Dr. Jan Klein

Publications

2012

Sebastiano Barbieri, Miriam H.A. Bauer, Jan Klein, Jan Moltz, Christopher Nimsky, Horst K. Hahn
DTI Segmentation via the Combined Analysis of Connectivity Maps and Tensor Distances
To appear: Journal of NeuroImage, 2012, DOI: 10.1016/j.neuroimage.2012.01.076

Jan Klein, Florian Weiler, Sebastiano Barbieri, Jochen G. Hirsch, Benjamin Geisler, Horst K. Hahn
Novel Features of NeuroQLab - A Software Assistant for Evaluating Neuroimaging Data
To appear: Proceedings of European Congress on Radiology (ECR 2012), Vienna, Austria, 2012

Jan Klein, Benjamin Köhler, Horst K. Hahn
Efficient global fiber tracking on multidimensional diffusion direction maps
To appear: Proceedings of SPIE Medical Imaging 2012, Vol. 8314, San Diego, USA, 2012

Romy Henze, Romuald Brunner, Ulf Thiemann, Peter Parzer, Jan Klein, Franz Resch, Bram Stieltjes
The optic radiation and the cerebellar peduncles in adolescents with first-admission schizophrenia – a diffusion tensor imaging study
To appear: Journal of Neuroimaging, 2012, DOI: 10.1111/j.1552-6569.2011.00668.x

Dirk Simon, Klaus H. Fritzsche, Christian Thieke, Jan Klein, Peter Parzer, Marc-Andre Weber, Bram Stieltjes
Diffusion weighted imaging based probabilistic segmentation of high- and low-proliferative areas in high grade gliomas
To appear: Cancer Imaging, 2012

2011

Sebastiano Barbieri, Miriam H.A. Bauer, Jan Klein, Christopher Nimsky, Horst K. Hahn
Analyzing the Accuracy of Fiber Tracking in Infiltrated Regions via Tumor Growth Simulation
In: IEEE Visualization, Working with Uncertainty Workshop: Representation, Quantification, Propagation, Visualization, and Communication of Uncertainty, Providence, Rhode Island, USA, 2011

Jan Klein, Jean Favre, Gabriel Zachmann
IEEE Visualization Contest 2011 and 2012 - Review and Preview
In: IEEE VisWeek 2011, Providence, Rhode Island, USA, 2011

Florian Weiler, Jan Klein, Horst K. Hahn
Towards interactive exploration of DTI data (pdf)
In: Proceedings of the 10th Annual Meeting of the German Society of Computer- and Robot- Assisted Surgery (CURAC 2011), Magdeburg, Germany, October, 2011

Jan Klein, Florian Weiler, Sebastiano Barbieri, Jochen G. Hirsch, Benjamin Geisler, Horst K. Hahn
NeuroQLab - An Extendible Software Assistant for Efficient and Reproducible Evaluation of Neuroimaging Data (pdf)
In: Proceedings of European Congress on Radiology (ECR 2011), Vienna, Austria, 2011

Sebastiano Barbieri, Miriam H.A. Bauer, Jan Klein, Christopher Nimsky, Horst K. Hahn
Segmentation of Fiber Tracts Based on an Accuracy Analysis on Diffusion Tensor Software Phantoms
In: Journal of NeuroImage, Vol. 55, Issue 2, pages 532-544, Elsevier, 2011, DOI: 10.1016/j.neuroimage.2010.12.069

2010

Amit Chourasia, Gabriel Zachmann, Jan Klein
IEEE Visualization Contest 2010 and 2011 - Review and Preview (pdf)
In: IEEE VisWeek 2010, Salt Lake City, USA, 2010

Frauke Fink, Jan Klein, Michael Lanz, Tibor Mitrovics, Markus Lentschig, Horst Hahn, Helmut Hildebrandt
Comparison of Diffusion Tensor-Based Tractography and Quantified Brain Atrophy for Analysing Demyelination and Axonal Loss in MS
In: Journal of Neuroimaging, Vol. 20, Issue 4, pages 334-344, 2010, DOI: 10.1111/j.1552-6569.2009.00377.x

