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AuthorTitleYearJournal/ProceedingsReftypeDOI/URL
Läthen, G., Lenz, R., Person, A. & Borga, M. Local Adaptation of Transfer Functions for Blood Vessel Visualization 2012 Proc. SSBA 2012  inproceedings  
Lenz, R., Zografos, V. & Solli, M. Advanced Color Image Processing and Analysis 2012   inbook  
Lenz, R. & Zografos, V. From Color to Gray via the Weibull Manifold 2012 Proc. SSBA 2012  inproceedings  
Lenz, R. & Zografos, V. RGB Filter design using the properties of theWeibull Manifold 2012 Proc. 6th European Conference on Colour in Graphics, Imaging, and Vision, pp. 200-205  inproceedings  
Åström, F., Felsberg, M. & Lenz, R. Structure Preserving Anisotropic Diffusion of Vector Valued Images 2011 Proc. SSBA Symposium  inproceedings  
Solli, M. & Lenz, R. Content Based Detection of Popular Images in Large Image Databases 2011
Vol. 6688Image Analysis, pp. 218-227 		 inproceedings  
Åström, F., Felsberg, M. & Lenz, R. Color Persistent Anisotropic Diffusion of Images 2011
Vol. 6688Image Analysis, pp. 262-272 		 inproceedings  
Mochizuki, R., Oshima, S., Lenz, R. & Chao, J. Exact Compensation of Color-Weakness with Discrimination Threshold Matching 2011 Universal Access in HCI, Part IV, HCII 2011, pp. 155–164  inproceedings  
Solli, M. & Lenz, R. A Font Search Engine for Large Font Databases 2011 ELCVIA Electronic Letters on Computer Vision and Image Analysis
Vol. 10(1), pp. 24-41 		 article  
Solli, M. Color Emotions in Large Scale Content Based Image Indexing 2011 School: Linköping University  phdthesis URL 
Solli, M. & Lenz, R. Color emotions for multi-colored images 2011 Color Res. Appl.
Vol. 36(3), pp. 210-221 		 article URL 
Zografos, V. & Lenz, R. Spatio-chromatic Image Content Descriptors and Their Analysis Using Extreme Value Theory 2011
Vol. 6688Image Analysis, pp. 579-591 		 inproceedings  
Zografos, V. & Lenz, R. Fast Algebraic Transforms and Extreme Value Theory 2011 Proc. SSBA  inproceedings  
Kohei, T., Chao, J. & Lenz, R. On Curvature of Color Spaces and its Implications 2010 Proceedings 5th European Conference on Colour in Graphics, Imaging, and Vision, pp. 393-398  inproceedings URL 
Lenz, R., Mochizuki, R. & Chao, J. We KAN 2010 (34)Proceedings SSBA 2010, pp. 19-22  inproceedings  
Lenz, R., Mochizuki, R. & Chao, J. Iwasawa Decomposition and Computational Riemannian Geometry 2010 Proc. ICPR, pp. 4472-4475  inproceedings  
Lenz, R. & Solli, M. Dihedral Groups and Spatio-Chromatic Filter Systems 2010 16. Workshop Farbbildverarbeitung, pp. 51-62  inproceedings URL 
Lenz, R. & Latorre Carmona, P. Hierarchical S(3)-coding of RGB histograms 2010 Commun. Comput. Info. Sci.
Vol. 68 CCISInternational Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications, VISIGRAPP 2009, pp. 188-200 		 incollection URL 
Solli, M. & Lenz, R. Color Semantics for Image Indexing 2010 Proceedings 5th European Conference on Colour in Graphics, Imaging, and Vision, pp. 353-358  inproceedings URL 
Solli, M. & Lenz, R. Color emotions for multi-colored images 2010 Color Res. Appl.
Vol. n/a, pp. n/a-n/a 		 article URL 
Solli, M. & Lenz, R. Emotion related structures in large image databases 2010 Proceedings of the ACM International Conference on Image and Video Retrieval, pp. 398-405  inproceedings DOI  
Andersson, T., Läthén, G., Lenz, R. & Borga, M. A Fast Optimization Method for Level Set Segmentation 2009 Image AnalysisProceedings 16th Scandinavian Conference, SCIA 2009, pp. 400-409  inproceedings URL 
Läthén, G., Andersson, T., Lenz, R. & Borga, M. Momentum Based Optimization Methods for Level Set Segmentation 2009 Scale Space and Variational Methods in Computer VisionProceedings Second International Conference, SSVM 2009, Voss, pp. 124-136  inproceedings URL 
Läthén, G., Andersson, T., Lenz, R. & Borga, M. Level set based segmentation using gradient descent with momentum 2009 SSBA 2009, Symposium on image analysis,2009, pp. 1-4  inproceedings DOI URL 
Lenz, R. Octahedral Filters for 3D Image Processing 2009 Proceedings SSBA 2009, pp. 109-112  inproceedings  
Lenz, R. & Carmona, P.L. Transform Coding of RGB-Histograms 2009 International Conference on Computer Vision Theory and Applications (VISAPP), pp. 117-124  inproceedings URL 
Lenz, R. & Latorre Carmona, P. Octahedral Transforms for 3-D Image Processing 2009 Image Processing, IEEE Transactions on
Vol. 18(12)Image Processing, IEEE Transactions on, pp. 2618-2628 		 article URL 
