Position: Senior Research Scientist
Location: Stack B, Custom House Quay
Email: knorrs(at)scss.tcd.ie
Phone: +49.178.172.4110
Skype: sknorri
Web: Personal Webpage

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Content

Biography
Research Topics
Publications

Biography

Dr. Sebastian Knorr is senior research scientist at the Trinity College Dublin, Ireland, and working on research activities in virtual reality and light field technologies within the V-Sense project. Before he joint the V-Sense group, he was the CEO of imcube labs GmbH, Germany and Beijing imcube Technologies Co., Ltd., China, and the COO/ CTO of imcube Technologies Limited, Hong Kong.
Besides the management of the companies, Sebastian also worked on 3D TV and giant screen projects from BBC and BSkyB as Post-Conversion Stereographer and Stereo 3D Producer. His interests as scientists are in the field of computer vision, video analysis, 3D image processing and immersive media, in particular virtual reality applications.
Between 2002 and 2009, Sebastian acted as project manager and senior researcher in the Communication Systems Lab at Technische Universität Berlin, Germany and received his Dr.-Ing. degree (Ph.D.) with highest honors in 2008.
Sebastian has been actively involved in and secured funding for several European projects including VISNET, 3DTV, EXIST, 3FLEX, AutoPost and 3DQC. He is a member of the Institute of Electrical and Electronics Engineers (IEEE), the Association for Computing Machinery (ACM) and the German Society of Television- and Cinema Technology (FKTG e.V.). In 2014, he was the General Chair and Technical Program Chair of the 3Tec – 3D Quality and Technology Summit in Beijing.
Sebastian received the German Multimedia Business Award of the Federal Ministry of Economics and Technology in 2008, and was awarded by the initiative “Germany – Land of Ideas” which is sponsored by the German government, commerce and industry in 2009, respectively. In 2012, he received the Scott Helt Memorial Award for the best paper published in the IEEE Transactions on Broadcasting in 2011.

Research Topics

My research interests are in computer vision and immersive media technologies, in particular 360-video (“cinematic VR”), virtual-/mixed-/augmented reality, 3D image processing and reconstruction, 2D-to-3D conversion, depth-image-based rendering, visual attention/ saliency estimation, light field imaging and visual effects.

Please find some related posts to my research interests here:

A spatio-angular filter for high quality sparse light field refocusing

Abstract The ability to render synthetic depth-of-field effects post capture is a flagship application of light field imaging. However, it ...

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Light Field Saliency Estimation

Light fields have become a major research topic in recent years. Even though there are now efforts in different applications ...

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Light Field Style Transfer With Local Angular Consistency

Abstract Style transfer involves combining the style of one image with the content of another to form a new image ...

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Self-supervised light field view synthesis using cycle consistency

Abstract High angular resolution is advantageous for practical applications of light fields. In order to enhance the angular resolution of ...

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A Spatio-Angular Binary Descriptor for Fast Light Field Inter View Matching

Abstract Light fields are able to capture light rays from a scene arriving at different angles, effectively creating multiple perspective ...

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A Study of Efficient Light Field Subsampling and Reconstruction Strategies

Abstract Limited angular resolution is one of the main obstacles for practical applications of light fields. Although numerous approaches have ...

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Visual Attention for Light Fields

Light fields have become a major research topic in recent years. Even though there are now efforts in different applications ...

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The Potential of Light Fields in Media Productions

One aspect of the EU funded project SAUCE is to explore the possibilities and challenges of integrating light field capturing ...

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L2 based Colour Correction for Light Field Arrays

In recent years, there has been an increase in the popularity of Light Field (LF) imaging technology with the increase ...

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Interactive Light Field Tilt-Shift Refocus

Since their introduction more than two decades ago, light fields have gained considerable interest in graphics and vision communities, notably ...