Sebastiano Barbieri, Miriam H.A. Bauer, Jan Klein, Christopher Nimsky, Horst K. Hahn
A Variational, Non-Parametric Approach to the Fuzzy Segmentation of Diffusion Tensor Images (pdf)
In: Proc. of MICCAI workshop on Computational Diffusion MRI (CDMRI 2010), pages 134-145, Beijing, China, 2010

Jan Klein, Sebastiano Barbieri, Hannes Stuke, Miriam Bauer, Jan Egger, Christopher Nimsky, Horst K. Hahn
On the Reliability of Diffusion Neuroimaging (pdf)
In: Neuroimaging (book chapter), pages 1-24, ISBN 978-953-307-127-5, Sciyo, 2010

Frauke Fink, Eva Rischkau, Martina Butt, Jan Klein, Paul Eling, Helmut Hildebrandt
Efficacy of an executive function intervention program in MS: A placebo-controlled and pseudo-randomised trial
In: Journal of Multiple Sclerosis, Vol. 16(9), pages 1148-1151, 2010, DOI: 10.1177/1352458510375440

Günther C. Feigl, Rainer Ritz, Mario Moraes, Jan Klein, Kristofer Ramina, Alireza Gharabaghi, Boris Krischek, Soeren Danz, Antje Bornemann, Marina Liebsch, Marcos S. Tatagiba
Resection of malignant brain tumors in eloquent cortical areas: a new multimodal approach combining 5-aminolevulinic acid and intraoperative monitoring
In: Journal of Neurosurgery (JNS), Vol. 113(2), pages 352-357, 2010, DOI: 10.3171/2009.10.JNS09447

Miriam Bauer, Sebastiano Barbieri, Jan Klein, Jan Egger, Daniela Kuhnt, Horst K. Hahn, Bernd Freisleben, Christopher Nimsky
Boundary Estimation of Fiber Bundles Derived from Diffusion Tensor Images
Online first: International Journal of Computer Assisted Radiology and Surgery (IJCARS), 2010, DOI: 10.1007/s11548-010-0423-x

Miriam Bauer, Jan Egger, T. O'Donnell, Sebastiano Barbieri, Jan Klein, Horst K. Hahn, Bernd Freisleben, Christopher Nimsky
Fast and Robust Graph-based Approach for Boundary Estimation of Fiber Bundles Based on Fractional Anisotropy Maps
In: Proceedings of 20th International Conference on Pattern Recognition (ICPR 2010), pages 4016-4019, 2010, DOI: 10.1109/ICPR.2010.1155

Miriam Bauer, Sebastiano Barbieri, Jan Klein, Jan Egger, Daniela Kuhnt, Horst K. Hahn, Bernd Freisleben, Christopher Nimsky
A Ray-based Approach for Boundary Estimation of Fiber Bundles derived from Diffusion Tensor Imaging
In: International Journal of Computer Assisted Radiology and Surgery, Vol. 5, Suppl. 1, pages 47-48, Springer Berlin Heidelberg, DOI: 10.1007/s11548-010-0438-3

Jan Klein, Peter Erhard, Horst K. Hahn
Resolution-Dependent Differences in Fiber Tracking and Quantification
of the Visual Pathways (pdf)
In: Proceedings of the Joint Annual Meeting ISMRM-ESMRMB 2010, page 1660, Stockholm, Sweden, 2010

Sebastiano Barbieri, Jan Klein, Christopher Nimsky, Horst K. Hahn
Towards Image-Dependent Safety Hulls for Fiber Tracking (pdf)
In: Proceedings of the Joint Annual Meeting ISMRM-ESMRMB 2010, page 1672, Stockholm, Sweden, 2010

Frauke Fink, Paul Eling, Eva Rischkau, Nicole Beyer, Bernd Tomandl, Jan Klein, Helmut Hildebrandt
The association between California Verbal Learning Test performance and fibre impairment in multiple sclerosis: evidence from diffusion tensor imaging
In: Journal of Multiple Sclerosis, Vol. 6, Nr. 3, pages 332-341, 2010, DOI: 10.1177/1352458509356367