Lenz, R., Oshima, S., Mochizuki, R. & Chao, J. An Invariant Metric on the Manifold of Second Order Moments 2009 IEEE Color and Reflectance in Imaging and Computer Vision Workshop 2009 - CRICV 2009, pp. 1923-1930  inproceedings DOI URL 
Ohshima, S., Mochizuki, R., Chao, J. & Lenz, R. Color Reproduction Using Riemann Normal Coordinates 2009 Computational Color Imaging
Vol. 5646Second International Workshop, CCIW 2009. Revised Selected Papers, pp. 140-149 		 inproceedings DOI URL 
Solli, M. & Lenz, R. Color Harmony for Image Indexing 2009 2009 IEEE 12th International Conference on Computer Vision Workshops, ICCV Workshops, pp. 1885-1892  inproceedings DOI URL 
Solli, M. & Lenz, R. Visualization of large font databases 2009 Proc. IARIGAI 2009  inproceedings  
Solli, M. & Lenz, R. Color Based Bags-of-Emotions 2009 Computer Analysis of Images and Patterns
Vol. 5702Proceedings Computer Analysis of Images and Patterns (CAIP 2009), pp. 573-580 		 inproceedings DOI URL 
Chao, J., Lenz, R., Matsumoto, D. & Nakamura, T. Riemann Geometry for Color Characterization and Mapping 2008 Proc. CGIV 2008, pp. 277-282  inproceedings DOI URL 
Heikkinen, V., Lenz, R., Jetsu, T., Parkkinen, J. & Jääskeläinen, T. Estimation of Reflectance Spectra Using Multiple Illuminations 2008 Proc. CGIV 2008, pp. 272-276  inproceedings DOI URL 
Heikkinen, V., Lenz, R., Jetsu, T., Parkkinen, J., Hauta-Kasari, M. & Jääskeläinen, T. Evaluation and unification of some methods for estimating reflectance spectra from RGB images 2008 J. Opt. Soc. Am. A
Vol. 25(10), pp. 2444-2458 		 article URL 
Lenz, R. Lie methods for color robot vision 2008 Robotica
Vol. 26(4), pp. 453-464 		 article URL 
Lenz, R. Structures in Spaces of RGB Histograms 2008 14. Workshop Farbbildverarbeitung, Aachen, 1.-2. Oktober 2008, pp. 13-22  inproceedings DOI URL 
Mochizuki, R., Nakamura, T., Chao, J. & Lenz, R. Correction of Color-Weakness by Matching of Discrimination Thresholds 2008 Proc. CGIV 2008, pp. 208-213  inproceedings DOI URL 
Solli, M. & Lenz, R. Color Emotions for Image Classification and Retrieval 2008 Proc. CGIV 2008, pp. 367-371  inproceedings DOI URL 
Solli, M. & Lenz, R. Emotional Satisfaction in Color Image Retrieval 2008 Proceedings Swedish Symposium on Image Analysis 2008, pp. 7-10  inproceedings  
Alsam, A. & Lenz, R. Calibrating Color Cameras using Metameric Blacks 2007 Journal Optical Society of America A
Vol. 24(1), pp. 11-17 		 article  
Latorre Carmona, P. & Lenz, R. Performance evaluation of dimensionality reduction techniques for multispectral images 2007 Int. J. Imaging Systems and Technology
Vol. 17(3), pp. 202-217 		 article DOI  
Latorre Carmona, P., Lenz, R., Pla, F. & Sotoca, J. Affine Illumination Compensation for Multispectral Images 2007 Image Analysis
Vol. 4522Image Analysis, 15th Scandinavian Conference, SCIA 2007, Aalborg, Denmark, June 10-14, 2007, pp. 522-531 		 inproceedings URL 
Lenz, R. Crystal vision-applications of point groups in computer vision 2007
Vol. 4844,Proc. Asian Conference Computer Vision ACCV 2007, pp. 744–753 		 inproceedings  
Lenz, R., Latorre Carmona, P. & Meer, P. The Hyperbolic Geometry of Illumination-Induced Chromaticity Changes 2007 Computer Vision and Pattern Recognition, 2007. CVPR '07. IEEE Conference on, pp. 1-6  inproceedings DOI  
Lenz, R. Optimizing Color 2007 Proceedings of the Second International Workshop on Image Media Quality and its Applications, pp. 64-69  inproceedings  
Solli, M. & Lenz, R. FyFont: Find-your-Font in Large Font Databases 2007 Image Analysis
Vol. 4522Image Analysis, 15th Scandinavian Conference, SCIA 2007, Aalborg, Denmark, June 10-14, 2007, pp. 432-441 		 inproceedings URL 
Solli, M. & Lenz, R. HOW TO FIND THE FONT NAME FOR THIS TITLE 2007 Proc. Swedish Symposium in Image Analysis, pp. 37-40  inproceedings  
Alsam, A. & Lenz, R. Calibrating Color Cameras Using Metameric Blacks 2006 Proc. Third European Conference on Color in Graphics, Imaging and Vision, pp. 75-80  inproceedings  
Bui, T., Lenz, R. & Solli, M. Illumination Induced Changes in Image Statistics 2006 Proc. Third European Conference on Color in Graphics, Imaging and Vision, pp. 48-53  inproceedings  
Lenz, R. & Solli, M. Lie Methods in Color Signal Processing: Illumination Effects 2006
Vol. IIIProc. ICPR 2006,Hongkong, pp. 738-741 		 inproceedings URL 
Bui, T.H., Lenz, R. & Kruse, B. Color and Texture Induced Structures of Keyword Space 2005
Vol. 2Proceedings. of 10th Congress of the International Colour Association, pp. 1059-1062 		 inproceedings  