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Publications

Patents and Utility Models

Granted

• Method for processing a video data set (US8,577,202B2/ DE10,2007,021,518)
• Method, apparatus and computer program usable in synthesizing a stereoscopic image (EP000002747427)

Pending

• Method, apparatus and computer program usable in synthesizing a stereoscopic image (CN000104813658A)
• Apparatus and method for compositing an image from a number of visual objects (PCT/EP2012/002533)
• Method, apparatus and computer program for generating a multiview image-plus-depth format (EP000002775723A1)

Books and Book Chapters

• Carlos Vazquez, Liang Zhang, Filippo Speranza, Nils Plath, and Sebastian Knorr
  2D-to-3D Video Conversion: Overview and Perspectives
  in Emerging Technologies for 3D Video: Creation, Coding, Transmission and Rendering, Frédéric Dufaux, Béatrice Pesquet-Popescu, Marco Cagnazzo (editors), Wiley, 2013
• Sebastian Knorr
  Synthese Stereoskopischer Sequenzen aus 2-Dimensionalen Videoaufnahmen
  Suedwestdeutscher Verlag für Hochschulschriften, 2008, ISBN: 978-3-8381-0234-4

Scientific Journal Papers

• Plath, S. Knorr, L. Goldmann, and T. Sikora
  Adaptive Image Warping for Hole Prevention in 3D View Synthesis
  published in IEEETransactions on Image Processing, Special Issue on 3D Video Representation, Compression and Rendering, Vol. 22, No. 9, September 2013, pp. 3420—3432
• Knorr, K. Ide, M. Kunter, and T. Sikora
  The Avoidance of Visual Discomfort and Basic Rules for Producing “Good 3D” Pictures
  published in SMPTEMotion Imaging Journal, October 2012
• Smolic, P. Kauff, S. Knorr, A. Hornung, M. Kunter, M. Müller, M. Lang
  Three-Dimensional Video Postproduction and Processing 
  published in Proceedings of the IEEE, Vol. 99, No. 4, April 2011
• Zhang, C. Vázquez, S. Knorr
  3D-TV Content Creation: Automatic 2D-to-3D Video Conversion
  IEEETransactions on Broadcasting, Special Issue on 3D-TV, vol. 57, no. 2, 28.03.2011, pp. 372—383
  Received the Scott Helt Memorial Award for the best paper published in the IEEE Transactions on Broadcasting in 2011.
• Knorr, M. Kunter, T. Sikora
  Stereoscopic 3D from 2D Video with Super-Resolution Capability
  published in Signal Processing: Image Communication, Amsterdam: Elsevier Science B.V., Vol. 23, No. 9, October 2008, pp. 665—676
• Imre, S. Knorr, B. Özkalayci, U. Topay, A. Aydin Alatana, T. Sikora
  Towards 3-D Scene Reconstruction from Broadcast Video
  published in Signal Processing: Image Communication, Vol. 22, No. 2, February 2007, pp. 108—126