Jan Klein, Mike Scholl, Alexander Köhn, Horst K. Hahn
Real-time fiber selection using the Wii remote (pdf)
In: Proceedings of SPIE Medical Imaging 2010, Vol. 7625, pages 76250N-1-76250N-8, San Diego, USA, 2010, DOI: 10.1117/12.843203

Jan Klein, Adrian Grötsch, Daniel Betz, Sebastiano Barbieri, Ola Friman, Bram Stieltjes, Helmut Hildebrandt, Horst K. Hahn
Qualitative and quantitative analysis of probabilistic and deterministic fiber tracking (pdf)
In: Proceedings of SPIE Medical Imaging 2010, Vol. 7623, pages 76232A-1-76232A-8, San Diego, USA, 2010, DOI: 10.1117/12.843472

Sebastiano Barbieri, Jan Klein, Christopher Nimsky, Horst K. Hahn
Assessing fiber tracking accuracy via diffusion tensor software models (pdf)
In: Proceedings of SPIE Medical Imaging 2010, Vol. 7623, pages 762326-1-762326-9, San Diego, USA, 2010, DOI: 10.1117/12.844215

Dörte Apelt, Hans Strasburger, Jan Klein, Bernhard Preim
Impact of adaptation time on contrast sensitivity (pdf)
In: Proceedings of SPIE Medical Imaging 2010, Vol. 7627, pages 76270P-1-76270P-8, San Diego, USA, 2010, DOI: 10.1117/12.845241

Barbara Bellenberg, Sebastian Schimrigk , Kerstin Brück, Jan Klein, Horst K. Hahn, Odo Köster, Carsten Lukas
Grey and white matter atrophy in MS: Associations to corticospinal tract degeneration and upper spinal cord atrophy are restricted to relapsing-remitting MS
In: European Radiology Supplements, Springer Berlin / Heidelberg, 2010

2009

Jan Klein, Ola Friman, Markus Hadwiger, Bernhard Preim, Felix Ritter, Anna Vilanova, Gabriel Zachmann, Dirk Bartz
Visual Computing for Medical Diagnosis and Treatment (pdf)
In: Journal of Computers & Graphics, Vol. 33 (4), pages 554-565, Elsevier, ISSN 0097-8493, 2009, DOI: 10.1016/j.cag.2009.04.006

Frederik Laun, Lothar R. Schad, Jan Klein, Bram Stieltjes
How background noise shifts eigenvectors and increases eigenvalues in DTI (pdf)
In: Journal of Magnetic Resonance Materials in Physics, Biology and Medicine (MAGMA), Vol. 22(3), pages 151-158, 2009, DOI: 10.1007/s10334-008-0159-6

Dörte Apelt, Hans Strasburger, Richard Rascher-Friesenhausen, Jan Klein, Bernhard Preim
Generalizing the Evaluation of Medical Image Processing Tools by Use of Gabor Patterns
In: Journal of Methods of Information in Medicine, Vol. 48(4), pages 331-335, 2009, DOI: 10.3414/ME9231

Helmut Hildebrandt, Frauke Fink, Jan Klein, Bernd Tomandl
DTI und Hirnatrophie in der Darstellung der Neuropathologie von MS (pdf)
In: Der Nervenarzt, Springer Berlin / Heidelberg, ISSN 0028-2804, Vol. 80, Suppl. 1, pages 6-7, 2009, DOI: 10.1007/s00115-009-2760-y

Florian Weiler, Jan Rexilius, Jan Klein, Horst K. Hahn
NeuroQLab - A Software Assistant for Neurosurgical Planning and Quantitative Image Analysis (pdf)
In: Lecture Notes in Informatics (LNI), Informatik 2009, 2nd Workshop on Software Assistants in Medicine 2009, pages 1485-1491, October 1st, Luebeck, Germany, 2009

Dirk Simon, Jan Klein, Jan Rexilius, T. Re, A. Lemke, Frederik Laun, Bram Stieltjes
A Software Tool to automatically evaluate and quantify Diffusion Weighted Images (pdf)
In: Proceedings of 11th World Congress on Medical Physics and Biomedical Engineering, pages 1194-1197, September 7-12, Munich, Germany, 2009, DOI: 10.1007/978-3-642-03882-2_317