Bui, T.H. Group-Theoretical Structure in Multispectral Color and Image Databases 2005 Linköping studies in science and technology. Dissertations, ISSN 0345-7524 ; 962, pp. 1-193School: Linköping University  phdthesis URL 
Lenz, R., Bui, T.H. & Takase, K. A Group Theoretical Toolbox for Color Image Operators 2005 Proc. ICIP 05, pp. III-557-III-560  inproceedings  
Lenz, R., Bui, T.H. & Takase, K. Fast Low-Level Filter Systems for Multispectral Color Images 2005
Vol. 1Proceedings. of 10th Congress of the International Colour Association, pp. 535-538 		 inproceedings  
Lenz, R. Spectral Color Spaces: Their Structure and Transformations 2005
Vol. 138Advances in imaging and electron physics, pp. 1-67 		 incollection URL 
Lenz, R., Hai Bui, T. & Hernandez-Andres, J. Group Theoretical Structure of Spectral Spaces 2005 Journal of Mathematical Imaging and Vision
Vol. 23(3), pp. 297-313 		 article URL 
Lenz, R. & Bui, T. Statistical properties of color-signal spaces 2005 Journal of the Optical Society of America A (Optics, Image Science and Vision)
Vol. 22(5)J. Opt. Soc. Am. A, Opt. Image Sci. Vis. (USA), pp. 820-7 		 article URL 
Solli, M., Andersson, M., Kruse, B. & Lenz, R. Digital Camera Characterization for Color Measurements 2005 2005 Beijing International Conference on Imaging: Technology and
Applications for the 21st Century, pp. 278-279 		 inproceedings  
Solli, M., Andersson, M., Lenz, R. & Kruse, B. Color Measurements with a Consumer Digital Camera Using Spectral
Estimation Techniques		 2005
Vol. 3540Proc. Scandinavian Conference Image Analysis 2005, pp. 105-114 		 inproceedings URL 
Tran, L.V. & Lenz, R. Kernel Density Estimators for Hue Based Image Retrieval 2005 Journal Imaging Science and Technology
Vol. 49(2), pp. 185-188 		 article  
Tran, L.V. & Lenz, R. Compact colour descriptors for colour-based image retrieval 2005 Signal Processing
Vol. 85(2), pp. 233-246 		 article URL 
Bui, T.H., Lenz, R. & Landelius, T. Group theoretical investigations of daylight spectra 2004 CGIV 2004: The Second European Conference on Colour Graphics, Imaging and Vision, pp. 437-442  inproceedings  
Lenz, R. Time-Frequency Analysis of Color Spectra 2004 CGIV 2004: The Second European Conference on Colour Graphics, Imaging and Vision, pp. 499-504  inproceedings  
Lenz, R. & Hernandez-Andres, J. Time-Frequency Analysis for Multi-Channel Color Pattern Recognition 2004 CGIV 2004: The Second European Conference on Colour Graphics, Imaging and Vision, pp. 509-514  inproceedings  
Lenz, R. Color Signal Processing 2004 Den 13. Danske Konference i Mønstergenkendelse og Billedanalyse, pp. 2-12  inproceedings  
Lenz, R. & Bui, T. Recognition of non-negative patterns 2004
Vol. Vol.3Proceedings of the 17th International Conference on Pattern Recognition, pp. 498-501 		 inproceedings  
Olsson, B., Ynnerman, A. & Lenz, R. Visualizing weather with synthetic high dynamic range images 2004 Proc. SPIE-2004, Visualization and Data Analysis 2004, San Jose, USA  inproceedings  
Olsson, B., Ynnerman, A. & Lenz, R. Computing synthetic satellite images from weather prediction data 2004 Proc. SPIE-2004, Visualization and Data Analysis 2004, San Jose,
USA 		 inproceedings  
Tran, L.V. & Lenz, R. Efficient Descriptors of Hue Distributions from Kernel Density Estimators
and Fourier Transforms		 2004 CGIV 2004: The Second European Conference on Colour Graphics, Imaging
and Vision, pp. 151-155 		 inproceedings  
Bui, T.H. Non-Euclidean structures in PCA-based descriptions of multispectral databases 2003 School: Linköping University  phdthesis  
Lenz, R., Tran, L.V. & Bui, T.H. Group Theoretical Invariants in Color Image Processing 2003 Proc. Eleventh Color Imaging Conference, pp. 212-217  inproceedings  
Lenz, R. & Bui, T.H. Efficient Descriptors of Hue Distributions from Kernel Density Estimators
and Fourier Transforms		 2003 Proc. Swedish Society for Automated Image Analysis  inproceedings  
Lenz, R., Bui, T. & Hernandez-Andres, J. One-parameter subgroups and the chromaticity properties of time-changing illumination spectra 2003
Vol. 5008Proc. SPIE - Int. Soc. Opt. Eng. (USA), pp. 237-48 		 inproceedings  
Lenz, R. & Bui, T.H. Illumination Invariants 2003 Proc. PICS-2003, pp. 506-511  inproceedings  
Olsson, B., Ynnerman, A. & Lenz, R. SkyVis, an application of Matlab in meteorological visualization 2003 Nordic Matlab Conference, Copenhagen  inproceedings  
Olsson, B., Ynnerman, A. & Lenz, R. Eigenskies: a method of visualizing weather prediction data 2003
Vol. 5009Proc. SPIE - Int. Soc. Opt. Eng. (USA), pp. 1-10 		 inproceedings  
