIP 2011; 2011-12-14 - 2011-12-16
NTNU Untitled
 
25 Rivertz, Hans Jakob.
On local isometric immersions into complex and quaternionic projective spaces. Archivum mathematicum 2011 ;Volum 47.(4) s. 251-256
NTNU Untitled
 
2009
26 Rivertz, Hans Jakob.
On an invariant on isometric immersions into spaces of constant sectional curvature. Ukrainian Mathematical Journal 2009 ;Volum 61.(12) s. 1946-1955
NTNU Untitled
 
2007
27 Rivertz, Hans Jakob; Eschenburg, Jost-Hinrich.
Self similar symmetric planar tilings. Journal of Geometry 2007 ;Volum 87. s. 55-75
NTNU Untitled
 
2005
28 Østvold, Bjarte M.; Rivertz, Hans Jakob.
Performance evaluation of the Velocity Database Engine. : 2005 18 s. (DART/03/05)
NTNU Untitled
 
29 Danielsson, Jerker; Groven, Arne-Kristian; Kristoffersen, Thor; Rivertz, Hans Jakob; Skomedal, Åsmund.
Elektroniske spor. : 2005 (ISBN 978-82-53-90516-7) 65 s. (1008)
NR NTNU Untitled
 
30 Rivertz, Hans Jakob.
Bluetooth security. : 2005 15 s. (DART/05/05)
NTNU Untitled
 
2004
31 Boudko, Svetlana; Rivertz, Hans Jakob.
The NR JPEG 2000-codec. Oslo: Norsk Regnesentral 2004 19 s. NR-notat(DART/08/04)
NR NTNU Untitled
 
32 Kristoffersen, Thor; Vestgården, Jørn Inge; Rivertz, Hans Jakob.
Design and Implementation of the Channel-S Streaming System. Oslo: Norsk Regnesentral 2004 22 s. NR-notat(DART/07/04)
NR NTNU UiO Untitled
 
2003
33 Aredo, Demissie; Rivertz, Hans Jakob; Vestgården, Jørn Inge.
LBS System Architecture with Privacy. Ukjent 2003 ;Volum 2003. s. 6-
NR Untitled
 
2002
34 Arnesen, Ragni Ryvold; Huseby, Ragnar Bang; Rivertz, Hans Jakob; Røe, Per; Snekkenes, Einar; Vestgården, Jørn Inge.
Replacement of random number generator in Norsk Tipping's random number draw system. Oslo: Norsk Regnesentral 2002 40 s. NR-notat(GEM/02/02)
NR NTNU UiO Untitled
 
2001
35 Arnesen, Ragni Ryvold; Aredo, Demissie; Huseby, Ragnar Bang; Rivertz, Hans Jakob; Rue, Håvard; Snekkenes, Einar; Vestgården, Jørn Inge.
Random Number Draw System - Design. Oslo: Norsk Regnesentral 2001 81 s.
NR Untitled
 
1996
36 Rivertz, Hans Jakob; Tomter, Per.
Stability of geodesic spheres. I: Geometry and topology of submanifolds VIII. World Scientific 1996 ISBN 978-981-4530-87-3. s. 320-324
UiO Untitled