Dirk Simon, Jan Klein, Jan Rexilius, Bram Stieltjes
Objective Tumour Heterogeneity Determination in Gliomas (pdf)
In: Proceedings of SPIE Medical Imaging 2009, Vol. 7260, pages 72601X-1 - 72601X-9, Orlando, USA, 2009, DOI: 10.1117/12.812521

Alexander Köhn, Jan Klein, Florian Weiler, and Heinz-Otto Peitgen
A GPU-based Fiber Tracking Framework using Geometry Shaders (pdf)
In: Proceedings of SPIE Medical Imaging 2009, Vol. 7261, pages 72611J-1 -72611J-10, Orlando, USA, 2009, DOI: 10.1117/12.812219

Dörte Apelt, Hans Strasburger, Richard Rascher-Friesenhausen, Jan Klein, Bernhard Preim, and Heinz-Otto Peitgen
Recognition of Detail in Mammography (pdf)
In: Proceedings of SPIE Medical Imaging 2009, Vol. 7263, pages 72631B-1 - 72631B-8, Orlando, USA, 2009, DOI: 10.1117/12.810237

Dörte Apelt, Richard Rascher-Friesenhausen, Jan Klein, Hans Strasburger, Bernhard Preim and Heinz-Otto Peitgen
Impact of Luminance Distribution in the Visual Field on Foveal Contrast Sensitivity in the Context of Mammographic Softcopy Reading (pdf)
In: Proceedings of SPIE Medical Imaging 2009, Vol. 7263, pages 72630B-1 - 72630B-9, Orlando, USA, 2009, DOI: 10.1117/12.810227

Dörte Apelt, Hans Strasburger, Richard Rascher-Friesenhausen, Jan Klein, Bernhard Preim, Heinz-Otto Peitgen
Contrast Sensitivity in Mammographic Softcopy Reading (pdf)
In: Proceedings of SPIE Medical Imaging 2009, Vol. 7263, pages 726318-1 - 726318-11, Orlando, USA, 2009, DOI: 10.1117/12.810221

B. Bellenberg, S. Schimrigk, K. Brück, C. Tönnes, A. Chan, J. Klein, H. Hahn, O. Köster, C. Lukas
Third ventricle enlargement correlates to different patterns of regional fiber integrity in the corpus callosum of relapsing-remitting and secondary progressive multiple sclerosis patients (pdf)
In: Multiple sclerosis, Vol. 15(9), pages 91-92, Proceedings of the 25th Congress of the European Committee for Treatment and Research in Multiple Sclerosis (ECTRIMS 2009), Duesseldorf, Germany, September, 2009

2008

Jan Klein, Frederik Laun, Peter Erhard, Volker Diehl, Horst. K. Hahn
On the Reliability of Quantitative Volumetric and Structural Neuroimaging (pdf)
In: Journal of Imaging Decisions MRI, Vol. 12(3), pages 2 - 10, Wiley-Blackwell, 2008, DOI: 10.1111/j.1617-0830.2009.00128.x

Dirk Simon, Jan Klein, Jan Rexilius, Bram Stieltjes
Towards User-Independent ADC Quantification in Gliomas (pdf)
In: Proceedings of the 25th Annual Meeting of the European Society for Magnetic Resonance in Medicine and Biology (ESMRMB 2008), Valencia, Spain, October, 2008

Florian Weiler, Horst K. Hahn, Alexander Köhn, Ola Friman, Jan Klein, Heinz-Otto Peitgen
Dealing with Inaccuracies in Multimodal Neurosurgical Planning - A Preliminary Concept (pdf)
In: International Journal of Computer Assisted Radiology and Surgery, Vol. 3, Supl. 1, Springer Würzburg, pages 77-78, ISSN 1861-6410, 2008, DOI: 10.1007/s11548-008-0176-y

Bram Stieltjes, Jan Klein, Benjamin Hyman, L. Gill Naul, Val Runge, Marco Essig
Reproducible quantification of fiber integrity profiles in the cingulum and the fornix using an experimental 32 channel head coil (pdf)
In: Proceedings of the 16th ISMRM Scientific Meeting & Exhibition (ISMRM 2008), ISSN 1545-4428, Toronto, Canada, page 1842, May, 2008