Tran, L. & Lenz, R. Characterization of color distributions with histograms and kernel density estimators 2003
Vol. 5018Proc. SPIE - Int. Soc. Opt. Eng. (USA), pp. 179-89 		 inproceedings  
Tran, L. & Lenz, R. Geometric invariance in describing color features 2003
Vol. 5008Proc. SPIE - Int. Soc. Opt. Eng. (USA), pp. 101-8 		 inproceedings  
Viet Tran, L. Efficient Image Retrieval with Statistical Color Descriptors 2003 , pp. 205School: Linköping University, Department of Science and Technology  phdthesis URL 
Fayyazi, A. & Lenz, R. Texture based Duplex-Board Layer Segmentation 2002 Proc. Swedish Society for Automated Image Analysis  inproceedings  
Lenz, R. Spaces of Spectral Distributions and Their Natural Geometry 2002 Proc. CGIV-2002, First European Conference on Colour in Graphics,
Imaging and Vision, pp. 249-254 		 inproceedings  
Lenz, R. Two Stage Principal Component Analysis of Color 2002 IEEE Transactions Image Processing
Vol. 11(6), pp. 630-635 		 article  
Lenz, R. Li(e)ght 2002 Proc. Swedish Society for Automated Image Analysis  inproceedings  
Tran, L.V. & Lenz, R. Color Invariant Features for Dielectric Materials 2002 Proc. Swedish Society for Automated Image Analysis  inproceedings  
Tran, L. & Lenz, R. Spaces of probability distributions and their applications to color-based image database search 2002
Vol. 4421Proc. SPIE - Int. Soc. Opt. Eng. (USA), pp. 543-6 		 inproceedings  
Fayyazi, A. & Lenz, R. Duplex board layer segmentation 2001 Proc. Swedish Society for Automated Image Analysis  inproceedings  
Lenz, R. A geometric foundation of Colorimetry 2001 Ninth Color Imaging Conference, pp. 46-51  inproceedings  
Lenz, R. Estimation of Illumination Characteristics 2001 IEEE Transactions Image Processing
Vol. 10(7), pp. 1031-1038 		 article URL 
Lenz, R. & Kruse, B. NFR Årsbok 2001 2001 Med färg i blicken  inbook  
Lenz, R. Colorimetry from geometry 2001 Proc. 3rd Int. Conf. Multispectral Color Science  inproceedings  
Toivanen, P. & Lenz, R. On distance transforms for multispectral images 2001 Proc. 3rd Int. Conf. Multispectral Color Science  inproceedings  
Toivanen, P. & Lenz, R. On the Properties of Gray-scale Distance Transforms 2001 Proc. 12th Scandinavian Conference on Image Analysis  inproceedings  
Tran, L.V. & Lenz, R. PCA-based representation of color distributions for color based
image retrieval		 2001 Proc. International Conference Image Processing 2001, pp. 697-700  inproceedings  
Tran, L.V. & Lenz, R. Comparison of quadratic form based color indexing methods 2001 Proc. Swedish Society for Automated Image Analysis  inproceedings  
Yang, L., Lenz, R. & Kruse, B. Light scattering and ink penetration effects on tone reproduction 2001 Journal of the Optical Society of America A (Optics, Image Science and Vision)
Vol. 18(2)J. Opt. Soc. Am. A, Opt. Image Sci. Vis. (USA), pp. 360-6 		 article  
Hauta-Kasari, M., Wenjun, W., Miyazawa, K., Toyooka, S., Lenz, R., Parkkinen, J. & Jääskeläinen, T. Computational Technique to Design Color Filters for Optical Pattern
Recognition		 2000
Vol. 3The 9th Finnish Artificial Intelligence Conference, STeP 2000, Espoo,
Finland, pp. 151-158 		 inproceedings  
Lenz, R. Color edge detectors for conical color spaces 2000 Proc. Int. Conf. Color in Graphics an Image Processing, pp. 284-289  inproceedings  
Lenz, R. Lie-Theory and Dynamical Illumination Changes 2000 : Algebraic Frames for the Perception-Action Cycle
Vol. 1888Proc. Algebraic Frames for the Perception-Action Cycle, pp. 218-228 		 inproceedings DOI URL 
Lenz, R. Lie-Light tracking 2000 Proc. Norsig 2000, pp. 379-382  inproceedings  
Lenz, R. On Color Edge Detection 2000 Proc. Image Processing, Image Quality, Image Capture Systems Conference, pp. 278-282  inproceedings  
Tran, L.V. & Lenz, R. Metric structures in probability spaces: applications to color based
search		 2000 Proc. Swedish Society for Automated Image Analysis, pp. 21-24  inproceedings  
Tran, L.V. & Lenz, R. Measuring distances between color distributions 2000 Proc. Int. Conf. Color in Graphics an Image Processing, pp. 256-260  inproceedings  
Yang, L., Kruse, B. & Lenz, R. Light Scattering and Ink Penetration Effects on Tone Reproduction 2000 Proc. Image Processing, Image Quality, Image Capture Systems Conference, pp. 225-230  inproceedings  
Yang, L., Kruse, B. & Lenz, R. A framework for describing optical dot gain and ink penetration 2000 Proc. Swedish Society for Automated Image Analysis, pp. 53-56  inproceedings  