Conference Papers

• Simone Croci, Sebastian Knorr, Aljosa Smolic
  Sharpness Mismatch Detection in Stereoscopic Content with 360-Degree Capability
  IEEE International Conference on Image Processing (ICIP), Athens, Greece, Oct. 7-10, 2018.
• Cagri Ozcinar, Ana De Abreu, Sebastian Knorr, Aljosa Smolic
  Estimation of optimal encoding ladders for tiled 360° VR video in adaptive streaming systems
  19th IEEE International Symposium on Multimedia, Taichung, Taiwan, Dec. 11-13, 2017.
• Simone Croci, Sebastian Knorr, Aljosa Smolic
  Saliency-Based Sharpness Mismatch Detection For Stereoscopic Omnidirectional Images
  14th European Conference on Visual Media Production, London, UK, Dec. 11-12, 2017
• Simone Croci, Sebastian Knorr, Lutz Goldmann, Aljosa Smolic
  A Framework for Quality Control in Cinematic VR Based on Voronoi Patches and Saliency
  International Conference on 3D Immersion, Brussels, Belgium, Dec. 11-12, 2017
• Sebastian Knorr, Simone Croci, Aljosa Smolic
  A Modular Scheme for Artifact Detection in Stereoscopic Omni-Directional Images
  In proceedings of the Irish Machine Vision and Image Processing Conference, Aug. 30 – Sep. 1, 2017.
• Nils Plath, Lutz Goldmann, Alexander Nitsch, Sebastian Knorr, Thomas Sikora
  Line-preserving hole-filling for 2D-to-3D conversion
  European Conference on Visual Media Production, volume 8, London, Nov. 13—14, 2014
• Sebastian Knorr, Kai Ide, Matthias Kunter, Thomas Sikora
  Basic rules for good 3D and the avoidance of visual discomfort in stereoscopic vision
  International Broadcasting Convention (IBC), Amsterdam, NL, Sept. 8—13, 2011.
• Matthias Kunter, Sebastian Knorr, Andreas Krutz, and Thomas Sikora
  Unsupervised Object Segmentation for 2D to 3D Conversion
  IS&T/SPIE’s Electronic Imaging, San Jose, California, USA, Jan. 18—22, 2009.
• Andreas Krutz, Sebastian Knorr, Matthias Kunter, Thomas Sikora
  Camera Motion-Constraint Video Codec Selection
  IS&T/SPIE’s Electronic Imaging, San Jose, California, USA, Jan. 18—22, 2009.
• Sebastian Knorr, and Thomas Sikora
  An Image-based Rendering (IBR) Approach for Realistic Stereo View Synthesis of TV Broadcast Based on Structure From Motion
  IEEE Int. Conf. on Image Processing (ICIP), San Antonio, Texas, USA, Sept. 16—19, 2007.
• Sebastian Knorr, Matthias Kunter, and Thomas Sikora
  Super-Resolution Stereo- and Multi-View Synthesis from Monocular Video Sequences
  3-D Digital Imaging and Modeling (3DIM 2007), Montréal, Québec, Canada, August 21—23, 2007.
• Sebastian Knorr, Aljoscha Smolic, and Thomas Sikora
  From 2D- to Stereo- to Multi-view Video
  3DTV-Conference, Kos Island, Greece, May 7—9, 2007.
• Evren Imre, Sebastian Knorr, Aydin A. Alatan, and Thomas Sikora
  Prioritized Sequential 3D Reconstruction in Video Sequences of Dynamic Scenes
  IEEE Int. Conf. on Image Processing (ICIP’06), Atlanta, USA, October 8—11, 2006.
• Sebastian Knorr, Evren Imre, Aydin A. Alatan, and Thomas Sikora
  A Geometric Segmentation Approach for the 3D Reconstruction of Dynamic Scenes in 2D Video Sequences
  14th European Signal Processing Conference (EUSIPCO 2006), Florence, Italy, September 4—8, 2006.
• Sebastian Knorr, Evren Imre, Burak Özkalayci, A. Aydin Alatan, and Thomas Sikora
  A Modular Scheme for 2D/3D Conversion of TV Broadcast
  3rd International Symposium on 3D Data Processing, Visualization, and Transmission (3DPVT’06), Chapel Hill, USA, June 14—16, 2006.
• Evren Imre, Sebastian Knorr, Aydin A. Alatan, and Thomas Sikora
  Dinamik Sahneler için Önceliklendirilmis 3B Geriçatim
  SIU 2006, Antalya, Turkey, April 17-19, 2006.
• Engin Tola, Sebastian Knorr, Evren Imre, Aydin A. Alatan, and Thomas Sikora
  Structure from Motion in Dynamic Scenes with Multiple Motions
  2nd Workshop On Immersive Communication And Broadcast Systems (ICOB ‚05), Berlin, Germany, October 27-28, 2005.
• Sebastian Knorr, Carsten Clemens, Matthias Kunter, and Thomas Sikora
  Robust Concealment for Erroneous Block Bursts in Stereoscopic Images
  2nd International Symposium on 3D Data Processing, Visualization, and Transmission (3DPVT‘04), Thessaloniki, Greece, September 6-9, 2004.
• Matthias Kunter, Sebastian Knorr, Carsten Clemens, and Thomas Sikora,
  A Gradient Based Approach for Stereoscopic Error Concealment
  IEEE Int. Conf. on Image Processing (ICIP‘04), Singapore, Oct. 24-27, 2004.
• Carsten Clemens, Matthias Kunter, Sebastian Knorr and Thomas Sikora
  A Hybrid Approach for Error Concealment in Stereoscopic Images
  35th International Workshop on Image Analysis for Multimedia Interactive Services, Lisbon, Potugal, April 21-23, 2004.