Jan Klein, Dirk Bartz, Ola Friman, Markus Hadwiger, Bernhard Preim, Felix Ritter, Anna Vilanova, Gabriel Zachmann
Advanced Algorithms in Medical Computer Graphics (pdf, details)
In: Proceedings of Eurographics 2008, State-of-the-Art Report (EG-STAR'08), ISSN 1017-4656, Crete, Greece, pages 25-44, April, 2008

Jan Klein, Hannes Stuke, Bram Stieltjes, Olaf Konrad, Horst K. Hahn, Heinz-Otto Peitgen
Efficient Fiber Clustering using Parameterized Polynomials (pdf)
In: SPIE Medical Imaging 2008 (Visualization, Image-Guided Procedures, and Modeling), Vol. 6918, ISBN 978-0-8194-7102-4, pages 69182X-1-69182X-9, San Diego, USA, February, 2008, DOI: 10.1117/12.768925

Jan Klein, Hannes Stuke, Jan Rexilius, Bram Stieltjes, Horst K. Hahn, and Heinz-Otto Peitgen
Towards User-Independent DTI Quantification (pdf)
In: SPIE Medical Imaging 2008 (Image Processing), Vol. 6914, ISBN 978-0-8194-7098-0, San Diego, USA, pages 69142E-1-69142E-8, February, 2008, DOI: 10.1117/12.768763

Barbara Bellenberg, Carsten Lukas, Aiden Haghikia, Malte Fischer, Jan Klein, Horst K. Hahn, Christian Beste, Markus Hausmann, Odo Köster, Sebastian Schimrigk
Regional fiber degeneration in the corpus callosum monitored by fractional anisotropy correlates to FLAIR hypodensities and black holes in MS patients (pdf)
In: European Radiology Supplements, Vol. 18, Supl. 1, Springer Berlin / Heidelberg, ISSN 1613-3749, 2008

2007

Frauke Fink, Martina Butt, Jan Klein, Michael Lanz, Tibor Mitrovics, Helmut Hildebrandt
Correlation between executive functioning and the SLF in MS using diffusion measures (pdf, poster)
In: Z. Neuropsychol., 18 (2), 119, Verlag Hans Huber, Hogrefe AG, Bern, 2007

Alexander Köhn, Florian Weiler, Jan Klein, Olaf Konrad, Horst K. Hahn and Heinz-Otto Peitgen
State-of-the-Art Computer Graphics in Neurosurgical Planning and Risk Assessment (pdf, video, certificate)
In: Proceedings of Eurographics 2007 Short Papers, Prague, Czech Republic, pages 117-120, September, 2007
1. Prize of the Eurographics 2007 competition Medical Prize

Jan Klein, Anna Vilanova , Peter Ledochowitsch, Philip Bittihn, Horst K. Hahn, Olaf Konrad, Jan Rexilius, Heinz-Otto Peitgen
Improving Interaction and Perception of Brain Structure using Fiber Clustering (pdf)
In: SPIE Newsroom, pages 1-3, 2007, DOI: 10.1117/2.1200707.0771

Jan Klein, Mathias Schlüter, Jan Rexilius, Olaf Konrad, Peter Erhard, Bram Stieltjes, Matthias Althaus, Wolfgang Dreher, Dieter Leibfritz, Horst K. Hahn, Heinz-Otto Peitgen
Uncertainty and Reproducibility of Quantitative DTI and Fiber Tracking of the Human Brain (pdf)
In: Topics in Advanced Imaging, Vol. 6, BIS-Verlag Oldenburg, pages 61-64, ISBN 978-3-8142-2086-4, 2007

Jan Klein, Peter Erhard, Simon Hermann, Olaf Konrad, Horst K. Hahn, Dieter Leibfritz, Heinz-Otto Peitgen
Resolution-Dependent Differences in Fiber Tracking and Quantification (pdf, poster)
In: Proceedings of the Joint Annual Meeting ISMRM-ESMRMB 2007, Berlin, Germany, page 1555, May, 2007

Sandra Huff, Frederik B. Laun, Bram Stieltjes, Jan Klein, Horst K. Hahn, Lothar R. Schad
Optimized DTI for fibre bundles of known predominant orientation (pdf)
In: Proceedings of the Joint Annual Meeting ISMRM-ESMRMB 2007, Berlin, Germany, page 1505, May, 2007