Hauta-Kasari, M., Parkkinen, J. andJääskeläinen, T. & Lenz, R. Multi-spectral texture segmentation based on the spectral co-occurrence matrix 1999 Pattern Analysis and Applications
Vol. 2(4)Pattern Anal. Appl. (UK), pp. 275-84 		 article  
Lenz, R. & Tran, L.V. Statistical methods for automated colour normalization and colour
correction		 1999 Advances in Digital Printing  inproceedings  
Lenz, R., Meer, P. & Hauta-Kasari, M. Spectral-Based Illumination Estimation and Color Correction 1999 Color Research and Application
Vol. 24(2), pp. 98-111 		 article  
Lenz, R., Tran, L. & Meer, P. Moment based normalization of color images 1999 Proc. IEEE International Workshop on Multimedia Signal Processing, pp. 103-108  inproceedings  
Lenz, R. & Meer, P. Non-Euclidean structure of spectral color space 1999
Vol. 3826Proc. SPIE - Int. Soc. Opt. Eng. (USA), pp. 101-12 		 inproceedings  
Lenz, R. Steerable Filters and Invariant Recognition in Spacetime 1998
Vol. VProc. Int. Conf. Acc. Sp. Sig. Proc. 1998, pp. 2737-2740 		 inproceedings  
Lenz, R. & Meer, P. Spectral Color Representations: Color Correction, Database Search
and Maximum Entropy Printing		 1998 Proc. Swedish Society for Automated Image Analysis Symposium, Uppsala,
Sweden, pp. 9-12 		 inproceedings  
Lenz, R. & Granlund, G. If I had a fisheye I would not need $1,n$ or, Is hyperbolic
geometry useful in image processing?		 1998 Proc. Swedish Society for Automated Image Analysis Symposium, Uppsala,
Sweden, pp. 49-52 		 inproceedings  
Meer, P., Lenz, R. & Ramakrishna, S. Efficient invariant representations 1998 Int. J. Computer Vision
Vol. 26(2), pp. 137-152 		 article URL 
Hauta-Kasari, M., Parkkinen, J., T.Jääskeläinen & Lenz, R. Spectral based analysis of color images 1997
Vol. 2AIC Color 97, pp. 548-551 		 inproceedings  
Hauta-Kasari, M., Wang, W., Toyooka, S., Parkkinen, J. & Lenz, R. Unsupervised filtering of Munsell spectra 1997
Vol. 1Proc., The 3rd Asian Conference on Computer Vision,, pp. 248-255 		 inproceedings  
Lenz, R., Meer, P. & Hauta-Kasari, M. Spectral-Based Illumination Estimation and Color Image Normalization 1997
Vol. 2AIC Color 97, pp. 503-506 		 inproceedings  
Lenz, R. & Meer, P. Color Image Normalization through Illuminant Recovery 1997 Proc. Int. Conf. Accoustics Speech and Sig. Proc. 97, pp. 3141-3144  inproceedings  
Lenz, R., Meer, P. & Hauta-Kasari, M. Spectral-Based Illumination Estimation and Color Correction 1997 Proc. Swedish Society for Automated Image Analysis, pp. 159-163  inproceedings  
Lenz, R., Meer, P. & Hauta-Kasari, M. Spectral-Based Illumination Estimation and Color Correction 1997 Proc. 10th Scandinavian Conference on Image Analysis, pp. 885-892  inproceedings  
Lenz, R. & Svanberg, J. Group Theoretical Transforms and Statistical Properties of Image
Spaces		 1997 Signal and Image Representation in Combined Spaces  incollection  
Lenz, R. Some applications of representations of Lie algebras and Lie groups 1997 : Algebraic Frames for the Perception-Action Cycle
Vol. 1315/1997Algebraic Frames for the Perception-Action Cycle, pp. 114-125 		 inproceedings DOI URL 
Lenz, R. & Homma, K. Constructing iterative matching algorithms with the use of Lie theory: three-dimensional orientation example 1997 Journal of the Optical Society of America A (Optics, Image Science and Vision)
Vol. 14(8)J. Opt. Soc. Am. A, Opt. Image Sci. Vis. (USA), pp. 1734-41 		 article  
Assonov, M.V., Labunets, V.G., Lenz, R. & Labunets, E. Fast spectral algorithms for invariant pattern recognition and images
matching based on modular invariants		 1996
Vol. IIIProc. International Conference Image Processing, pp. 607-610 		 inproceedings  
Hauta-Kasari, M., Parkkinen, J. andJääskeläinen, T. & Lenz, R. Generalized co-occurrence matrix for multispectral texture analysis 1996
Vol. vol.2Proceedings of the 13th International Conference on Pattern Recognition, pp. 785-9 		 inproceedings  
Lenz, R. & Homma, K. Rotational Symmetry: The Lie group SO(3) and its representations 1996
Vol. IIIProc. International Conference Image Processing, pp. 203-206 		 inproceedings  
Lenz, R., Österberg, M., Hiltunen, J. andJääskeläinen, T. & Parkkinen, J. Unsupervised filtering of color spectra 1996 Journal of the Optical Society of America A (Optics, Image Science and Vision)
Vol. 13(7)J. Opt. Soc. Am. A, Opt. Image Sci. Vis. (USA), pp. 1315-24 		 article  
Lenz, R., Österberg, M., Hiltunen, J., TimoJääskeläinen & Parkkinen, J. Exploring color spaces with unsupervised filters and Gaussian Quadrature 1995 Proc. Swedish Society for Automated Image Analysis, pp. 49-52  inproceedings  