Jan Klein, Simon Hermann, Olaf Konrad, Horst K. Hahn, Heinz-Otto Peitgen
Automatic Quantification of DTI Parameters along Fiber Bundles (pdf)
In: Proceeding of Image Processing for Medicine (BVM 2007), Munich, Germany, pages 272-276, March, 2007, DOI: 10.1007/978-3-540-71091-2_55

Jan Klein, Philip Bittihn, Peter Ledochowitsch, Horst K. Hahn, Olaf Konrad, Jan Rexilius, Heinz-Otto Peitgen
Grid-Based Spectral Fiber Clustering (pdf)
In: SPIE Medical Imaging 2007 (Visualization and Image-Guided Procedures), Vol. 6509, pages 65091E-1-65091E-10, San Diego, USA, February, 2007, DOI: 10.1117/12.706242

Jan Rexilius, Horst K. Hahn, Jan Klein, Markus G. Lentschig, Heinz-Otto Peitgen
Multispectral Brain Tumor Segmentation based on Histogram Model Adaptation (pdf)
In: SPIE Medical Imaging 2007 (Computer-Aided Diagnosis), Vol. 6514, pages 65140V-1-65140V-10, San Diego, USA, February, 2007, DOI: 10.1117/12.709410

2006

Alexander Köhn, Horst K. Hahn, Jan Klein, Jens Breitenborn, Uwe Siems, Tobias Böhler, Wilhelm Berghorn, Enrico Simonotto, Florian Link, Jan Rexilius, Rebecca Lund, Hartmut Jürgens, Heinz-Otto Peitgen
A Workflow Optimized Software Platform for Multimodal Neurosurgical Planning and Monitoring (pdf)
In: Proceedings of the 5th Annual Meeting of the German Society of Computer- and Robot- Assisted Surgery (CURAC 2006), Hannover, Germany, pages 44-46, October, 2006

Horst K. Hahn, Jan Klein, Christopher Nimsky, Jan Rexilius, Heinz-Otto Peitgen
Uncertainty in Diffusion Tensor Based Fibre Tracking (pdf)
In: Medical Technologies in Neurosurgery, Series: Acta Neurochirurgica Supplementum (Journal), Suppl. 98, Springer Verlag Wien, pages 33-41, ISBN 3-211-33302-9, September, 2006, DOI: 10.1007/978-3-211-33303-7_6

Jan Klein, Felix Ritter, Horst K. Hahn, Jan Rexilius, Heinz-Otto Peitgen
Brain Structure Visualization using Spectral Fiber Clustering (pdf, suppl, poster, video1, video2)
In: SIGGRAPH 2006, Research Poster, Boston, USA, August, 2006, DOI: 10.1145/1179622.1179816

Jan Klein, Horst K. Hahn, Jan Rexilius, Peter Erhard, Matthias Althaus, Dieter Leibfritz, Heinz-Otto Peitgen
Efficient Visualization of Fiber Tracking Uncertainty based on Complex Gaussian Noise (pdf, poster)
In: Proceedings of the 14th ISMRM Scientific Meeting & Exhibition (ISMRM 2006), Seattle, USA, page 2753, May, 2006

Thomas Dukatz, Ulrich Sure, J. Ivinska-Zelder, T. Beyer, Horst K. Hahn, Jan Klein, Ludwig Benes, Helmut Bertalanffy
White Matter Trajectories in Pre- and Postoperative DTI Examinations and Fiber Tracking for Patients with Brain Stem Cavernomas (pdf)
In: Proceedings of the 57th Annual Meeting of the German Society of Neurosurgery (DGNC 2006), Essen, Germany, May, 2006, DOI: 10.1016/j.clinph.2006.11.069

Rene Weller, Jan Klein, Gabriel Zachmann
A Model for the Expected Running Time of Collision Detection using AABB Trees (pdf)
In: Proceedings of the 12th Eurographics Symposium on Virtual Environments (EGVE'06), Lisbon, Portugal, pages 11-17, May, 2006