Lenz, R., Österberg, M., Hiltunen, J., TimoJääskeläinen & Parkkinen, J. Unsupervised Filtering of Color Spectra 1995 Proc. Scandinavian Conf. Image Analysis, pp. 803-810  inproceedings  
Lenz, R. & Svanberg, J. Group Theoretical Transforms and Their Applications in Image Coding 1995 Proc. Int. Conf. Accoustics, Speech and Sig. Proc.  inproceedings  
Lenz, R. & Österberg, M. Filtering: Invariance, Information Extraction and Learning 1995
Vol. 3Progress in Neural Networks, pp. 65-98 		 inproceedings  
Lenz, R. Investigation of Receptive Fields using Representations of Dihedral
Groups		 1995 Journal of Visual Communication and Image Representation
Vol. 6(3), pp. 209-227 		 article  
Österberg, M. & Lenz, R. On parallel selective principal component analysis 1995 Proc. 1995 Swedish Conference on Connectionism, pp. 67-76  inproceedings  
Lenz, R. Group Theoretical Transforms in Image Processing 1994 Current Topics in Pattern Recognition Research,1, pp. 83-106  incollection  
Lenz, R. & Österberg, M. Neural Networks for Unsupervised Linear Feature Extraction 1994 Connectionism in a broad perspective, pp. 139-148  incollection  
Lenz, R. & Meer, P. Experimental investigation of projection and permutation invariants 1994 Pattern Recognition Letters
Vol. 15(8), pp. 751-760 		 article URL 
Lenz, R. & Meer, P. Point configuration invariants under simultaneous projective and permutation transformations 1994 Pattern Recognition
Vol. 27(11), pp. 1523-1532 		 article URL 
Meer, P., Ramakrishna, S. & Lenz, R. Correspondence of coplanar features through $P2$-invariant representations 1994 Lecture Notes in Computer Science
Vol. 825LNCS-825, pp. 473-492 		 inproceedings URL 
Meer, P., Ramakrishna, S. & Lenz, R. Correspondence of coplanar features through p2-invariant representations 1994
Vol. vol.1Proceedings of the 12th IAPR International Conference on Pattern Recognition (Cat. No.94CH3440-5), pp. 196-200 		 inproceedings  
Österberg, M. & Lenz, R. Unsupervised Parallel Feature Extraction from First Principles 1994 Advances in Neural Information Processing Systems 6, pp. 136-144  inproceedings  
Österberg, M. Quality Functions for Parallel Selective Principal Component Analysis 1994 School: Linköping University  phdthesis  
Lenz, R. & Meer, P. Projection and Permutation Invariant Object Recognition 1993 Proc. of the 8th Scandinavian Conference on Image Analysis, pp. 389-396  inproceedings  
Lenz, R. On $P^2$ Invariance 1993 Proc. of the Swedish Society for Automated Image Analysis Symposium,
Gothenburg, Sweden 		 inproceedings  
Lenz, R. Using Representations of the Dihedral Groups in the Design of Early Vision Filters 1993 Proc. Int. Conf. Accoustics, Speech and Sig. Proc., pp. V165-V168  inproceedings  
Meer, P., Ramakrishna, S. & Lenz, R. Indexing power of the projective/permutation invariant of five coplanar
points		 1993 Applications of Invariance in Computer Vision II, pp. 133-150  inproceedings  
Seger, O. Model building and restoration with applications in confocal microscopy 1993 School: Linköping University  phdthesis  
Lenz, R. & Seger, O. Group Theoretical Methods in 3-D Image Processing 1992 Leading Edge of Super Light Microscopy, Tokyo, 1992  inproceedings  
Lenz, R. & Österberg, M. A Method for unsupervised linear feature extraction using fourth order moments 1992 Proc. Swedish Society for Automated Image Analysis Symposium, Uppsala,
Sweden 		 inproceedings  
Lenz, R. & Seger, O. Group Theoretical Methods in Image Science 1992 New Trends on Scanning Optical Microscopy, OITDA Workshop, Naha,
Japan, 1992, pp. 161-166 		 inproceedings  
Lenz, R. Group Theoretical Feature Extraction: Weighted Invariance and Texture
Analysis		 1992 Selected Papers from the 7th Scandinavian Conference on Image Analysis, pp. 63-70  incollection  
Lenz, R. & Österberg, M. Computing the Karhunen-Loéve expansion with a parallel, unsupervised
filter system		 1992 Neural Computation
Vol. 4, pp. 382-392 		 article  
Lenz, R. & Osterberg, M. A new method for unsupervised linear feature extraction, using fourth-order moments 1992 Pattern Recognition Letters
Vol. 13(12), pp. 827-836 		 article URL 
Lenz, R. & Österberg, M. A new method for unsupervised linear feature extraction, using fourth order moments 1992 Proceedings. 11th IAPR International Conference on Pattern Recognition. Vol.II. Conference B: Pattern Recognition Methodology and Systems, pp. 71-4  inproceedings  
Seger, O. & Lenz, R. Anisotropic Image Restoration 1992 Proc. Swedish Society for Automated Image Analysis Symposium, Uppsala,