2005

Jan Klein
Efficient Collision Detection for Point and Polygon Based Models (thesis)
Ph.D. thesis, University of Paderborn, Germany, HNI-Schriftenreihe ISBN 3-939350-05-2, July, 2005

Jan Klein, Gabriel Zachmann
The Expected Running Time of Hierarchical Collision Detection (pdf, suppl, poster)
In: SIGGRAPH 2005, Research Poster, Los Angeles, USA, August, 2005, DOI: 10.1145/1186954.1187087

Jan Klein, Gabriel Zachmann
Interpolation Search for Point Cloud Intersection (pdf)
In: Proceedings of the 13-th International Conference in Central Europe on Computer Graphics, Visualization and Computer Vision'2005 (WSCG'2005), full paper, Plzen, Czech Republic, pages 163-170, January/Februrary, 2005

2004

Jan Klein, Gabriel Zachmann
Point Cloud Surfaces using Geometric Proximity Graphs (pdf)
In: Computers and Graphics (Journal), Vol. 28, No. 6, Elsevier, pages 839-850, December, 2004, DOI: 10.1016/j.cag.2004.08.012

Jan Klein, Jens Krokowski, Matthias Fischer, Michael Wand, Rolf Wanka, Friedhelm Meyer auf der Heide
The Randomized Sample Tree: A Data Structure for Interactive Walkthroughs in Externally Stored Virtual Environments (pdf)
In: Presence (Journal), Vol. 13, No. 6, The MIT Press, pages 617-637, December, 2004

Jan Klein, Gabriel Zachmann
Point Cloud Collision Detection (pdf, video)
In: Computer Graphics Forum (Proceedings of EUROGRAPHICS 2004), Vol. 23, No. 3, Grenoble, France, pages 567-576, August/September, 2004, DOI: 10.1111/j.1467-8659.2004.00788.x

Jan Klein, Gabriel Zachmann
Nice and Fast Implicit Surfaces over Noisy Point Clouds (pdf, suppl)
In: SIGGRAPH 2004, Sketches, Los Angeles, USA, August, 2004, DOI: 10.1145/1186223.1186329

Jan Klein, Gabriel Zachmann
Proximity Graphs for Defining Surfaces over Point Clouds (pdf)
In: Eurographics Symposium on Point-Based Grahics (SPBG'04), Zurich, Switzerland, pages 131-138, June, 2004

2003

Jan Klein, Gabriel Zachmann
ADB-Trees: Controlling the Error of Time-Critical Collision Detection (pdf, video)
In: Proceedings of the 8th International Fall Workshop Vision, Modeling, and Visualization 2003 (VMV 2003), Munich, Germany, pages 37-45, November, 2003

Jan Klein, Gabriel Zachmann
Time-Critical Collision Detection Using an Average-Case Approach (pdf, video)
In: Proceedings of ACM Symposium on Virtual Reality Software and Technology (VRST 2003), Osaka, Japan, pages 22-31, October, 2003, DOI: 10.1145/1008653.1008660

2002

 Jan Klein, Jens Krokowski, Matthias Fischer, Michael Wand, Rolf Wanka, Friedhelm Meyer auf der Heide
The Randomized Sample Tree: A Data Structure for Interactive Walkthroughs in Externally Stored Virtual Environments (pdf, video-1, video-2)
In: Proceedings of ACM Symposium on Virtual Reality Software and Technology (VRST 2002), Hong Kong, China, pages 137-146, November, 2002, DOI: 10.1145/585740.585764

Nicolas Cuntz, Jan Klein, Jens Krokowski
Realtime Navigation in Highly Complex 3D-Scenes Using JPEG Compression (pdf)
In: Proceedings of 4. GI-Informatiktage 2002, Bad Schussenried, Germany, pages 224-229, November, 2002

2001

Jan Klein, Matthias Fischer
Occlusion Culling for Virtual Environments based on the 3D-Sectorgraph (pdf)
In: Proceedings of 3. GI-Informatiktage 2001, Bad Schussenried, Germany, pages 275-278, November, 2001

Jan Klein
Occlusion Culling in virtuellen Umgebungen mittels 3D-Sektorengraphen
In: Diploma thesis, University of Paderborn, Germany, May, 2001