Sweden 		 inproceedings  
Seger, O. & Lenz, R. Experiments with on operator model of a confocal microscope 1992 Proc of SPIE conference on Biomedical Image Processing III and 3-D
Microscopy, San Jose, USA 		 inproceedings  
Seger, O. & Lenz, R. Modeling of the point spread function of laser scanning microscopes using canonical transforms 1992 Journal of Visual Communication and Image Representation
Vol. 3(4), pp. 364-380 		 article  
Lenz, R. & Österberg, M. A parallel learning filter system that learns the KL-expansion from examples 1991 Proc. First IEEE-SP Workshop on Neural Networks for Signal Processing
(Sept. 91) 		 inproceedings  
Lenz, R. Group Theoretical Feature Extraction: Weighted Invariance and Texture
Analysis		 1991 Proc. Swedish Society for Automated Image Analysis Symposium, Stockholm,
Sweden 		 inproceedings  
Lenz, R. Group Theoretical Feature Extraction: Weighted Invariance and Texture
Analysis		 1991 7th Scandinavian Conference on Image Analysis  inproceedings  
Lenz, R. & Österberg, M. Learning filter systems with maximum correlation and maximum separation properties 1991
Vol. 1469Proc. SPIE - Int. Soc. Opt. Eng. (USA), pp. 784-95 		 inproceedings  
Lenz, R. On probabilistic invariance 1991 Neural Networks
Vol. 4(5), pp. 627-641 		 article URL 
Magnusson, M., Lenz, R. & Danielsson, P.-E. Evaluation of methods for shaded surface display of CT-volumes 1991 Computerized Medical Imaging and Graphics
Vol. 15(4), pp. 247-256 		 article  
Österberg, M. & Lenz, R. Learning Filter Systems: Recent Developments and New Experiments 1991 Proc. Swedish Society for Automated Image Analysis Symposium, Stockholm,
Sweden 		 inproceedings  
Österberg, M. & Lenz, R. Learning Filter Systems: Basic principles and some applications 1991 7th Scandinavian Conference on Image Analysis  inproceedings  
Seger, O. & Lenz, R. Modelling a confocal microscope with operator methods 1991 Proc. Swedish Society for Automated Image Analysis Symposium, Stockholm,
Sweden 		 inproceedings  
Lenz, R. A Group Theoretical Investigation of Motion 1990 Proc. Swedish Society for Automated Image Analysis Symposium, Linköping,
Sweden 		 inproceedings  
Lenz, R. & Österberg, M. Learning Filter Systems 1990 Proc. Swedish Society for Automated Image Analysis Symposium, Linköping,
Sweden 		 inproceedings  
Lenz, R. & Österberg, M. Learning Filter Systems 1990 Proc. Int. Neural Networks Conference, Paris  inproceedings  
Lenz, R. & Seger, O. A review of operator methods in Fourier optics 1990 Proc. Micro 90; Transactions of the Royal Microscopical Society, pp. 243-246  inproceedings  
Lenz, R. & Österberg, M. Learning Filter Systems 1990 Proc. Int. Joint Conference on Neural Networks, San Diego  inproceedings  
Lenz, R. Group Theoretical Methods in Image Processing 1990   book  
Lenz, R. Group invariant pattern recognition 1990 Pattern Recognition
Vol. 23(1-2), pp. 199-217 		 article URL 
Grönqvist, A. & Lenz, R. Detection of Blood Vessels in 3-D MR-Images 1989 Proc. of the Swedish Society for Automated Image Analysis Symposium,
Gothenburg, Sweden 		 inproceedings  
Grönqvist, A. & Lenz, R. Detection of Blood Vessels in 3-D MR-Images 1989 Proc. of the 1989 IEEE/INNS International Joint Conference on Neural
Nets 		 inproceedings  
Lenz, R. & Österberg, M. Adaptive, Invariant Filter Systems 1989 Proc. of the Swedish Society for Automated Image Analysis Symposium,
Gothenburg, Sweden 		 inproceedings  
Lenz, R. A Group Theoretical Approach to Filter Design 1989 Proc. Int. Conf. Accoustics, Speech and Sig. Proc.  inproceedings  
Lenz, R. Describing and recognizing group-invariant pattern classes with group-sampling 1989 Pattern Recognition Letters
Vol. 9(3), pp. 169-173 		 article URL 
Lenz, R. Group-theoretical model of feature extraction 1989 Journal of the Optical Society of America A (Optics and Image Science)
Vol. 6(6)J. Opt. Soc. Am. A, Opt. Image Sci. (USA), pp. 827-34 		 article  
Lenz, R. A group theoretical approach to filter design 1988 Proc. of the Swedish Society for Automated Image Analysis Symposium,
Lund, Sweden 		 inproceedings  
Magnusson, M., Lenz, R. & Danielsson, P.-E. A comparison of some shaded surface display methods 1988 Proc. of the Swedish Society for Automated Image Analysis Symposium,
Lund, Sweden 		 inproceedings  
Magnusson, M., Lenz, R. & Danielsson, P.-E. Evaluation of methods for shaded surface display of CT-volumes 1988 9th International Conference on Pattern Recognition (IEEE Cat. No.88CH2614-6), pp. 1287-94  inproceedings  
Lenz, R. & Gudmundsson, B. 3-D Image Processing and Display - A Survey 1987 ACTA Stereologica
Vol. 6, Suppl. I, pp. 137-142 		 article  
Lenz, R. Optimal filters for the detection of linear patterns in 2-D and higher dimensional images 1987 Pattern Recognition
Vol. 20(2), pp. 163-172 		 article URL 
Lenz, R. Rotation-invariant operators and scale-space filtering 1987 Pattern Recognition Letters
Vol. 6(3), pp. 151-154 		 article URL 
Lenz, R. Reconstruction, Processing and Display of 3D-Images 1986 School: Linköping University, Sweden  phdthesis  
Lenz, R. Experiments in 3-D Image Processing 1986 Proc. of the Swedish Society for Automated Image Analysis Symposium,
Uppsala, Sweden 		 inproceedings  
Lenz, R. 3-D Reconstruction with a Projection onto Convex Sets Algorithm 1986 Optics Communications
Vol. 57(1), pp. . 		 article  
Lenz, R., Gudmundsson, B., Lindskog, B. & Danielsson, P.E. Display of Density Volumes 1986 IEEE Computer Graphics and Applications
Vol. 6(7), pp. 20-29 		 article  
Lenz, R., Gudmundsson, B. & Lindskog, B. Manipulation and display of 3-D images for surgical planning 1986
Vol. 593Proc. SPIE - Int. Soc. Opt. Eng. (USA), pp. 96-102 		 inproceedings  
Lenz, R. 3-D reconstruction with a projection onto convex sets algorithm 1986 Optics Communications
Vol. 57(1)Opt. Commun. (Netherlands), pp. 21-5 		 article  
Lenz, R. Rotation-invariant operators for 2D and higher dimensional images 1986 Advances in Image Processing and Pattern Recognition. Proceedings of the International Conference, pp. 164-8  inproceedings  
Lenz, R. Rotation-invariant operators 1986 Eighth International Conference on Pattern Recognition. Proceedings (Cat. No.86CH2342-4), pp. 1130-2  inproceedings  
Carlsson, K., Liljeborg, A., Majlöf, L., N.Åslund, Danielsson, P.E. & Lenz, R. Three-dimensional Microscopy using a Confocal Laser Scanning Microscope 1985 Optics Letters
Vol. 10, pp. 53-55 		 article  
Lenz, R. 3-D Filters for Noise Reduction and 3-D Display 1985 Proc. of the Swedish Society for Automated Image Analysis Symposium,
Stockholm, Sweden 		 inproceedings  
Lenz, R., Danielsson, P.-E. & Cronström, S. Application of 3-D Thinning and Filtering in the Display of 3-D
Images		 1985 Proc. of the 4th Scandinavian Conference on Image Analysis, Trondheim,
Norway 		 inproceedings  
Lenz, R., Danielsson, P.-E., Gudmundsson, B. & Edholm, P. Experiments in Processing and Display of 3D Radiography Images 1985 Proc. XIV ICMBE and VII ICMP, Espoo, Finland  inproceedings  
Lenz, R. Processing and Presentation of 3D-images 1984 Proc. of the International Symposium on Medical Images and Icons,
Arlington, Virginia, USA 		 inproceedings  
Lenz, R. Processing and Presentation of 3-D volumes 1984 Proc. of the Swedish Society for Automated Image Analysis Symposium,
Linköping 		 inproceedings  
Lenz, R., Danielsson, P.-E., Cronström, S. & Gudmundsson, B. Presentation and Perception of 3D-images 1984 NATO-ASI, Pictorial Information Systems in Medicine, Braunlage, West-Germany  inproceedings  
Lenz, R., Danielsson, P.-E. & Gudmundsson, B. Interactive display of 3D-images in PICAP II 1984
Vol. 507Proc. SPIE - Int. Soc. Opt. Eng. (USA), pp. 19-24 		 inproceedings  
Lenz, R., Danielsson, P.-E., Crontstrom, S., Gudmundsson, B. & Edholm, P. Presentation and perception of 3D-images 1984 Seventh International Conference on Pattern Recognition (Cat. No. 84CH2046-1), pp. 749-51  inproceedings  
Reinhardt, E., Lenz, R., Greiner, W. & Schenk, U. Diagnostic Relevance of Visually non Suspect Cells for Cancer Diagnosis 1982 Int. Conf. High Resolution Cell Image Analysis, Los Angeles  inproceedings  
Reinhardt, E., Schwarzmann, P. & Lenz, R. Satellite Image Analysis 1982 Solar Radiation Data Series F, Vol. 2, pp. 288 - 292  inproceedings  
Reinhardt, E., Blanz, W., Erhardt, R., Greiner, W., Hornstein, B., Kringler, W., Lenz, R., Schimpf, I., Schlipf, W., Schwarzmann, P., Strassle, G. & Bloss, W. Automated classification of cytological specimen based on multistage pattern recognition 1982 Proceedings of the 6th International Conference on Pattern Recognition, pp. 153-9  inproceedings  
Blanz, W., Lenz, R. & Reinhardt, E. Allgemeiner Ansatz zur Bildsegmentation 1981 DFG-Schwerpunktprogram Digitale Signalverarbeitung. Göttingen  inproceedings  
Reinhardt, E., Laub, G. & Lenz, R. Rekonstruktion von Schichtbildern mit Hilfe inkohärent-optischer
Abbildungssysteme		 1980 Tagung Erzeugung und Analyse von Bildern und Strukturen  inproceedings  

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